1 // SPDX-License-Identifier: GPL-2.0-only
3 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
4 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
5 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
6 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
7 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
9 * Derived from the lm83 driver by Jean Delvare
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/slab.h>
15 #include <linux/i2c.h>
16 #include <linux/hwmon.h>
17 #include <linux/hwmon-sysfs.h>
18 #include <linux/hwmon-vid.h>
19 #include <linux/err.h>
20 #include <linux/jiffies.h>
22 #include <linux/util_macros.h>
24 /* Indexes for the sysfs hooks */
36 * These are unique identifiers for the sysfs functions - unlike the
37 * numbers above, these are not also indexes into an array
43 /* 7475 Common Registers */
45 #define REG_DEVREV2 0x12 /* ADT7490 only */
46 #define REG_IMON 0x1D /* ADT7490 only */
48 #define REG_VTT 0x1E /* ADT7490 only */
49 #define REG_EXTEND3 0x1F /* ADT7490 only */
51 #define REG_VOLTAGE_BASE 0x20
52 #define REG_TEMP_BASE 0x25
53 #define REG_TACH_BASE 0x28
54 #define REG_PWM_BASE 0x30
55 #define REG_PWM_MAX_BASE 0x38
57 #define REG_DEVID 0x3D
58 #define REG_VENDID 0x3E
59 #define REG_DEVID2 0x3F
61 #define REG_CONFIG1 0x40
63 #define REG_STATUS1 0x41
64 #define REG_STATUS2 0x42
66 #define REG_VID 0x43 /* ADT7476 only */
68 #define REG_VOLTAGE_MIN_BASE 0x44
69 #define REG_VOLTAGE_MAX_BASE 0x45
71 #define REG_TEMP_MIN_BASE 0x4E
72 #define REG_TEMP_MAX_BASE 0x4F
74 #define REG_TACH_MIN_BASE 0x54
76 #define REG_PWM_CONFIG_BASE 0x5C
78 #define REG_TEMP_TRANGE_BASE 0x5F
80 #define REG_ENHANCE_ACOUSTICS1 0x62
81 #define REG_ENHANCE_ACOUSTICS2 0x63
83 #define REG_PWM_MIN_BASE 0x64
85 #define REG_TEMP_TMIN_BASE 0x67
86 #define REG_TEMP_THERM_BASE 0x6A
88 #define REG_REMOTE1_HYSTERSIS 0x6D
89 #define REG_REMOTE2_HYSTERSIS 0x6E
91 #define REG_TEMP_OFFSET_BASE 0x70
93 #define REG_CONFIG2 0x73
95 #define REG_EXTEND1 0x76
96 #define REG_EXTEND2 0x77
98 #define REG_CONFIG3 0x78
99 #define REG_CONFIG5 0x7C
100 #define REG_CONFIG4 0x7D
102 #define REG_STATUS4 0x81 /* ADT7490 only */
104 #define REG_VTT_MIN 0x84 /* ADT7490 only */
105 #define REG_VTT_MAX 0x86 /* ADT7490 only */
107 #define REG_IMON_MIN 0x85 /* ADT7490 only */
108 #define REG_IMON_MAX 0x87 /* ADT7490 only */
110 #define VID_VIDSEL 0x80 /* ADT7476 only */
112 #define CONFIG2_ATTN 0x20
114 #define CONFIG3_SMBALERT 0x01
115 #define CONFIG3_THERM 0x02
117 #define CONFIG4_PINFUNC 0x03
118 #define CONFIG4_THERM 0x01
119 #define CONFIG4_SMBALERT 0x02
120 #define CONFIG4_MAXDUTY 0x08
121 #define CONFIG4_ATTN_IN10 0x30
122 #define CONFIG4_ATTN_IN43 0xC0
124 #define CONFIG5_TWOSCOMP 0x01
125 #define CONFIG5_TEMPOFFSET 0x02
126 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
128 /* ADT7475 Settings */
130 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt or Imon */
131 #define ADT7475_TEMP_COUNT 3
132 #define ADT7475_TACH_COUNT 4
133 #define ADT7475_PWM_COUNT 3
135 /* Macro to read the registers */
137 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
139 /* Macros to easily index the registers */
141 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
142 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
144 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
145 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
146 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
147 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
149 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
150 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
151 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
153 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
154 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
155 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
156 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
157 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
158 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
159 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
161 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
163 enum chips { adt7473, adt7475, adt7476, adt7490 };
165 static const struct i2c_device_id adt7475_id[] = {
166 { "adt7473", adt7473 },
167 { "adt7475", adt7475 },
168 { "adt7476", adt7476 },
169 { "adt7490", adt7490 },
172 MODULE_DEVICE_TABLE(i2c, adt7475_id);
174 static const struct of_device_id __maybe_unused adt7475_of_match[] = {
176 .compatible = "adi,adt7473",
177 .data = (void *)adt7473
180 .compatible = "adi,adt7475",
181 .data = (void *)adt7475
184 .compatible = "adi,adt7476",
185 .data = (void *)adt7476
188 .compatible = "adi,adt7490",
189 .data = (void *)adt7490
193 MODULE_DEVICE_TABLE(of, adt7475_of_match);
195 struct adt7475_data {
196 struct i2c_client *client;
199 unsigned long measure_updated;
206 u8 bypass_attn; /* Bypass voltage attenuator */
222 const struct attribute_group *groups[10];
225 static struct i2c_driver adt7475_driver;
226 static struct adt7475_data *adt7475_update_device(struct device *dev);
227 static void adt7475_read_hystersis(struct i2c_client *client);
228 static void adt7475_read_pwm(struct i2c_client *client, int index);
230 /* Given a temp value, convert it to register value */
232 static inline u16 temp2reg(struct adt7475_data *data, long val)
236 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
237 val = clamp_val(val, -64000, 191000);
238 ret = (val + 64500) / 1000;
240 val = clamp_val(val, -128000, 127000);
242 ret = (256500 + val) / 1000;
244 ret = (val + 500) / 1000;
250 /* Given a register value, convert it to a real temp value */
252 static inline int reg2temp(struct adt7475_data *data, u16 reg)
254 if (data->config5 & CONFIG5_TWOSCOMP) {
256 return (reg - 1024) * 250;
260 return (reg - 256) * 250;
263 static inline int tach2rpm(u16 tach)
265 if (tach == 0 || tach == 0xFFFF)
268 return (90000 * 60) / tach;
271 static inline u16 rpm2tach(unsigned long rpm)
276 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
279 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
280 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 2][2] = {
281 { 45, 94 }, /* +2.5V */
282 { 175, 525 }, /* Vccp */
283 { 68, 71 }, /* Vcc */
284 { 93, 47 }, /* +5V */
285 { 120, 20 }, /* +12V */
286 { 45, 45 }, /* Vtt */
287 { 45, 45 }, /* Imon */
290 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
292 const int *r = adt7473_in_scaling[channel];
294 if (bypass_attn & (1 << channel))
295 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
296 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
299 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
301 const int *r = adt7473_in_scaling[channel];
304 if (bypass_attn & (1 << channel))
305 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
307 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
308 (r[0] + r[1]) * 2250);
309 return clamp_val(reg, 0, 1023) & (0xff << 2);
312 static int adt7475_read_word(struct i2c_client *client, int reg)
316 val1 = i2c_smbus_read_byte_data(client, reg);
319 val2 = i2c_smbus_read_byte_data(client, reg + 1);
323 return val1 | (val2 << 8);
326 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
328 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
329 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
332 static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
335 struct adt7475_data *data = adt7475_update_device(dev);
336 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
340 return PTR_ERR(data);
344 return sprintf(buf, "%d\n",
345 (data->alarms >> sattr->index) & 1);
347 val = data->voltage[sattr->nr][sattr->index];
348 return sprintf(buf, "%d\n",
349 reg2volt(sattr->index, val, data->bypass_attn));
353 static ssize_t voltage_store(struct device *dev,
354 struct device_attribute *attr, const char *buf,
358 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
359 struct adt7475_data *data = dev_get_drvdata(dev);
360 struct i2c_client *client = data->client;
364 if (kstrtol(buf, 10, &val))
367 mutex_lock(&data->lock);
369 data->voltage[sattr->nr][sattr->index] =
370 volt2reg(sattr->index, val, data->bypass_attn);
372 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
373 if (sattr->nr == MIN)
374 reg = VOLTAGE_MIN_REG(sattr->index);
376 reg = VOLTAGE_MAX_REG(sattr->index);
377 } else if (sattr->index == 5) {
378 if (sattr->nr == MIN)
383 if (sattr->nr == MIN)
389 i2c_smbus_write_byte_data(client, reg,
390 data->voltage[sattr->nr][sattr->index] >> 2);
391 mutex_unlock(&data->lock);
396 static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
399 struct adt7475_data *data = adt7475_update_device(dev);
400 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
404 return PTR_ERR(data);
408 mutex_lock(&data->lock);
409 out = data->temp[sattr->nr][sattr->index];
410 if (sattr->index != 1)
411 out = (out >> 4) & 0xF;
415 * Show the value as an absolute number tied to
418 out = reg2temp(data, data->temp[THERM][sattr->index]) -
420 mutex_unlock(&data->lock);
425 * Offset is always 2's complement, regardless of the
428 mutex_lock(&data->lock);
429 out = (s8)data->temp[sattr->nr][sattr->index];
430 if (data->config5 & CONFIG5_TEMPOFFSET)
434 mutex_unlock(&data->lock);
438 out = (data->alarms >> (sattr->index + 4)) & 1;
442 /* Note - only for remote1 and remote2 */
443 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
447 /* All other temp values are in the configured format */
448 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
451 return sprintf(buf, "%d\n", out);
454 static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
455 const char *buf, size_t count)
457 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
458 struct adt7475_data *data = dev_get_drvdata(dev);
459 struct i2c_client *client = data->client;
460 unsigned char reg = 0;
465 if (kstrtol(buf, 10, &val))
468 mutex_lock(&data->lock);
470 /* We need the config register in all cases for temp <-> reg conv. */
471 data->config5 = adt7475_read(REG_CONFIG5);
475 if (data->config5 & CONFIG5_TEMPOFFSET) {
476 val = clamp_val(val, -63000, 127000);
477 out = data->temp[OFFSET][sattr->index] = val / 1000;
479 val = clamp_val(val, -63000, 64000);
480 out = data->temp[OFFSET][sattr->index] = val / 500;
486 * The value will be given as an absolute value, turn it
487 * into an offset based on THERM
490 /* Read fresh THERM and HYSTERSIS values from the chip */
491 data->temp[THERM][sattr->index] =
492 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
493 adt7475_read_hystersis(client);
495 temp = reg2temp(data, data->temp[THERM][sattr->index]);
496 val = clamp_val(val, temp - 15000, temp);
497 val = (temp - val) / 1000;
499 if (sattr->index != 1) {
500 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
501 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
503 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
504 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
507 out = data->temp[HYSTERSIS][sattr->index];
511 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
514 * We maintain an extra 2 digits of precision for simplicity
515 * - shift those back off before writing the value
517 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
522 reg = TEMP_MIN_REG(sattr->index);
525 reg = TEMP_MAX_REG(sattr->index);
528 reg = TEMP_OFFSET_REG(sattr->index);
531 reg = TEMP_TMIN_REG(sattr->index);
534 reg = TEMP_THERM_REG(sattr->index);
537 if (sattr->index != 2)
538 reg = REG_REMOTE1_HYSTERSIS;
540 reg = REG_REMOTE2_HYSTERSIS;
545 i2c_smbus_write_byte_data(client, reg, out);
547 mutex_unlock(&data->lock);
551 /* Assuming CONFIG6[SLOW] is 0 */
552 static const int ad7475_st_map[] = {
553 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
556 static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
559 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
560 struct adt7475_data *data = dev_get_drvdata(dev);
563 switch (sattr->index) {
565 val = data->enh_acoustics[0] & 0xf;
568 val = data->enh_acoustics[1] & 0xf;
572 val = (data->enh_acoustics[1] >> 4) & 0xf;
577 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
579 return sprintf(buf, "0\n");
582 static ssize_t temp_st_store(struct device *dev,
583 struct device_attribute *attr, const char *buf,
586 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
587 struct adt7475_data *data = dev_get_drvdata(dev);
588 struct i2c_client *client = data->client;
593 if (kstrtoul(buf, 10, &val))
596 switch (sattr->index) {
598 reg = REG_ENHANCE_ACOUSTICS1;
603 reg = REG_ENHANCE_ACOUSTICS2;
609 reg = REG_ENHANCE_ACOUSTICS2;
616 val = find_closest_descending(val, ad7475_st_map,
617 ARRAY_SIZE(ad7475_st_map));
621 mutex_lock(&data->lock);
623 data->enh_acoustics[idx] &= ~(0xf << shift);
624 data->enh_acoustics[idx] |= (val << shift);
626 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
628 mutex_unlock(&data->lock);
634 * Table of autorange values - the user will write the value in millidegrees,
635 * and we'll convert it
637 static const int autorange_table[] = {
638 2000, 2500, 3330, 4000, 5000, 6670, 8000,
639 10000, 13330, 16000, 20000, 26670, 32000, 40000,
643 static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
646 struct adt7475_data *data = adt7475_update_device(dev);
647 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
651 return PTR_ERR(data);
653 mutex_lock(&data->lock);
654 out = (data->range[sattr->index] >> 4) & 0x0F;
655 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
656 mutex_unlock(&data->lock);
658 return sprintf(buf, "%d\n", val + autorange_table[out]);
661 static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
662 const char *buf, size_t count)
664 struct adt7475_data *data = dev_get_drvdata(dev);
665 struct i2c_client *client = data->client;
666 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
670 if (kstrtol(buf, 10, &val))
673 mutex_lock(&data->lock);
675 /* Get a fresh copy of the needed registers */
676 data->config5 = adt7475_read(REG_CONFIG5);
677 data->temp[AUTOMIN][sattr->index] =
678 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
679 data->range[sattr->index] =
680 adt7475_read(TEMP_TRANGE_REG(sattr->index));
683 * The user will write an absolute value, so subtract the start point
684 * to figure the range
686 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
687 val = clamp_val(val, temp + autorange_table[0],
688 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
691 /* Find the nearest table entry to what the user wrote */
692 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
694 data->range[sattr->index] &= ~0xF0;
695 data->range[sattr->index] |= val << 4;
697 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
698 data->range[sattr->index]);
700 mutex_unlock(&data->lock);
704 static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
707 struct adt7475_data *data = adt7475_update_device(dev);
708 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
712 return PTR_ERR(data);
714 if (sattr->nr == ALARM)
715 out = (data->alarms >> (sattr->index + 10)) & 1;
717 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
719 return sprintf(buf, "%d\n", out);
722 static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
723 const char *buf, size_t count)
726 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
727 struct adt7475_data *data = dev_get_drvdata(dev);
728 struct i2c_client *client = data->client;
731 if (kstrtoul(buf, 10, &val))
734 mutex_lock(&data->lock);
736 data->tach[MIN][sattr->index] = rpm2tach(val);
738 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
739 data->tach[MIN][sattr->index]);
741 mutex_unlock(&data->lock);
745 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
748 struct adt7475_data *data = adt7475_update_device(dev);
749 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
752 return PTR_ERR(data);
754 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
757 static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
760 struct adt7475_data *data = adt7475_update_device(dev);
761 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
764 return PTR_ERR(data);
766 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
769 static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
772 struct adt7475_data *data = adt7475_update_device(dev);
773 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
776 return PTR_ERR(data);
778 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
781 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
782 const char *buf, size_t count)
785 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
786 struct adt7475_data *data = dev_get_drvdata(dev);
787 struct i2c_client *client = data->client;
788 unsigned char reg = 0;
791 if (kstrtol(buf, 10, &val))
794 mutex_lock(&data->lock);
798 /* Get a fresh value for CONTROL */
799 data->pwm[CONTROL][sattr->index] =
800 adt7475_read(PWM_CONFIG_REG(sattr->index));
803 * If we are not in manual mode, then we shouldn't allow
804 * the user to set the pwm speed
806 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
807 mutex_unlock(&data->lock);
811 reg = PWM_REG(sattr->index);
815 reg = PWM_MIN_REG(sattr->index);
819 reg = PWM_MAX_REG(sattr->index);
823 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
824 i2c_smbus_write_byte_data(client, reg,
825 data->pwm[sattr->nr][sattr->index]);
826 mutex_unlock(&data->lock);
831 static ssize_t stall_disable_show(struct device *dev,
832 struct device_attribute *attr, char *buf)
834 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
835 struct adt7475_data *data = dev_get_drvdata(dev);
837 u8 mask = BIT(5 + sattr->index);
839 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
842 static ssize_t stall_disable_store(struct device *dev,
843 struct device_attribute *attr,
844 const char *buf, size_t count)
846 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
847 struct adt7475_data *data = dev_get_drvdata(dev);
848 struct i2c_client *client = data->client;
850 u8 mask = BIT(5 + sattr->index);
852 if (kstrtol(buf, 10, &val))
855 mutex_lock(&data->lock);
857 data->enh_acoustics[0] &= ~mask;
859 data->enh_acoustics[0] |= mask;
861 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
862 data->enh_acoustics[0]);
864 mutex_unlock(&data->lock);
869 /* Called by set_pwmctrl and set_pwmchan */
871 static int hw_set_pwm(struct i2c_client *client, int index,
872 unsigned int pwmctl, unsigned int pwmchan)
874 struct adt7475_data *data = i2c_get_clientdata(client);
879 val = 0x03; /* Run at full speed */
882 val = 0x07; /* Manual mode */
887 /* Remote1 controls PWM */
891 /* local controls PWM */
895 /* remote2 controls PWM */
899 /* local/remote2 control PWM */
903 /* All three control PWM */
914 data->pwmctl[index] = pwmctl;
915 data->pwmchan[index] = pwmchan;
917 data->pwm[CONTROL][index] &= ~0xE0;
918 data->pwm[CONTROL][index] |= (val & 7) << 5;
920 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
921 data->pwm[CONTROL][index]);
926 static ssize_t pwmchan_store(struct device *dev,
927 struct device_attribute *attr, const char *buf,
930 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
931 struct adt7475_data *data = dev_get_drvdata(dev);
932 struct i2c_client *client = data->client;
936 if (kstrtol(buf, 10, &val))
939 mutex_lock(&data->lock);
940 /* Read Modify Write PWM values */
941 adt7475_read_pwm(client, sattr->index);
942 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
945 mutex_unlock(&data->lock);
950 static ssize_t pwmctrl_store(struct device *dev,
951 struct device_attribute *attr, const char *buf,
954 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
955 struct adt7475_data *data = dev_get_drvdata(dev);
956 struct i2c_client *client = data->client;
960 if (kstrtol(buf, 10, &val))
963 mutex_lock(&data->lock);
964 /* Read Modify Write PWM values */
965 adt7475_read_pwm(client, sattr->index);
966 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
969 mutex_unlock(&data->lock);
974 /* List of frequencies for the PWM */
975 static const int pwmfreq_table[] = {
976 11, 14, 22, 29, 35, 44, 58, 88, 22500
979 static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
982 struct adt7475_data *data = adt7475_update_device(dev);
983 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
987 return PTR_ERR(data);
988 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
989 ARRAY_SIZE(pwmfreq_table) - 1);
991 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
994 static ssize_t pwmfreq_store(struct device *dev,
995 struct device_attribute *attr, const char *buf,
998 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
999 struct adt7475_data *data = dev_get_drvdata(dev);
1000 struct i2c_client *client = data->client;
1004 if (kstrtol(buf, 10, &val))
1007 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
1009 mutex_lock(&data->lock);
1011 data->range[sattr->index] =
1012 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1013 data->range[sattr->index] &= ~0xf;
1014 data->range[sattr->index] |= out;
1016 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1017 data->range[sattr->index]);
1019 mutex_unlock(&data->lock);
1023 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1024 struct device_attribute *devattr,
1027 struct adt7475_data *data = adt7475_update_device(dev);
1030 return PTR_ERR(data);
1032 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1035 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1036 struct device_attribute *devattr,
1037 const char *buf, size_t count)
1039 struct adt7475_data *data = dev_get_drvdata(dev);
1040 struct i2c_client *client = data->client;
1043 if (kstrtol(buf, 10, &val))
1045 if (val != 0 && val != 1)
1048 mutex_lock(&data->lock);
1049 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1051 data->config4 |= CONFIG4_MAXDUTY;
1053 data->config4 &= ~CONFIG4_MAXDUTY;
1054 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1055 mutex_unlock(&data->lock);
1060 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1063 struct adt7475_data *data = dev_get_drvdata(dev);
1064 return sprintf(buf, "%d\n", (int)data->vrm);
1067 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1068 const char *buf, size_t count)
1070 struct adt7475_data *data = dev_get_drvdata(dev);
1073 if (kstrtol(buf, 10, &val))
1075 if (val < 0 || val > 255)
1082 static ssize_t cpu0_vid_show(struct device *dev,
1083 struct device_attribute *devattr, char *buf)
1085 struct adt7475_data *data = adt7475_update_device(dev);
1088 return PTR_ERR(data);
1090 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1093 static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1094 static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1095 static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1096 static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1097 static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1098 static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1099 static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1100 static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1101 static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1102 static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1103 static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1104 static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1105 static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1106 static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1107 static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1108 static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1109 static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1110 static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1111 static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1112 static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1113 static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1114 static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1115 static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1116 static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1117 static SENSOR_DEVICE_ATTR_2_RO(in6_input, voltage, INPUT, 6);
1118 static SENSOR_DEVICE_ATTR_2_RW(in6_max, voltage, MAX, 6);
1119 static SENSOR_DEVICE_ATTR_2_RW(in6_min, voltage, MIN, 6);
1120 static SENSOR_DEVICE_ATTR_2_RO(in6_alarm, voltage, ALARM, 30);
1121 static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1122 static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1123 static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1124 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1125 static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1126 static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1127 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1128 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1129 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1130 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1131 static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1132 static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1133 static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1134 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1135 static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1136 static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1137 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1138 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1139 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1140 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1141 static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1142 static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1143 static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1144 static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1145 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1146 static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1147 static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1148 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1149 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1150 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1151 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1152 static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1153 static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1154 static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1155 static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1156 static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1157 static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1158 static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1159 static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1160 static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1161 static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1162 static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1163 static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1164 static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1165 static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1166 static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1167 static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1168 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1169 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1170 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1171 static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1172 static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1173 static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1174 static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1175 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1176 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1177 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1178 static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1179 static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1180 static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1181 static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1182 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1183 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1184 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1185 static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1187 /* Non-standard name, might need revisiting */
1188 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1190 static DEVICE_ATTR_RW(vrm);
1191 static DEVICE_ATTR_RO(cpu0_vid);
1193 static struct attribute *adt7475_attrs[] = {
1194 &sensor_dev_attr_in1_input.dev_attr.attr,
1195 &sensor_dev_attr_in1_max.dev_attr.attr,
1196 &sensor_dev_attr_in1_min.dev_attr.attr,
1197 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1198 &sensor_dev_attr_in2_input.dev_attr.attr,
1199 &sensor_dev_attr_in2_max.dev_attr.attr,
1200 &sensor_dev_attr_in2_min.dev_attr.attr,
1201 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1202 &sensor_dev_attr_temp1_input.dev_attr.attr,
1203 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1204 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1205 &sensor_dev_attr_temp1_max.dev_attr.attr,
1206 &sensor_dev_attr_temp1_min.dev_attr.attr,
1207 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1208 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1209 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1210 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1211 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1212 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1213 &sensor_dev_attr_temp2_input.dev_attr.attr,
1214 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1215 &sensor_dev_attr_temp2_max.dev_attr.attr,
1216 &sensor_dev_attr_temp2_min.dev_attr.attr,
1217 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1218 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1219 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1220 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1221 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1222 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1223 &sensor_dev_attr_temp3_input.dev_attr.attr,
1224 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1225 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1226 &sensor_dev_attr_temp3_max.dev_attr.attr,
1227 &sensor_dev_attr_temp3_min.dev_attr.attr,
1228 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1229 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1230 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1231 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1232 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1233 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1234 &sensor_dev_attr_fan1_input.dev_attr.attr,
1235 &sensor_dev_attr_fan1_min.dev_attr.attr,
1236 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1237 &sensor_dev_attr_fan2_input.dev_attr.attr,
1238 &sensor_dev_attr_fan2_min.dev_attr.attr,
1239 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1240 &sensor_dev_attr_fan3_input.dev_attr.attr,
1241 &sensor_dev_attr_fan3_min.dev_attr.attr,
1242 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1243 &sensor_dev_attr_pwm1.dev_attr.attr,
1244 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1245 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1246 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1247 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1248 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1249 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1250 &sensor_dev_attr_pwm3.dev_attr.attr,
1251 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1252 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1253 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1254 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1255 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1256 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1257 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1261 static struct attribute *fan4_attrs[] = {
1262 &sensor_dev_attr_fan4_input.dev_attr.attr,
1263 &sensor_dev_attr_fan4_min.dev_attr.attr,
1264 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1268 static struct attribute *pwm2_attrs[] = {
1269 &sensor_dev_attr_pwm2.dev_attr.attr,
1270 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1271 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1272 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1273 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1274 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1275 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1279 static struct attribute *in0_attrs[] = {
1280 &sensor_dev_attr_in0_input.dev_attr.attr,
1281 &sensor_dev_attr_in0_max.dev_attr.attr,
1282 &sensor_dev_attr_in0_min.dev_attr.attr,
1283 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1287 static struct attribute *in3_attrs[] = {
1288 &sensor_dev_attr_in3_input.dev_attr.attr,
1289 &sensor_dev_attr_in3_max.dev_attr.attr,
1290 &sensor_dev_attr_in3_min.dev_attr.attr,
1291 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1295 static struct attribute *in4_attrs[] = {
1296 &sensor_dev_attr_in4_input.dev_attr.attr,
1297 &sensor_dev_attr_in4_max.dev_attr.attr,
1298 &sensor_dev_attr_in4_min.dev_attr.attr,
1299 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1303 static struct attribute *in5_attrs[] = {
1304 &sensor_dev_attr_in5_input.dev_attr.attr,
1305 &sensor_dev_attr_in5_max.dev_attr.attr,
1306 &sensor_dev_attr_in5_min.dev_attr.attr,
1307 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1311 static struct attribute *in6_attrs[] = {
1312 &sensor_dev_attr_in6_input.dev_attr.attr,
1313 &sensor_dev_attr_in6_max.dev_attr.attr,
1314 &sensor_dev_attr_in6_min.dev_attr.attr,
1315 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1319 static struct attribute *vid_attrs[] = {
1320 &dev_attr_cpu0_vid.attr,
1325 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1326 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1327 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1328 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1329 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1330 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1331 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1332 static const struct attribute_group in6_attr_group = { .attrs = in6_attrs };
1333 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1335 static int adt7475_detect(struct i2c_client *client,
1336 struct i2c_board_info *info)
1338 struct i2c_adapter *adapter = client->adapter;
1339 int vendid, devid, devid2;
1342 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1345 vendid = adt7475_read(REG_VENDID);
1346 devid2 = adt7475_read(REG_DEVID2);
1347 if (vendid != 0x41 || /* Analog Devices */
1348 (devid2 & 0xf8) != 0x68)
1351 devid = adt7475_read(REG_DEVID);
1354 else if (devid == 0x75 && client->addr == 0x2e)
1356 else if (devid == 0x76)
1358 else if ((devid2 & 0xfc) == 0x6c)
1361 dev_dbg(&adapter->dev,
1362 "Couldn't detect an ADT7473/75/76/90 part at "
1363 "0x%02x\n", (unsigned int)client->addr);
1367 strscpy(info->type, name, I2C_NAME_SIZE);
1372 static int adt7475_update_limits(struct i2c_client *client)
1374 struct adt7475_data *data = i2c_get_clientdata(client);
1378 ret = adt7475_read(REG_CONFIG4);
1381 data->config4 = ret;
1383 ret = adt7475_read(REG_CONFIG5);
1386 data->config5 = ret;
1388 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1389 if (!(data->has_voltage & (1 << i)))
1391 /* Adjust values so they match the input precision */
1392 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1395 data->voltage[MIN][i] = ret << 2;
1397 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1400 data->voltage[MAX][i] = ret << 2;
1403 if (data->has_voltage & (1 << 5)) {
1404 ret = adt7475_read(REG_VTT_MIN);
1407 data->voltage[MIN][5] = ret << 2;
1409 ret = adt7475_read(REG_VTT_MAX);
1412 data->voltage[MAX][5] = ret << 2;
1415 if (data->has_voltage & (1 << 6)) {
1416 ret = adt7475_read(REG_IMON_MIN);
1419 data->voltage[MIN][6] = ret << 2;
1421 ret = adt7475_read(REG_IMON_MAX);
1424 data->voltage[MAX][6] = ret << 2;
1427 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1428 /* Adjust values so they match the input precision */
1429 ret = adt7475_read(TEMP_MIN_REG(i));
1432 data->temp[MIN][i] = ret << 2;
1434 ret = adt7475_read(TEMP_MAX_REG(i));
1437 data->temp[MAX][i] = ret << 2;
1439 ret = adt7475_read(TEMP_TMIN_REG(i));
1442 data->temp[AUTOMIN][i] = ret << 2;
1444 ret = adt7475_read(TEMP_THERM_REG(i));
1447 data->temp[THERM][i] = ret << 2;
1449 ret = adt7475_read(TEMP_OFFSET_REG(i));
1452 data->temp[OFFSET][i] = ret;
1454 adt7475_read_hystersis(client);
1456 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1457 if (i == 3 && !data->has_fan4)
1459 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1462 data->tach[MIN][i] = ret;
1465 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1466 if (i == 1 && !data->has_pwm2)
1468 ret = adt7475_read(PWM_MAX_REG(i));
1471 data->pwm[MAX][i] = ret;
1473 ret = adt7475_read(PWM_MIN_REG(i));
1476 data->pwm[MIN][i] = ret;
1477 /* Set the channel and control information */
1478 adt7475_read_pwm(client, i);
1481 ret = adt7475_read(TEMP_TRANGE_REG(0));
1484 data->range[0] = ret;
1486 ret = adt7475_read(TEMP_TRANGE_REG(1));
1489 data->range[1] = ret;
1491 ret = adt7475_read(TEMP_TRANGE_REG(2));
1494 data->range[2] = ret;
1499 static int load_config3(const struct i2c_client *client, const char *propname)
1501 const char *function;
1505 ret = device_property_read_string(&client->dev, propname, &function);
1507 ret = adt7475_read(REG_CONFIG3);
1511 config3 = ret & ~CONFIG3_SMBALERT;
1512 if (!strcmp("pwm2", function))
1514 else if (!strcmp("smbalert#", function))
1515 config3 |= CONFIG3_SMBALERT;
1519 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
1525 static int load_config4(const struct i2c_client *client, const char *propname)
1527 const char *function;
1531 ret = device_property_read_string(&client->dev, propname, &function);
1533 ret = adt7475_read(REG_CONFIG4);
1537 config4 = ret & ~CONFIG4_PINFUNC;
1539 if (!strcmp("tach4", function))
1541 else if (!strcmp("therm#", function))
1542 config4 |= CONFIG4_THERM;
1543 else if (!strcmp("smbalert#", function))
1544 config4 |= CONFIG4_SMBALERT;
1545 else if (!strcmp("gpio", function))
1546 config4 |= CONFIG4_PINFUNC;
1550 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
1556 static int load_config(const struct i2c_client *client, enum chips chip)
1559 const char *prop1, *prop2;
1564 prop1 = "adi,pin5-function";
1565 prop2 = "adi,pin9-function";
1569 prop1 = "adi,pin10-function";
1570 prop2 = "adi,pin14-function";
1574 err = load_config3(client, prop1);
1576 dev_err(&client->dev, "failed to configure %s\n", prop1);
1580 err = load_config4(client, prop2);
1582 dev_err(&client->dev, "failed to configure %s\n", prop2);
1589 static int set_property_bit(const struct i2c_client *client, char *property,
1590 u8 *config, u8 bit_index)
1593 int ret = device_property_read_u32(&client->dev, property,
1598 *config |= (1 << bit_index);
1600 *config &= ~(1 << bit_index);
1606 static int load_attenuators(const struct i2c_client *client, enum chips chip,
1607 struct adt7475_data *data)
1612 set_property_bit(client, "adi,bypass-attenuator-in0",
1614 set_property_bit(client, "adi,bypass-attenuator-in1",
1616 set_property_bit(client, "adi,bypass-attenuator-in3",
1618 set_property_bit(client, "adi,bypass-attenuator-in4",
1621 return i2c_smbus_write_byte_data(client, REG_CONFIG4,
1625 set_property_bit(client, "adi,bypass-attenuator-in1",
1628 return i2c_smbus_write_byte_data(client, REG_CONFIG2,
1635 static int adt7475_set_pwm_polarity(struct i2c_client *client)
1637 u32 states[ADT7475_PWM_COUNT];
1641 ret = device_property_read_u32_array(&client->dev,
1642 "adi,pwm-active-state", states,
1643 ARRAY_SIZE(states));
1647 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1648 ret = adt7475_read(PWM_CONFIG_REG(i));
1657 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1665 static int adt7475_probe(struct i2c_client *client)
1668 static const char * const names[] = {
1669 [adt7473] = "ADT7473",
1670 [adt7475] = "ADT7475",
1671 [adt7476] = "ADT7476",
1672 [adt7490] = "ADT7490",
1675 struct adt7475_data *data;
1676 struct device *hwmon_dev;
1677 int i, ret = 0, revision, group_num = 0;
1679 const struct i2c_device_id *id = i2c_match_id(adt7475_id, client);
1681 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1685 mutex_init(&data->lock);
1686 data->client = client;
1687 i2c_set_clientdata(client, data);
1689 if (client->dev.of_node)
1690 chip = (uintptr_t)of_device_get_match_data(&client->dev);
1692 chip = id->driver_data;
1694 /* Initialize device-specific values */
1697 data->has_voltage = 0x0e; /* in1 to in3 */
1698 revision = adt7475_read(REG_DEVID2) & 0x07;
1701 data->has_voltage = 0x7e; /* in1 to in6 */
1702 revision = adt7475_read(REG_DEVID2) & 0x03;
1703 if (revision == 0x03)
1704 revision += adt7475_read(REG_DEVREV2);
1707 data->has_voltage = 0x06; /* in1, in2 */
1708 revision = adt7475_read(REG_DEVID2) & 0x07;
1711 ret = load_config(client, chip);
1715 config3 = adt7475_read(REG_CONFIG3);
1716 /* Pin PWM2 may alternatively be used for ALERT output */
1717 if (!(config3 & CONFIG3_SMBALERT))
1719 /* Meaning of this bit is inverted for the ADT7473-1 */
1720 if (id->driver_data == adt7473 && revision >= 1)
1721 data->has_pwm2 = !data->has_pwm2;
1723 data->config4 = adt7475_read(REG_CONFIG4);
1724 /* Pin TACH4 may alternatively be used for THERM */
1725 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1729 * THERM configuration is more complex on the ADT7476 and ADT7490,
1730 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1733 if (id->driver_data == adt7490) {
1734 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1735 !(config3 & CONFIG3_THERM))
1738 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1739 if (!(config3 & CONFIG3_THERM) ||
1740 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1741 data->has_voltage |= (1 << 0); /* in0 */
1745 * On the ADT7476, the +12V input pin may instead be used as VID5,
1746 * and VID pins may alternatively be used as GPIO
1748 if (id->driver_data == adt7476) {
1749 u8 vid = adt7475_read(REG_VID);
1750 if (!(vid & VID_VIDSEL))
1751 data->has_voltage |= (1 << 4); /* in4 */
1753 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1756 /* Voltage attenuators can be bypassed, globally or individually */
1757 data->config2 = adt7475_read(REG_CONFIG2);
1758 ret = load_attenuators(client, chip, data);
1760 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1762 if (data->config2 & CONFIG2_ATTN) {
1763 data->bypass_attn = (0x3 << 3) | 0x3;
1765 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1766 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1768 data->bypass_attn &= data->has_voltage;
1771 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1772 * pwm's which are disabled to manual mode with 0% duty cycle
1774 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1775 adt7475_read_pwm(client, i);
1777 ret = adt7475_set_pwm_polarity(client);
1778 if (ret && ret != -EINVAL)
1779 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1781 /* Start monitoring */
1785 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1786 adt7475_read(REG_CONFIG1) | 0x01);
1792 data->groups[group_num++] = &adt7475_attr_group;
1794 /* Features that can be disabled individually */
1795 if (data->has_fan4) {
1796 data->groups[group_num++] = &fan4_attr_group;
1798 if (data->has_pwm2) {
1799 data->groups[group_num++] = &pwm2_attr_group;
1801 if (data->has_voltage & (1 << 0)) {
1802 data->groups[group_num++] = &in0_attr_group;
1804 if (data->has_voltage & (1 << 3)) {
1805 data->groups[group_num++] = &in3_attr_group;
1807 if (data->has_voltage & (1 << 4)) {
1808 data->groups[group_num++] = &in4_attr_group;
1810 if (data->has_voltage & (1 << 5)) {
1811 data->groups[group_num++] = &in5_attr_group;
1813 if (data->has_voltage & (1 << 6)) {
1814 data->groups[group_num++] = &in6_attr_group;
1816 if (data->has_vid) {
1817 data->vrm = vid_which_vrm();
1818 data->groups[group_num] = &vid_attr_group;
1821 /* register device with all the acquired attributes */
1822 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1826 if (IS_ERR(hwmon_dev)) {
1827 ret = PTR_ERR(hwmon_dev);
1831 dev_info(&client->dev, "%s device, revision %d\n",
1832 names[id->driver_data], revision);
1833 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1834 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1835 (data->has_voltage & (1 << 0)) ? " in0" : "",
1836 (data->has_voltage & (1 << 4)) ? " in4" : "",
1837 data->has_fan4 ? " fan4" : "",
1838 data->has_pwm2 ? " pwm2" : "",
1839 data->has_vid ? " vid" : "");
1840 if (data->bypass_attn)
1841 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1842 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1843 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1844 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1845 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1847 /* Limits and settings, should never change update more than once */
1848 ret = adt7475_update_limits(client);
1855 static struct i2c_driver adt7475_driver = {
1856 .class = I2C_CLASS_HWMON,
1859 .of_match_table = of_match_ptr(adt7475_of_match),
1861 .probe = adt7475_probe,
1862 .id_table = adt7475_id,
1863 .detect = adt7475_detect,
1864 .address_list = normal_i2c,
1867 static void adt7475_read_hystersis(struct i2c_client *client)
1869 struct adt7475_data *data = i2c_get_clientdata(client);
1871 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1872 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1873 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1876 static void adt7475_read_pwm(struct i2c_client *client, int index)
1878 struct adt7475_data *data = i2c_get_clientdata(client);
1881 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1884 * Figure out the internal value for pwmctrl and pwmchan
1885 * based on the current settings
1887 v = (data->pwm[CONTROL][index] >> 5) & 7;
1890 data->pwmctl[index] = 0;
1892 data->pwmctl[index] = 1;
1895 * The fan is disabled - we don't want to
1896 * support that, so change to manual mode and
1897 * set the duty cycle to 0 instead
1899 data->pwm[INPUT][index] = 0;
1900 data->pwm[CONTROL][index] &= ~0xE0;
1901 data->pwm[CONTROL][index] |= (7 << 5);
1903 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1904 data->pwm[INPUT][index]);
1906 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1907 data->pwm[CONTROL][index]);
1909 data->pwmctl[index] = 1;
1911 data->pwmctl[index] = 2;
1915 data->pwmchan[index] = 1;
1918 data->pwmchan[index] = 2;
1921 data->pwmchan[index] = 4;
1924 data->pwmchan[index] = 6;
1927 data->pwmchan[index] = 7;
1933 static int adt7475_update_measure(struct device *dev)
1935 struct adt7475_data *data = dev_get_drvdata(dev);
1936 struct i2c_client *client = data->client;
1941 ret = adt7475_read(REG_STATUS2);
1944 data->alarms = ret << 8;
1946 ret = adt7475_read(REG_STATUS1);
1949 data->alarms |= ret;
1951 ret = adt7475_read(REG_EXTEND2);
1957 ret = adt7475_read(REG_EXTEND1);
1963 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1964 if (!(data->has_voltage & (1 << i)))
1966 ret = adt7475_read(VOLTAGE_REG(i));
1969 data->voltage[INPUT][i] =
1971 ((ext >> (i * 2)) & 3);
1974 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1975 ret = adt7475_read(TEMP_REG(i));
1978 data->temp[INPUT][i] =
1980 ((ext >> ((i + 5) * 2)) & 3);
1983 if (data->has_voltage & (1 << 5)) {
1984 ret = adt7475_read(REG_STATUS4);
1987 data->alarms |= ret << 24;
1989 ret = adt7475_read(REG_EXTEND3);
1994 ret = adt7475_read(REG_VTT);
1997 data->voltage[INPUT][5] = ret << 2 |
2001 if (data->has_voltage & (1 << 6)) {
2002 ret = adt7475_read(REG_STATUS4);
2005 data->alarms |= ret << 24;
2007 ret = adt7475_read(REG_EXTEND3);
2012 ret = adt7475_read(REG_IMON);
2015 data->voltage[INPUT][6] = ret << 2 |
2019 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
2020 if (i == 3 && !data->has_fan4)
2022 ret = adt7475_read_word(client, TACH_REG(i));
2025 data->tach[INPUT][i] = ret;
2028 /* Updated by hw when in auto mode */
2029 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
2030 if (i == 1 && !data->has_pwm2)
2032 ret = adt7475_read(PWM_REG(i));
2035 data->pwm[INPUT][i] = ret;
2038 if (data->has_vid) {
2039 ret = adt7475_read(REG_VID);
2042 data->vid = ret & 0x3f;
2048 static struct adt7475_data *adt7475_update_device(struct device *dev)
2050 struct adt7475_data *data = dev_get_drvdata(dev);
2053 mutex_lock(&data->lock);
2055 /* Measurement values update every 2 seconds */
2056 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
2058 ret = adt7475_update_measure(dev);
2060 data->valid = false;
2061 mutex_unlock(&data->lock);
2062 return ERR_PTR(ret);
2064 data->measure_updated = jiffies;
2068 mutex_unlock(&data->lock);
2073 module_i2c_driver(adt7475_driver);
2075 MODULE_AUTHOR("Advanced Micro Devices, Inc");
2076 MODULE_DESCRIPTION("adt7475 driver");
2077 MODULE_LICENSE("GPL");