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/of_device.h>
14 #include <linux/init.h>
15 #include <linux/slab.h>
16 #include <linux/i2c.h>
17 #include <linux/hwmon.h>
18 #include <linux/hwmon-sysfs.h>
19 #include <linux/hwmon-vid.h>
20 #include <linux/err.h>
21 #include <linux/jiffies.h>
23 #include <linux/util_macros.h>
25 /* Indexes for the sysfs hooks */
37 * These are unique identifiers for the sysfs functions - unlike the
38 * numbers above, these are not also indexes into an array
44 /* 7475 Common Registers */
46 #define REG_DEVREV2 0x12 /* 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 VID_VIDSEL 0x80 /* ADT7476 only */
109 #define CONFIG2_ATTN 0x20
111 #define CONFIG3_SMBALERT 0x01
112 #define CONFIG3_THERM 0x02
114 #define CONFIG4_PINFUNC 0x03
115 #define CONFIG4_THERM 0x01
116 #define CONFIG4_SMBALERT 0x02
117 #define CONFIG4_MAXDUTY 0x08
118 #define CONFIG4_ATTN_IN10 0x30
119 #define CONFIG4_ATTN_IN43 0xC0
121 #define CONFIG5_TWOSCOMP 0x01
122 #define CONFIG5_TEMPOFFSET 0x02
123 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
125 /* ADT7475 Settings */
127 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
128 #define ADT7475_TEMP_COUNT 3
129 #define ADT7475_TACH_COUNT 4
130 #define ADT7475_PWM_COUNT 3
132 /* Macro to read the registers */
134 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
136 /* Macros to easily index the registers */
138 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
139 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
141 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
142 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
143 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
144 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
146 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
147 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
148 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
150 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
151 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
152 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
153 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
154 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
155 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
156 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
158 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
160 enum chips { adt7473, adt7475, adt7476, adt7490 };
162 static const struct i2c_device_id adt7475_id[] = {
163 { "adt7473", adt7473 },
164 { "adt7475", adt7475 },
165 { "adt7476", adt7476 },
166 { "adt7490", adt7490 },
169 MODULE_DEVICE_TABLE(i2c, adt7475_id);
171 static const struct of_device_id __maybe_unused adt7475_of_match[] = {
173 .compatible = "adi,adt7473",
174 .data = (void *)adt7473
177 .compatible = "adi,adt7475",
178 .data = (void *)adt7475
181 .compatible = "adi,adt7476",
182 .data = (void *)adt7476
185 .compatible = "adi,adt7490",
186 .data = (void *)adt7490
190 MODULE_DEVICE_TABLE(of, adt7475_of_match);
192 struct adt7475_data {
193 struct i2c_client *client;
196 unsigned long measure_updated;
203 u8 bypass_attn; /* Bypass voltage attenuator */
219 const struct attribute_group *groups[9];
222 static struct i2c_driver adt7475_driver;
223 static struct adt7475_data *adt7475_update_device(struct device *dev);
224 static void adt7475_read_hystersis(struct i2c_client *client);
225 static void adt7475_read_pwm(struct i2c_client *client, int index);
227 /* Given a temp value, convert it to register value */
229 static inline u16 temp2reg(struct adt7475_data *data, long val)
233 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
234 val = clamp_val(val, -64000, 191000);
235 ret = (val + 64500) / 1000;
237 val = clamp_val(val, -128000, 127000);
239 ret = (256500 + val) / 1000;
241 ret = (val + 500) / 1000;
247 /* Given a register value, convert it to a real temp value */
249 static inline int reg2temp(struct adt7475_data *data, u16 reg)
251 if (data->config5 & CONFIG5_TWOSCOMP) {
253 return (reg - 1024) * 250;
257 return (reg - 256) * 250;
260 static inline int tach2rpm(u16 tach)
262 if (tach == 0 || tach == 0xFFFF)
265 return (90000 * 60) / tach;
268 static inline u16 rpm2tach(unsigned long rpm)
273 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
276 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
277 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
278 { 45, 94 }, /* +2.5V */
279 { 175, 525 }, /* Vccp */
280 { 68, 71 }, /* Vcc */
281 { 93, 47 }, /* +5V */
282 { 120, 20 }, /* +12V */
283 { 45, 45 }, /* Vtt */
286 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
288 const int *r = adt7473_in_scaling[channel];
290 if (bypass_attn & (1 << channel))
291 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
292 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
295 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
297 const int *r = adt7473_in_scaling[channel];
300 if (bypass_attn & (1 << channel))
301 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
303 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
304 (r[0] + r[1]) * 2250);
305 return clamp_val(reg, 0, 1023) & (0xff << 2);
308 static int adt7475_read_word(struct i2c_client *client, int reg)
312 val1 = i2c_smbus_read_byte_data(client, reg);
315 val2 = i2c_smbus_read_byte_data(client, reg + 1);
319 return val1 | (val2 << 8);
322 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
324 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
325 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
328 static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
331 struct adt7475_data *data = adt7475_update_device(dev);
332 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
336 return PTR_ERR(data);
340 return sprintf(buf, "%d\n",
341 (data->alarms >> sattr->index) & 1);
343 val = data->voltage[sattr->nr][sattr->index];
344 return sprintf(buf, "%d\n",
345 reg2volt(sattr->index, val, data->bypass_attn));
349 static ssize_t voltage_store(struct device *dev,
350 struct device_attribute *attr, const char *buf,
354 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
355 struct adt7475_data *data = dev_get_drvdata(dev);
356 struct i2c_client *client = data->client;
360 if (kstrtol(buf, 10, &val))
363 mutex_lock(&data->lock);
365 data->voltage[sattr->nr][sattr->index] =
366 volt2reg(sattr->index, val, data->bypass_attn);
368 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
369 if (sattr->nr == MIN)
370 reg = VOLTAGE_MIN_REG(sattr->index);
372 reg = VOLTAGE_MAX_REG(sattr->index);
374 if (sattr->nr == MIN)
380 i2c_smbus_write_byte_data(client, reg,
381 data->voltage[sattr->nr][sattr->index] >> 2);
382 mutex_unlock(&data->lock);
387 static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
390 struct adt7475_data *data = adt7475_update_device(dev);
391 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
395 return PTR_ERR(data);
399 mutex_lock(&data->lock);
400 out = data->temp[sattr->nr][sattr->index];
401 if (sattr->index != 1)
402 out = (out >> 4) & 0xF;
406 * Show the value as an absolute number tied to
409 out = reg2temp(data, data->temp[THERM][sattr->index]) -
411 mutex_unlock(&data->lock);
416 * Offset is always 2's complement, regardless of the
419 mutex_lock(&data->lock);
420 out = (s8)data->temp[sattr->nr][sattr->index];
421 if (data->config5 & CONFIG5_TEMPOFFSET)
425 mutex_unlock(&data->lock);
429 out = (data->alarms >> (sattr->index + 4)) & 1;
433 /* Note - only for remote1 and remote2 */
434 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
438 /* All other temp values are in the configured format */
439 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
442 return sprintf(buf, "%d\n", out);
445 static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
446 const char *buf, size_t count)
448 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
449 struct adt7475_data *data = dev_get_drvdata(dev);
450 struct i2c_client *client = data->client;
451 unsigned char reg = 0;
456 if (kstrtol(buf, 10, &val))
459 mutex_lock(&data->lock);
461 /* We need the config register in all cases for temp <-> reg conv. */
462 data->config5 = adt7475_read(REG_CONFIG5);
466 if (data->config5 & CONFIG5_TEMPOFFSET) {
467 val = clamp_val(val, -63000, 127000);
468 out = data->temp[OFFSET][sattr->index] = val / 1000;
470 val = clamp_val(val, -63000, 64000);
471 out = data->temp[OFFSET][sattr->index] = val / 500;
477 * The value will be given as an absolute value, turn it
478 * into an offset based on THERM
481 /* Read fresh THERM and HYSTERSIS values from the chip */
482 data->temp[THERM][sattr->index] =
483 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
484 adt7475_read_hystersis(client);
486 temp = reg2temp(data, data->temp[THERM][sattr->index]);
487 val = clamp_val(val, temp - 15000, temp);
488 val = (temp - val) / 1000;
490 if (sattr->index != 1) {
491 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
492 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
494 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
495 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
498 out = data->temp[HYSTERSIS][sattr->index];
502 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
505 * We maintain an extra 2 digits of precision for simplicity
506 * - shift those back off before writing the value
508 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
513 reg = TEMP_MIN_REG(sattr->index);
516 reg = TEMP_MAX_REG(sattr->index);
519 reg = TEMP_OFFSET_REG(sattr->index);
522 reg = TEMP_TMIN_REG(sattr->index);
525 reg = TEMP_THERM_REG(sattr->index);
528 if (sattr->index != 2)
529 reg = REG_REMOTE1_HYSTERSIS;
531 reg = REG_REMOTE2_HYSTERSIS;
536 i2c_smbus_write_byte_data(client, reg, out);
538 mutex_unlock(&data->lock);
542 /* Assuming CONFIG6[SLOW] is 0 */
543 static const int ad7475_st_map[] = {
544 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
547 static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
550 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
551 struct adt7475_data *data = dev_get_drvdata(dev);
554 switch (sattr->index) {
556 val = data->enh_acoustics[0] & 0xf;
559 val = data->enh_acoustics[1] & 0xf;
563 val = (data->enh_acoustics[1] >> 4) & 0xf;
568 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
570 return sprintf(buf, "0\n");
573 static ssize_t temp_st_store(struct device *dev,
574 struct device_attribute *attr, const char *buf,
577 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
578 struct adt7475_data *data = dev_get_drvdata(dev);
579 struct i2c_client *client = data->client;
584 if (kstrtoul(buf, 10, &val))
587 switch (sattr->index) {
589 reg = REG_ENHANCE_ACOUSTICS1;
594 reg = REG_ENHANCE_ACOUSTICS2;
600 reg = REG_ENHANCE_ACOUSTICS2;
607 val = find_closest_descending(val, ad7475_st_map,
608 ARRAY_SIZE(ad7475_st_map));
612 mutex_lock(&data->lock);
614 data->enh_acoustics[idx] &= ~(0xf << shift);
615 data->enh_acoustics[idx] |= (val << shift);
617 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
619 mutex_unlock(&data->lock);
625 * Table of autorange values - the user will write the value in millidegrees,
626 * and we'll convert it
628 static const int autorange_table[] = {
629 2000, 2500, 3330, 4000, 5000, 6670, 8000,
630 10000, 13330, 16000, 20000, 26670, 32000, 40000,
634 static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
637 struct adt7475_data *data = adt7475_update_device(dev);
638 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
642 return PTR_ERR(data);
644 mutex_lock(&data->lock);
645 out = (data->range[sattr->index] >> 4) & 0x0F;
646 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
647 mutex_unlock(&data->lock);
649 return sprintf(buf, "%d\n", val + autorange_table[out]);
652 static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
653 const char *buf, size_t count)
655 struct adt7475_data *data = dev_get_drvdata(dev);
656 struct i2c_client *client = data->client;
657 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
661 if (kstrtol(buf, 10, &val))
664 mutex_lock(&data->lock);
666 /* Get a fresh copy of the needed registers */
667 data->config5 = adt7475_read(REG_CONFIG5);
668 data->temp[AUTOMIN][sattr->index] =
669 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
670 data->range[sattr->index] =
671 adt7475_read(TEMP_TRANGE_REG(sattr->index));
674 * The user will write an absolute value, so subtract the start point
675 * to figure the range
677 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
678 val = clamp_val(val, temp + autorange_table[0],
679 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
682 /* Find the nearest table entry to what the user wrote */
683 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
685 data->range[sattr->index] &= ~0xF0;
686 data->range[sattr->index] |= val << 4;
688 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
689 data->range[sattr->index]);
691 mutex_unlock(&data->lock);
695 static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
698 struct adt7475_data *data = adt7475_update_device(dev);
699 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
703 return PTR_ERR(data);
705 if (sattr->nr == ALARM)
706 out = (data->alarms >> (sattr->index + 10)) & 1;
708 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
710 return sprintf(buf, "%d\n", out);
713 static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
714 const char *buf, size_t count)
717 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
718 struct adt7475_data *data = dev_get_drvdata(dev);
719 struct i2c_client *client = data->client;
722 if (kstrtoul(buf, 10, &val))
725 mutex_lock(&data->lock);
727 data->tach[MIN][sattr->index] = rpm2tach(val);
729 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
730 data->tach[MIN][sattr->index]);
732 mutex_unlock(&data->lock);
736 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
739 struct adt7475_data *data = adt7475_update_device(dev);
740 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
743 return PTR_ERR(data);
745 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
748 static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
751 struct adt7475_data *data = adt7475_update_device(dev);
752 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
755 return PTR_ERR(data);
757 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
760 static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
763 struct adt7475_data *data = adt7475_update_device(dev);
764 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
767 return PTR_ERR(data);
769 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
772 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
773 const char *buf, size_t count)
776 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
777 struct adt7475_data *data = dev_get_drvdata(dev);
778 struct i2c_client *client = data->client;
779 unsigned char reg = 0;
782 if (kstrtol(buf, 10, &val))
785 mutex_lock(&data->lock);
789 /* Get a fresh value for CONTROL */
790 data->pwm[CONTROL][sattr->index] =
791 adt7475_read(PWM_CONFIG_REG(sattr->index));
794 * If we are not in manual mode, then we shouldn't allow
795 * the user to set the pwm speed
797 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
798 mutex_unlock(&data->lock);
802 reg = PWM_REG(sattr->index);
806 reg = PWM_MIN_REG(sattr->index);
810 reg = PWM_MAX_REG(sattr->index);
814 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
815 i2c_smbus_write_byte_data(client, reg,
816 data->pwm[sattr->nr][sattr->index]);
817 mutex_unlock(&data->lock);
822 static ssize_t stall_disable_show(struct device *dev,
823 struct device_attribute *attr, char *buf)
825 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
826 struct adt7475_data *data = dev_get_drvdata(dev);
828 u8 mask = BIT(5 + sattr->index);
830 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
833 static ssize_t stall_disable_store(struct device *dev,
834 struct device_attribute *attr,
835 const char *buf, size_t count)
837 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
838 struct adt7475_data *data = dev_get_drvdata(dev);
839 struct i2c_client *client = data->client;
841 u8 mask = BIT(5 + sattr->index);
843 if (kstrtol(buf, 10, &val))
846 mutex_lock(&data->lock);
848 data->enh_acoustics[0] &= ~mask;
850 data->enh_acoustics[0] |= mask;
852 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
853 data->enh_acoustics[0]);
855 mutex_unlock(&data->lock);
860 /* Called by set_pwmctrl and set_pwmchan */
862 static int hw_set_pwm(struct i2c_client *client, int index,
863 unsigned int pwmctl, unsigned int pwmchan)
865 struct adt7475_data *data = i2c_get_clientdata(client);
870 val = 0x03; /* Run at full speed */
873 val = 0x07; /* Manual mode */
878 /* Remote1 controls PWM */
882 /* local controls PWM */
886 /* remote2 controls PWM */
890 /* local/remote2 control PWM */
894 /* All three control PWM */
905 data->pwmctl[index] = pwmctl;
906 data->pwmchan[index] = pwmchan;
908 data->pwm[CONTROL][index] &= ~0xE0;
909 data->pwm[CONTROL][index] |= (val & 7) << 5;
911 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
912 data->pwm[CONTROL][index]);
917 static ssize_t pwmchan_store(struct device *dev,
918 struct device_attribute *attr, const char *buf,
921 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
922 struct adt7475_data *data = dev_get_drvdata(dev);
923 struct i2c_client *client = data->client;
927 if (kstrtol(buf, 10, &val))
930 mutex_lock(&data->lock);
931 /* Read Modify Write PWM values */
932 adt7475_read_pwm(client, sattr->index);
933 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
936 mutex_unlock(&data->lock);
941 static ssize_t pwmctrl_store(struct device *dev,
942 struct device_attribute *attr, const char *buf,
945 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
946 struct adt7475_data *data = dev_get_drvdata(dev);
947 struct i2c_client *client = data->client;
951 if (kstrtol(buf, 10, &val))
954 mutex_lock(&data->lock);
955 /* Read Modify Write PWM values */
956 adt7475_read_pwm(client, sattr->index);
957 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
960 mutex_unlock(&data->lock);
965 /* List of frequencies for the PWM */
966 static const int pwmfreq_table[] = {
967 11, 14, 22, 29, 35, 44, 58, 88, 22500
970 static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
973 struct adt7475_data *data = adt7475_update_device(dev);
974 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
978 return PTR_ERR(data);
979 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
980 ARRAY_SIZE(pwmfreq_table) - 1);
982 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
985 static ssize_t pwmfreq_store(struct device *dev,
986 struct device_attribute *attr, const char *buf,
989 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
990 struct adt7475_data *data = dev_get_drvdata(dev);
991 struct i2c_client *client = data->client;
995 if (kstrtol(buf, 10, &val))
998 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
1000 mutex_lock(&data->lock);
1002 data->range[sattr->index] =
1003 adt7475_read(TEMP_TRANGE_REG(sattr->index));
1004 data->range[sattr->index] &= ~0xf;
1005 data->range[sattr->index] |= out;
1007 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1008 data->range[sattr->index]);
1010 mutex_unlock(&data->lock);
1014 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1015 struct device_attribute *devattr,
1018 struct adt7475_data *data = adt7475_update_device(dev);
1021 return PTR_ERR(data);
1023 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1026 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1027 struct device_attribute *devattr,
1028 const char *buf, size_t count)
1030 struct adt7475_data *data = dev_get_drvdata(dev);
1031 struct i2c_client *client = data->client;
1034 if (kstrtol(buf, 10, &val))
1036 if (val != 0 && val != 1)
1039 mutex_lock(&data->lock);
1040 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1042 data->config4 |= CONFIG4_MAXDUTY;
1044 data->config4 &= ~CONFIG4_MAXDUTY;
1045 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1046 mutex_unlock(&data->lock);
1051 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1054 struct adt7475_data *data = dev_get_drvdata(dev);
1055 return sprintf(buf, "%d\n", (int)data->vrm);
1058 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1059 const char *buf, size_t count)
1061 struct adt7475_data *data = dev_get_drvdata(dev);
1064 if (kstrtol(buf, 10, &val))
1066 if (val < 0 || val > 255)
1073 static ssize_t cpu0_vid_show(struct device *dev,
1074 struct device_attribute *devattr, char *buf)
1076 struct adt7475_data *data = adt7475_update_device(dev);
1079 return PTR_ERR(data);
1081 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1084 static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1085 static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1086 static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1087 static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1088 static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1089 static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1090 static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1091 static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1092 static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1093 static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1094 static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1095 static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1096 static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1097 static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1098 static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1099 static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1100 static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1101 static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1102 static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1103 static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1104 static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1105 static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1106 static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1107 static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1108 static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1109 static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1110 static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1111 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1112 static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1113 static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1114 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1115 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1116 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1117 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1118 static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1119 static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1120 static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1121 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1122 static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1123 static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1124 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1125 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1126 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1127 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1128 static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1129 static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1130 static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1131 static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1132 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1133 static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1134 static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1135 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1136 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1137 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1138 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1139 static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1140 static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1141 static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1142 static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1143 static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1144 static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1145 static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1146 static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1147 static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1148 static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1149 static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1150 static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1151 static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1152 static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1153 static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1154 static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1155 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1156 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1157 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1158 static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1159 static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1160 static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1161 static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1162 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1163 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1164 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1165 static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1166 static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1167 static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1168 static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1169 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1170 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1171 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1172 static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1174 /* Non-standard name, might need revisiting */
1175 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1177 static DEVICE_ATTR_RW(vrm);
1178 static DEVICE_ATTR_RO(cpu0_vid);
1180 static struct attribute *adt7475_attrs[] = {
1181 &sensor_dev_attr_in1_input.dev_attr.attr,
1182 &sensor_dev_attr_in1_max.dev_attr.attr,
1183 &sensor_dev_attr_in1_min.dev_attr.attr,
1184 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1185 &sensor_dev_attr_in2_input.dev_attr.attr,
1186 &sensor_dev_attr_in2_max.dev_attr.attr,
1187 &sensor_dev_attr_in2_min.dev_attr.attr,
1188 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1189 &sensor_dev_attr_temp1_input.dev_attr.attr,
1190 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1191 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1192 &sensor_dev_attr_temp1_max.dev_attr.attr,
1193 &sensor_dev_attr_temp1_min.dev_attr.attr,
1194 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1195 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1196 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1197 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1198 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1199 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1200 &sensor_dev_attr_temp2_input.dev_attr.attr,
1201 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1202 &sensor_dev_attr_temp2_max.dev_attr.attr,
1203 &sensor_dev_attr_temp2_min.dev_attr.attr,
1204 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1205 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1206 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1207 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1208 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1209 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1210 &sensor_dev_attr_temp3_input.dev_attr.attr,
1211 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1212 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1213 &sensor_dev_attr_temp3_max.dev_attr.attr,
1214 &sensor_dev_attr_temp3_min.dev_attr.attr,
1215 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1216 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1217 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1218 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1219 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1220 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1221 &sensor_dev_attr_fan1_input.dev_attr.attr,
1222 &sensor_dev_attr_fan1_min.dev_attr.attr,
1223 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1224 &sensor_dev_attr_fan2_input.dev_attr.attr,
1225 &sensor_dev_attr_fan2_min.dev_attr.attr,
1226 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1227 &sensor_dev_attr_fan3_input.dev_attr.attr,
1228 &sensor_dev_attr_fan3_min.dev_attr.attr,
1229 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1230 &sensor_dev_attr_pwm1.dev_attr.attr,
1231 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1232 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1233 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1234 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1235 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1236 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1237 &sensor_dev_attr_pwm3.dev_attr.attr,
1238 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1239 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1240 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1241 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1242 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1243 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1244 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1248 static struct attribute *fan4_attrs[] = {
1249 &sensor_dev_attr_fan4_input.dev_attr.attr,
1250 &sensor_dev_attr_fan4_min.dev_attr.attr,
1251 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1255 static struct attribute *pwm2_attrs[] = {
1256 &sensor_dev_attr_pwm2.dev_attr.attr,
1257 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1258 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1259 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1260 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1261 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1262 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1266 static struct attribute *in0_attrs[] = {
1267 &sensor_dev_attr_in0_input.dev_attr.attr,
1268 &sensor_dev_attr_in0_max.dev_attr.attr,
1269 &sensor_dev_attr_in0_min.dev_attr.attr,
1270 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1274 static struct attribute *in3_attrs[] = {
1275 &sensor_dev_attr_in3_input.dev_attr.attr,
1276 &sensor_dev_attr_in3_max.dev_attr.attr,
1277 &sensor_dev_attr_in3_min.dev_attr.attr,
1278 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1282 static struct attribute *in4_attrs[] = {
1283 &sensor_dev_attr_in4_input.dev_attr.attr,
1284 &sensor_dev_attr_in4_max.dev_attr.attr,
1285 &sensor_dev_attr_in4_min.dev_attr.attr,
1286 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1290 static struct attribute *in5_attrs[] = {
1291 &sensor_dev_attr_in5_input.dev_attr.attr,
1292 &sensor_dev_attr_in5_max.dev_attr.attr,
1293 &sensor_dev_attr_in5_min.dev_attr.attr,
1294 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1298 static struct attribute *vid_attrs[] = {
1299 &dev_attr_cpu0_vid.attr,
1304 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1305 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1306 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1307 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1308 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1309 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1310 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1311 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1313 static int adt7475_detect(struct i2c_client *client,
1314 struct i2c_board_info *info)
1316 struct i2c_adapter *adapter = client->adapter;
1317 int vendid, devid, devid2;
1320 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1323 vendid = adt7475_read(REG_VENDID);
1324 devid2 = adt7475_read(REG_DEVID2);
1325 if (vendid != 0x41 || /* Analog Devices */
1326 (devid2 & 0xf8) != 0x68)
1329 devid = adt7475_read(REG_DEVID);
1332 else if (devid == 0x75 && client->addr == 0x2e)
1334 else if (devid == 0x76)
1336 else if ((devid2 & 0xfc) == 0x6c)
1339 dev_dbg(&adapter->dev,
1340 "Couldn't detect an ADT7473/75/76/90 part at "
1341 "0x%02x\n", (unsigned int)client->addr);
1345 strscpy(info->type, name, I2C_NAME_SIZE);
1350 static int adt7475_update_limits(struct i2c_client *client)
1352 struct adt7475_data *data = i2c_get_clientdata(client);
1356 ret = adt7475_read(REG_CONFIG4);
1359 data->config4 = ret;
1361 ret = adt7475_read(REG_CONFIG5);
1364 data->config5 = ret;
1366 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1367 if (!(data->has_voltage & (1 << i)))
1369 /* Adjust values so they match the input precision */
1370 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1373 data->voltage[MIN][i] = ret << 2;
1375 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1378 data->voltage[MAX][i] = ret << 2;
1381 if (data->has_voltage & (1 << 5)) {
1382 ret = adt7475_read(REG_VTT_MIN);
1385 data->voltage[MIN][5] = ret << 2;
1387 ret = adt7475_read(REG_VTT_MAX);
1390 data->voltage[MAX][5] = ret << 2;
1393 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1394 /* Adjust values so they match the input precision */
1395 ret = adt7475_read(TEMP_MIN_REG(i));
1398 data->temp[MIN][i] = ret << 2;
1400 ret = adt7475_read(TEMP_MAX_REG(i));
1403 data->temp[MAX][i] = ret << 2;
1405 ret = adt7475_read(TEMP_TMIN_REG(i));
1408 data->temp[AUTOMIN][i] = ret << 2;
1410 ret = adt7475_read(TEMP_THERM_REG(i));
1413 data->temp[THERM][i] = ret << 2;
1415 ret = adt7475_read(TEMP_OFFSET_REG(i));
1418 data->temp[OFFSET][i] = ret;
1420 adt7475_read_hystersis(client);
1422 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1423 if (i == 3 && !data->has_fan4)
1425 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1428 data->tach[MIN][i] = ret;
1431 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1432 if (i == 1 && !data->has_pwm2)
1434 ret = adt7475_read(PWM_MAX_REG(i));
1437 data->pwm[MAX][i] = ret;
1439 ret = adt7475_read(PWM_MIN_REG(i));
1442 data->pwm[MIN][i] = ret;
1443 /* Set the channel and control information */
1444 adt7475_read_pwm(client, i);
1447 ret = adt7475_read(TEMP_TRANGE_REG(0));
1450 data->range[0] = ret;
1452 ret = adt7475_read(TEMP_TRANGE_REG(1));
1455 data->range[1] = ret;
1457 ret = adt7475_read(TEMP_TRANGE_REG(2));
1460 data->range[2] = ret;
1465 static int load_config3(const struct i2c_client *client, const char *propname)
1467 const char *function;
1471 ret = device_property_read_string(&client->dev, propname, &function);
1473 ret = adt7475_read(REG_CONFIG3);
1477 config3 = ret & ~CONFIG3_SMBALERT;
1478 if (!strcmp("pwm2", function))
1480 else if (!strcmp("smbalert#", function))
1481 config3 |= CONFIG3_SMBALERT;
1485 return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
1491 static int load_config4(const struct i2c_client *client, const char *propname)
1493 const char *function;
1497 ret = device_property_read_string(&client->dev, propname, &function);
1499 ret = adt7475_read(REG_CONFIG4);
1503 config4 = ret & ~CONFIG4_PINFUNC;
1505 if (!strcmp("tach4", function))
1507 else if (!strcmp("therm#", function))
1508 config4 |= CONFIG4_THERM;
1509 else if (!strcmp("smbalert#", function))
1510 config4 |= CONFIG4_SMBALERT;
1511 else if (!strcmp("gpio", function))
1512 config4 |= CONFIG4_PINFUNC;
1516 return i2c_smbus_write_byte_data(client, REG_CONFIG4, config4);
1522 static int load_config(const struct i2c_client *client, enum chips chip)
1525 const char *prop1, *prop2;
1530 prop1 = "adi,pin5-function";
1531 prop2 = "adi,pin9-function";
1535 prop1 = "adi,pin10-function";
1536 prop2 = "adi,pin14-function";
1540 err = load_config3(client, prop1);
1542 dev_err(&client->dev, "failed to configure %s\n", prop1);
1546 err = load_config4(client, prop2);
1548 dev_err(&client->dev, "failed to configure %s\n", prop2);
1555 static int set_property_bit(const struct i2c_client *client, char *property,
1556 u8 *config, u8 bit_index)
1559 int ret = device_property_read_u32(&client->dev, property,
1564 *config |= (1 << bit_index);
1566 *config &= ~(1 << bit_index);
1572 static int load_attenuators(const struct i2c_client *client, enum chips chip,
1573 struct adt7475_data *data)
1578 set_property_bit(client, "adi,bypass-attenuator-in0",
1580 set_property_bit(client, "adi,bypass-attenuator-in1",
1582 set_property_bit(client, "adi,bypass-attenuator-in3",
1584 set_property_bit(client, "adi,bypass-attenuator-in4",
1587 return i2c_smbus_write_byte_data(client, REG_CONFIG4,
1591 set_property_bit(client, "adi,bypass-attenuator-in1",
1594 return i2c_smbus_write_byte_data(client, REG_CONFIG2,
1601 static int adt7475_set_pwm_polarity(struct i2c_client *client)
1603 u32 states[ADT7475_PWM_COUNT];
1607 ret = device_property_read_u32_array(&client->dev,
1608 "adi,pwm-active-state", states,
1609 ARRAY_SIZE(states));
1613 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1614 ret = adt7475_read(PWM_CONFIG_REG(i));
1623 ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(i), val);
1631 static int adt7475_probe(struct i2c_client *client)
1634 static const char * const names[] = {
1635 [adt7473] = "ADT7473",
1636 [adt7475] = "ADT7475",
1637 [adt7476] = "ADT7476",
1638 [adt7490] = "ADT7490",
1641 struct adt7475_data *data;
1642 struct device *hwmon_dev;
1643 int i, ret = 0, revision, group_num = 0;
1645 const struct i2c_device_id *id = i2c_match_id(adt7475_id, client);
1647 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1651 mutex_init(&data->lock);
1652 data->client = client;
1653 i2c_set_clientdata(client, data);
1655 if (client->dev.of_node)
1656 chip = (enum chips)of_device_get_match_data(&client->dev);
1658 chip = id->driver_data;
1660 /* Initialize device-specific values */
1663 data->has_voltage = 0x0e; /* in1 to in3 */
1664 revision = adt7475_read(REG_DEVID2) & 0x07;
1667 data->has_voltage = 0x3e; /* in1 to in5 */
1668 revision = adt7475_read(REG_DEVID2) & 0x03;
1669 if (revision == 0x03)
1670 revision += adt7475_read(REG_DEVREV2);
1673 data->has_voltage = 0x06; /* in1, in2 */
1674 revision = adt7475_read(REG_DEVID2) & 0x07;
1677 ret = load_config(client, chip);
1681 config3 = adt7475_read(REG_CONFIG3);
1682 /* Pin PWM2 may alternatively be used for ALERT output */
1683 if (!(config3 & CONFIG3_SMBALERT))
1685 /* Meaning of this bit is inverted for the ADT7473-1 */
1686 if (id->driver_data == adt7473 && revision >= 1)
1687 data->has_pwm2 = !data->has_pwm2;
1689 data->config4 = adt7475_read(REG_CONFIG4);
1690 /* Pin TACH4 may alternatively be used for THERM */
1691 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1695 * THERM configuration is more complex on the ADT7476 and ADT7490,
1696 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1699 if (id->driver_data == adt7490) {
1700 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1701 !(config3 & CONFIG3_THERM))
1704 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1705 if (!(config3 & CONFIG3_THERM) ||
1706 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1707 data->has_voltage |= (1 << 0); /* in0 */
1711 * On the ADT7476, the +12V input pin may instead be used as VID5,
1712 * and VID pins may alternatively be used as GPIO
1714 if (id->driver_data == adt7476) {
1715 u8 vid = adt7475_read(REG_VID);
1716 if (!(vid & VID_VIDSEL))
1717 data->has_voltage |= (1 << 4); /* in4 */
1719 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1722 /* Voltage attenuators can be bypassed, globally or individually */
1723 data->config2 = adt7475_read(REG_CONFIG2);
1724 ret = load_attenuators(client, chip, data);
1726 dev_warn(&client->dev, "Error configuring attenuator bypass\n");
1728 if (data->config2 & CONFIG2_ATTN) {
1729 data->bypass_attn = (0x3 << 3) | 0x3;
1731 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1732 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1734 data->bypass_attn &= data->has_voltage;
1737 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1738 * pwm's which are disabled to manual mode with 0% duty cycle
1740 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1741 adt7475_read_pwm(client, i);
1743 ret = adt7475_set_pwm_polarity(client);
1744 if (ret && ret != -EINVAL)
1745 dev_warn(&client->dev, "Error configuring pwm polarity\n");
1747 /* Start monitoring */
1751 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1752 adt7475_read(REG_CONFIG1) | 0x01);
1758 data->groups[group_num++] = &adt7475_attr_group;
1760 /* Features that can be disabled individually */
1761 if (data->has_fan4) {
1762 data->groups[group_num++] = &fan4_attr_group;
1764 if (data->has_pwm2) {
1765 data->groups[group_num++] = &pwm2_attr_group;
1767 if (data->has_voltage & (1 << 0)) {
1768 data->groups[group_num++] = &in0_attr_group;
1770 if (data->has_voltage & (1 << 3)) {
1771 data->groups[group_num++] = &in3_attr_group;
1773 if (data->has_voltage & (1 << 4)) {
1774 data->groups[group_num++] = &in4_attr_group;
1776 if (data->has_voltage & (1 << 5)) {
1777 data->groups[group_num++] = &in5_attr_group;
1779 if (data->has_vid) {
1780 data->vrm = vid_which_vrm();
1781 data->groups[group_num] = &vid_attr_group;
1784 /* register device with all the acquired attributes */
1785 hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
1789 if (IS_ERR(hwmon_dev)) {
1790 ret = PTR_ERR(hwmon_dev);
1794 dev_info(&client->dev, "%s device, revision %d\n",
1795 names[id->driver_data], revision);
1796 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1797 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1798 (data->has_voltage & (1 << 0)) ? " in0" : "",
1799 (data->has_voltage & (1 << 4)) ? " in4" : "",
1800 data->has_fan4 ? " fan4" : "",
1801 data->has_pwm2 ? " pwm2" : "",
1802 data->has_vid ? " vid" : "");
1803 if (data->bypass_attn)
1804 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1805 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1806 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1807 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1808 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1810 /* Limits and settings, should never change update more than once */
1811 ret = adt7475_update_limits(client);
1818 static struct i2c_driver adt7475_driver = {
1819 .class = I2C_CLASS_HWMON,
1822 .of_match_table = of_match_ptr(adt7475_of_match),
1824 .probe = adt7475_probe,
1825 .id_table = adt7475_id,
1826 .detect = adt7475_detect,
1827 .address_list = normal_i2c,
1830 static void adt7475_read_hystersis(struct i2c_client *client)
1832 struct adt7475_data *data = i2c_get_clientdata(client);
1834 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1835 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1836 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1839 static void adt7475_read_pwm(struct i2c_client *client, int index)
1841 struct adt7475_data *data = i2c_get_clientdata(client);
1844 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1847 * Figure out the internal value for pwmctrl and pwmchan
1848 * based on the current settings
1850 v = (data->pwm[CONTROL][index] >> 5) & 7;
1853 data->pwmctl[index] = 0;
1855 data->pwmctl[index] = 1;
1858 * The fan is disabled - we don't want to
1859 * support that, so change to manual mode and
1860 * set the duty cycle to 0 instead
1862 data->pwm[INPUT][index] = 0;
1863 data->pwm[CONTROL][index] &= ~0xE0;
1864 data->pwm[CONTROL][index] |= (7 << 5);
1866 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1867 data->pwm[INPUT][index]);
1869 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1870 data->pwm[CONTROL][index]);
1872 data->pwmctl[index] = 1;
1874 data->pwmctl[index] = 2;
1878 data->pwmchan[index] = 1;
1881 data->pwmchan[index] = 2;
1884 data->pwmchan[index] = 4;
1887 data->pwmchan[index] = 6;
1890 data->pwmchan[index] = 7;
1896 static int adt7475_update_measure(struct device *dev)
1898 struct adt7475_data *data = dev_get_drvdata(dev);
1899 struct i2c_client *client = data->client;
1904 ret = adt7475_read(REG_STATUS2);
1907 data->alarms = ret << 8;
1909 ret = adt7475_read(REG_STATUS1);
1912 data->alarms |= ret;
1914 ret = adt7475_read(REG_EXTEND2);
1920 ret = adt7475_read(REG_EXTEND1);
1926 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1927 if (!(data->has_voltage & (1 << i)))
1929 ret = adt7475_read(VOLTAGE_REG(i));
1932 data->voltage[INPUT][i] =
1934 ((ext >> (i * 2)) & 3);
1937 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1938 ret = adt7475_read(TEMP_REG(i));
1941 data->temp[INPUT][i] =
1943 ((ext >> ((i + 5) * 2)) & 3);
1946 if (data->has_voltage & (1 << 5)) {
1947 ret = adt7475_read(REG_STATUS4);
1950 data->alarms |= ret << 24;
1952 ret = adt7475_read(REG_EXTEND3);
1957 ret = adt7475_read(REG_VTT);
1960 data->voltage[INPUT][5] = ret << 2 |
1964 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1965 if (i == 3 && !data->has_fan4)
1967 ret = adt7475_read_word(client, TACH_REG(i));
1970 data->tach[INPUT][i] = ret;
1973 /* Updated by hw when in auto mode */
1974 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1975 if (i == 1 && !data->has_pwm2)
1977 ret = adt7475_read(PWM_REG(i));
1980 data->pwm[INPUT][i] = ret;
1983 if (data->has_vid) {
1984 ret = adt7475_read(REG_VID);
1987 data->vid = ret & 0x3f;
1993 static struct adt7475_data *adt7475_update_device(struct device *dev)
1995 struct adt7475_data *data = dev_get_drvdata(dev);
1998 mutex_lock(&data->lock);
2000 /* Measurement values update every 2 seconds */
2001 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
2003 ret = adt7475_update_measure(dev);
2005 data->valid = false;
2006 mutex_unlock(&data->lock);
2007 return ERR_PTR(ret);
2009 data->measure_updated = jiffies;
2013 mutex_unlock(&data->lock);
2018 module_i2c_driver(adt7475_driver);
2020 MODULE_AUTHOR("Advanced Micro Devices, Inc");
2021 MODULE_DESCRIPTION("adt7475 driver");
2022 MODULE_LICENSE("GPL");