2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
8 * Derived from the lm83 driver by Jean Delvare
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/of_device.h>
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/i2c.h>
20 #include <linux/hwmon.h>
21 #include <linux/hwmon-sysfs.h>
22 #include <linux/hwmon-vid.h>
23 #include <linux/err.h>
24 #include <linux/jiffies.h>
25 #include <linux/util_macros.h>
27 /* Indexes for the sysfs hooks */
39 * These are unique identifiers for the sysfs functions - unlike the
40 * numbers above, these are not also indexes into an array
46 /* 7475 Common Registers */
48 #define REG_DEVREV2 0x12 /* ADT7490 only */
50 #define REG_VTT 0x1E /* ADT7490 only */
51 #define REG_EXTEND3 0x1F /* ADT7490 only */
53 #define REG_VOLTAGE_BASE 0x20
54 #define REG_TEMP_BASE 0x25
55 #define REG_TACH_BASE 0x28
56 #define REG_PWM_BASE 0x30
57 #define REG_PWM_MAX_BASE 0x38
59 #define REG_DEVID 0x3D
60 #define REG_VENDID 0x3E
61 #define REG_DEVID2 0x3F
63 #define REG_CONFIG1 0x40
65 #define REG_STATUS1 0x41
66 #define REG_STATUS2 0x42
68 #define REG_VID 0x43 /* ADT7476 only */
70 #define REG_VOLTAGE_MIN_BASE 0x44
71 #define REG_VOLTAGE_MAX_BASE 0x45
73 #define REG_TEMP_MIN_BASE 0x4E
74 #define REG_TEMP_MAX_BASE 0x4F
76 #define REG_TACH_MIN_BASE 0x54
78 #define REG_PWM_CONFIG_BASE 0x5C
80 #define REG_TEMP_TRANGE_BASE 0x5F
82 #define REG_ENHANCE_ACOUSTICS1 0x62
83 #define REG_ENHANCE_ACOUSTICS2 0x63
85 #define REG_PWM_MIN_BASE 0x64
87 #define REG_TEMP_TMIN_BASE 0x67
88 #define REG_TEMP_THERM_BASE 0x6A
90 #define REG_REMOTE1_HYSTERSIS 0x6D
91 #define REG_REMOTE2_HYSTERSIS 0x6E
93 #define REG_TEMP_OFFSET_BASE 0x70
95 #define REG_CONFIG2 0x73
97 #define REG_EXTEND1 0x76
98 #define REG_EXTEND2 0x77
100 #define REG_CONFIG3 0x78
101 #define REG_CONFIG5 0x7C
102 #define REG_CONFIG4 0x7D
104 #define REG_STATUS4 0x81 /* ADT7490 only */
106 #define REG_VTT_MIN 0x84 /* ADT7490 only */
107 #define REG_VTT_MAX 0x86 /* ADT7490 only */
109 #define VID_VIDSEL 0x80 /* ADT7476 only */
111 #define CONFIG2_ATTN 0x20
113 #define CONFIG3_SMBALERT 0x01
114 #define CONFIG3_THERM 0x02
116 #define CONFIG4_PINFUNC 0x03
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 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 device *hwmon_dev;
196 unsigned long measure_updated;
202 u8 bypass_attn; /* Bypass voltage attenuator */
220 static struct i2c_driver adt7475_driver;
221 static struct adt7475_data *adt7475_update_device(struct device *dev);
222 static void adt7475_read_hystersis(struct i2c_client *client);
223 static void adt7475_read_pwm(struct i2c_client *client, int index);
225 /* Given a temp value, convert it to register value */
227 static inline u16 temp2reg(struct adt7475_data *data, long val)
231 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
232 val = clamp_val(val, -64000, 191000);
233 ret = (val + 64500) / 1000;
235 val = clamp_val(val, -128000, 127000);
237 ret = (256500 + val) / 1000;
239 ret = (val + 500) / 1000;
245 /* Given a register value, convert it to a real temp value */
247 static inline int reg2temp(struct adt7475_data *data, u16 reg)
249 if (data->config5 & CONFIG5_TWOSCOMP) {
251 return (reg - 1024) * 250;
255 return (reg - 256) * 250;
258 static inline int tach2rpm(u16 tach)
260 if (tach == 0 || tach == 0xFFFF)
263 return (90000 * 60) / tach;
266 static inline u16 rpm2tach(unsigned long rpm)
271 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
274 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
275 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
276 { 45, 94 }, /* +2.5V */
277 { 175, 525 }, /* Vccp */
278 { 68, 71 }, /* Vcc */
279 { 93, 47 }, /* +5V */
280 { 120, 20 }, /* +12V */
281 { 45, 45 }, /* Vtt */
284 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
286 const int *r = adt7473_in_scaling[channel];
288 if (bypass_attn & (1 << channel))
289 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
290 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
293 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
295 const int *r = adt7473_in_scaling[channel];
298 if (bypass_attn & (1 << channel))
299 reg = (volt * 1024) / 2250;
301 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
302 return clamp_val(reg, 0, 1023) & (0xff << 2);
305 static u16 adt7475_read_word(struct i2c_client *client, int reg)
309 val = i2c_smbus_read_byte_data(client, reg);
310 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
315 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
317 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
318 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
321 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
324 struct adt7475_data *data = adt7475_update_device(dev);
325 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
329 return PTR_ERR(data);
333 return sprintf(buf, "%d\n",
334 (data->alarms >> sattr->index) & 1);
336 val = data->voltage[sattr->nr][sattr->index];
337 return sprintf(buf, "%d\n",
338 reg2volt(sattr->index, val, data->bypass_attn));
342 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
343 const char *buf, size_t count)
346 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
347 struct i2c_client *client = to_i2c_client(dev);
348 struct adt7475_data *data = i2c_get_clientdata(client);
352 if (kstrtol(buf, 10, &val))
355 mutex_lock(&data->lock);
357 data->voltage[sattr->nr][sattr->index] =
358 volt2reg(sattr->index, val, data->bypass_attn);
360 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
361 if (sattr->nr == MIN)
362 reg = VOLTAGE_MIN_REG(sattr->index);
364 reg = VOLTAGE_MAX_REG(sattr->index);
366 if (sattr->nr == MIN)
372 i2c_smbus_write_byte_data(client, reg,
373 data->voltage[sattr->nr][sattr->index] >> 2);
374 mutex_unlock(&data->lock);
379 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
382 struct adt7475_data *data = adt7475_update_device(dev);
383 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
387 return PTR_ERR(data);
391 mutex_lock(&data->lock);
392 out = data->temp[sattr->nr][sattr->index];
393 if (sattr->index != 1)
394 out = (out >> 4) & 0xF;
398 * Show the value as an absolute number tied to
401 out = reg2temp(data, data->temp[THERM][sattr->index]) -
403 mutex_unlock(&data->lock);
408 * Offset is always 2's complement, regardless of the
411 mutex_lock(&data->lock);
412 out = (s8)data->temp[sattr->nr][sattr->index];
413 if (data->config5 & CONFIG5_TEMPOFFSET)
417 mutex_unlock(&data->lock);
421 out = (data->alarms >> (sattr->index + 4)) & 1;
425 /* Note - only for remote1 and remote2 */
426 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
430 /* All other temp values are in the configured format */
431 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
434 return sprintf(buf, "%d\n", out);
437 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
438 const char *buf, size_t count)
440 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
441 struct i2c_client *client = to_i2c_client(dev);
442 struct adt7475_data *data = i2c_get_clientdata(client);
443 unsigned char reg = 0;
448 if (kstrtol(buf, 10, &val))
451 mutex_lock(&data->lock);
453 /* We need the config register in all cases for temp <-> reg conv. */
454 data->config5 = adt7475_read(REG_CONFIG5);
458 if (data->config5 & CONFIG5_TEMPOFFSET) {
459 val = clamp_val(val, -63000, 127000);
460 out = data->temp[OFFSET][sattr->index] = val / 1000;
462 val = clamp_val(val, -63000, 64000);
463 out = data->temp[OFFSET][sattr->index] = val / 500;
469 * The value will be given as an absolute value, turn it
470 * into an offset based on THERM
473 /* Read fresh THERM and HYSTERSIS values from the chip */
474 data->temp[THERM][sattr->index] =
475 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
476 adt7475_read_hystersis(client);
478 temp = reg2temp(data, data->temp[THERM][sattr->index]);
479 val = clamp_val(val, temp - 15000, temp);
480 val = (temp - val) / 1000;
482 if (sattr->index != 1) {
483 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
484 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
486 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
487 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
490 out = data->temp[HYSTERSIS][sattr->index];
494 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
497 * We maintain an extra 2 digits of precision for simplicity
498 * - shift those back off before writing the value
500 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
505 reg = TEMP_MIN_REG(sattr->index);
508 reg = TEMP_MAX_REG(sattr->index);
511 reg = TEMP_OFFSET_REG(sattr->index);
514 reg = TEMP_TMIN_REG(sattr->index);
517 reg = TEMP_THERM_REG(sattr->index);
520 if (sattr->index != 2)
521 reg = REG_REMOTE1_HYSTERSIS;
523 reg = REG_REMOTE2_HYSTERSIS;
528 i2c_smbus_write_byte_data(client, reg, out);
530 mutex_unlock(&data->lock);
534 /* Assuming CONFIG6[SLOW] is 0 */
535 static const int ad7475_st_map[] = {
536 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
539 static ssize_t show_temp_st(struct device *dev, struct device_attribute *attr,
542 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
543 struct i2c_client *client = to_i2c_client(dev);
544 struct adt7475_data *data = i2c_get_clientdata(client);
547 switch (sattr->index) {
549 val = data->enh_acoustics[0] & 0xf;
552 val = (data->enh_acoustics[1] >> 4) & 0xf;
556 val = data->enh_acoustics[1] & 0xf;
561 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
563 return sprintf(buf, "0\n");
566 static ssize_t set_temp_st(struct device *dev, struct device_attribute *attr,
567 const char *buf, size_t count)
569 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
570 struct i2c_client *client = to_i2c_client(dev);
571 struct adt7475_data *data = i2c_get_clientdata(client);
576 if (kstrtoul(buf, 10, &val))
579 switch (sattr->index) {
581 reg = REG_ENHANCE_ACOUSTICS1;
586 reg = REG_ENHANCE_ACOUSTICS2;
592 reg = REG_ENHANCE_ACOUSTICS2;
599 val = find_closest_descending(val, ad7475_st_map,
600 ARRAY_SIZE(ad7475_st_map));
604 mutex_lock(&data->lock);
606 data->enh_acoustics[idx] &= ~(0xf << shift);
607 data->enh_acoustics[idx] |= (val << shift);
609 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
611 mutex_unlock(&data->lock);
617 * Table of autorange values - the user will write the value in millidegrees,
618 * and we'll convert it
620 static const int autorange_table[] = {
621 2000, 2500, 3330, 4000, 5000, 6670, 8000,
622 10000, 13330, 16000, 20000, 26670, 32000, 40000,
626 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
629 struct adt7475_data *data = adt7475_update_device(dev);
630 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
634 return PTR_ERR(data);
636 mutex_lock(&data->lock);
637 out = (data->range[sattr->index] >> 4) & 0x0F;
638 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
639 mutex_unlock(&data->lock);
641 return sprintf(buf, "%d\n", val + autorange_table[out]);
644 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
645 const char *buf, size_t count)
647 struct i2c_client *client = to_i2c_client(dev);
648 struct adt7475_data *data = i2c_get_clientdata(client);
649 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
653 if (kstrtol(buf, 10, &val))
656 mutex_lock(&data->lock);
658 /* Get a fresh copy of the needed registers */
659 data->config5 = adt7475_read(REG_CONFIG5);
660 data->temp[AUTOMIN][sattr->index] =
661 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
662 data->range[sattr->index] =
663 adt7475_read(TEMP_TRANGE_REG(sattr->index));
666 * The user will write an absolute value, so subtract the start point
667 * to figure the range
669 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
670 val = clamp_val(val, temp + autorange_table[0],
671 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
674 /* Find the nearest table entry to what the user wrote */
675 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
677 data->range[sattr->index] &= ~0xF0;
678 data->range[sattr->index] |= val << 4;
680 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
681 data->range[sattr->index]);
683 mutex_unlock(&data->lock);
687 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
690 struct adt7475_data *data = adt7475_update_device(dev);
691 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
695 return PTR_ERR(data);
697 if (sattr->nr == ALARM)
698 out = (data->alarms >> (sattr->index + 10)) & 1;
700 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
702 return sprintf(buf, "%d\n", out);
705 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
706 const char *buf, size_t count)
709 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
710 struct i2c_client *client = to_i2c_client(dev);
711 struct adt7475_data *data = i2c_get_clientdata(client);
714 if (kstrtoul(buf, 10, &val))
717 mutex_lock(&data->lock);
719 data->tach[MIN][sattr->index] = rpm2tach(val);
721 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
722 data->tach[MIN][sattr->index]);
724 mutex_unlock(&data->lock);
728 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
731 struct adt7475_data *data = adt7475_update_device(dev);
732 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
735 return PTR_ERR(data);
737 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
740 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
743 struct adt7475_data *data = adt7475_update_device(dev);
744 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
747 return PTR_ERR(data);
749 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
752 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
755 struct adt7475_data *data = adt7475_update_device(dev);
756 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
759 return PTR_ERR(data);
761 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
764 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
765 const char *buf, size_t count)
768 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
769 struct i2c_client *client = to_i2c_client(dev);
770 struct adt7475_data *data = i2c_get_clientdata(client);
771 unsigned char reg = 0;
774 if (kstrtol(buf, 10, &val))
777 mutex_lock(&data->lock);
781 /* Get a fresh value for CONTROL */
782 data->pwm[CONTROL][sattr->index] =
783 adt7475_read(PWM_CONFIG_REG(sattr->index));
786 * If we are not in manual mode, then we shouldn't allow
787 * the user to set the pwm speed
789 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
790 mutex_unlock(&data->lock);
794 reg = PWM_REG(sattr->index);
798 reg = PWM_MIN_REG(sattr->index);
802 reg = PWM_MAX_REG(sattr->index);
806 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
807 i2c_smbus_write_byte_data(client, reg,
808 data->pwm[sattr->nr][sattr->index]);
809 mutex_unlock(&data->lock);
814 static ssize_t show_stall_disable(struct device *dev,
815 struct device_attribute *attr, char *buf)
817 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
818 struct i2c_client *client = to_i2c_client(dev);
819 struct adt7475_data *data = i2c_get_clientdata(client);
820 u8 mask = BIT(5 + sattr->index);
822 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
825 static ssize_t set_stall_disable(struct device *dev,
826 struct device_attribute *attr, const char *buf,
829 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
830 struct i2c_client *client = to_i2c_client(dev);
831 struct adt7475_data *data = i2c_get_clientdata(client);
833 u8 mask = BIT(5 + sattr->index);
835 if (kstrtol(buf, 10, &val))
838 mutex_lock(&data->lock);
840 data->enh_acoustics[0] &= ~mask;
842 data->enh_acoustics[0] |= mask;
844 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
845 data->enh_acoustics[0]);
847 mutex_unlock(&data->lock);
852 /* Called by set_pwmctrl and set_pwmchan */
854 static int hw_set_pwm(struct i2c_client *client, int index,
855 unsigned int pwmctl, unsigned int pwmchan)
857 struct adt7475_data *data = i2c_get_clientdata(client);
862 val = 0x03; /* Run at full speed */
865 val = 0x07; /* Manual mode */
870 /* Remote1 controls PWM */
874 /* local controls PWM */
878 /* remote2 controls PWM */
882 /* local/remote2 control PWM */
886 /* All three control PWM */
897 data->pwmctl[index] = pwmctl;
898 data->pwmchan[index] = pwmchan;
900 data->pwm[CONTROL][index] &= ~0xE0;
901 data->pwm[CONTROL][index] |= (val & 7) << 5;
903 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
904 data->pwm[CONTROL][index]);
909 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
910 const char *buf, size_t count)
912 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
913 struct i2c_client *client = to_i2c_client(dev);
914 struct adt7475_data *data = i2c_get_clientdata(client);
918 if (kstrtol(buf, 10, &val))
921 mutex_lock(&data->lock);
922 /* Read Modify Write PWM values */
923 adt7475_read_pwm(client, sattr->index);
924 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
927 mutex_unlock(&data->lock);
932 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
933 const char *buf, size_t count)
935 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
936 struct i2c_client *client = to_i2c_client(dev);
937 struct adt7475_data *data = i2c_get_clientdata(client);
941 if (kstrtol(buf, 10, &val))
944 mutex_lock(&data->lock);
945 /* Read Modify Write PWM values */
946 adt7475_read_pwm(client, sattr->index);
947 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
950 mutex_unlock(&data->lock);
955 /* List of frequencies for the PWM */
956 static const int pwmfreq_table[] = {
957 11, 14, 22, 29, 35, 44, 58, 88, 22500
960 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
963 struct adt7475_data *data = adt7475_update_device(dev);
964 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
965 int i = clamp_val(data->range[sattr->index] & 0xf, 0,
966 ARRAY_SIZE(pwmfreq_table) - 1);
969 return PTR_ERR(data);
971 return sprintf(buf, "%d\n", pwmfreq_table[i]);
974 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
975 const char *buf, size_t count)
977 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
978 struct i2c_client *client = to_i2c_client(dev);
979 struct adt7475_data *data = i2c_get_clientdata(client);
983 if (kstrtol(buf, 10, &val))
986 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
988 mutex_lock(&data->lock);
990 data->range[sattr->index] =
991 adt7475_read(TEMP_TRANGE_REG(sattr->index));
992 data->range[sattr->index] &= ~0xf;
993 data->range[sattr->index] |= out;
995 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
996 data->range[sattr->index]);
998 mutex_unlock(&data->lock);
1002 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1003 struct device_attribute *devattr,
1006 struct adt7475_data *data = adt7475_update_device(dev);
1007 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1010 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1011 struct device_attribute *devattr,
1012 const char *buf, size_t count)
1014 struct i2c_client *client = to_i2c_client(dev);
1015 struct adt7475_data *data = i2c_get_clientdata(client);
1018 if (kstrtol(buf, 10, &val))
1020 if (val != 0 && val != 1)
1023 mutex_lock(&data->lock);
1024 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1026 data->config4 |= CONFIG4_MAXDUTY;
1028 data->config4 &= ~CONFIG4_MAXDUTY;
1029 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1030 mutex_unlock(&data->lock);
1035 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1038 struct adt7475_data *data = dev_get_drvdata(dev);
1039 return sprintf(buf, "%d\n", (int)data->vrm);
1042 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1043 const char *buf, size_t count)
1045 struct adt7475_data *data = dev_get_drvdata(dev);
1048 if (kstrtol(buf, 10, &val))
1050 if (val < 0 || val > 255)
1057 static ssize_t cpu0_vid_show(struct device *dev,
1058 struct device_attribute *devattr, char *buf)
1060 struct adt7475_data *data = adt7475_update_device(dev);
1063 return PTR_ERR(data);
1065 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1068 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
1069 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
1070 set_voltage, MAX, 0);
1071 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
1072 set_voltage, MIN, 0);
1073 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
1074 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1075 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
1076 set_voltage, MAX, 1);
1077 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
1078 set_voltage, MIN, 1);
1079 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
1080 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1081 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
1082 set_voltage, MAX, 2);
1083 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
1084 set_voltage, MIN, 2);
1085 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
1086 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
1087 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
1088 set_voltage, MAX, 3);
1089 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
1090 set_voltage, MIN, 3);
1091 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
1092 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
1093 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
1094 set_voltage, MAX, 4);
1095 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
1096 set_voltage, MIN, 4);
1097 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
1098 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
1099 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
1100 set_voltage, MAX, 5);
1101 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
1102 set_voltage, MIN, 5);
1103 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
1104 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
1105 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
1106 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
1107 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1109 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1111 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1112 set_temp, OFFSET, 0);
1113 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
1114 show_temp, set_temp, AUTOMIN, 0);
1115 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
1116 show_point2, set_point2, 0, 0);
1117 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1119 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1120 set_temp, HYSTERSIS, 0);
1121 static SENSOR_DEVICE_ATTR_2(temp1_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1123 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
1124 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
1125 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1127 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1129 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1130 set_temp, OFFSET, 1);
1131 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
1132 show_temp, set_temp, AUTOMIN, 1);
1133 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
1134 show_point2, set_point2, 0, 1);
1135 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1137 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1138 set_temp, HYSTERSIS, 1);
1139 static SENSOR_DEVICE_ATTR_2(temp2_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1141 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
1142 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
1143 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
1144 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1146 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1148 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1149 set_temp, OFFSET, 2);
1150 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1151 show_temp, set_temp, AUTOMIN, 2);
1152 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1153 show_point2, set_point2, 0, 2);
1154 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1156 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1157 set_temp, HYSTERSIS, 2);
1158 static SENSOR_DEVICE_ATTR_2(temp3_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1160 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1161 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1163 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1164 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1165 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1167 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1168 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1169 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1171 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1172 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1173 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1175 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1176 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1178 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1179 set_pwmfreq, INPUT, 0);
1180 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1181 set_pwmctrl, INPUT, 0);
1182 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1183 show_pwmchan, set_pwmchan, INPUT, 0);
1184 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1186 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1188 static SENSOR_DEVICE_ATTR_2(pwm1_stall_disable, S_IRUGO | S_IWUSR,
1189 show_stall_disable, set_stall_disable, 0, 0);
1190 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1192 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1193 set_pwmfreq, INPUT, 1);
1194 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1195 set_pwmctrl, INPUT, 1);
1196 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1197 show_pwmchan, set_pwmchan, INPUT, 1);
1198 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1200 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1202 static SENSOR_DEVICE_ATTR_2(pwm2_stall_disable, S_IRUGO | S_IWUSR,
1203 show_stall_disable, set_stall_disable, 0, 1);
1204 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1206 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1207 set_pwmfreq, INPUT, 2);
1208 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1209 set_pwmctrl, INPUT, 2);
1210 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1211 show_pwmchan, set_pwmchan, INPUT, 2);
1212 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1214 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1216 static SENSOR_DEVICE_ATTR_2(pwm3_stall_disable, S_IRUGO | S_IWUSR,
1217 show_stall_disable, set_stall_disable, 0, 2);
1219 /* Non-standard name, might need revisiting */
1220 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1222 static DEVICE_ATTR_RW(vrm);
1223 static DEVICE_ATTR_RO(cpu0_vid);
1225 static struct attribute *adt7475_attrs[] = {
1226 &sensor_dev_attr_in1_input.dev_attr.attr,
1227 &sensor_dev_attr_in1_max.dev_attr.attr,
1228 &sensor_dev_attr_in1_min.dev_attr.attr,
1229 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1230 &sensor_dev_attr_in2_input.dev_attr.attr,
1231 &sensor_dev_attr_in2_max.dev_attr.attr,
1232 &sensor_dev_attr_in2_min.dev_attr.attr,
1233 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1234 &sensor_dev_attr_temp1_input.dev_attr.attr,
1235 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1236 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1237 &sensor_dev_attr_temp1_max.dev_attr.attr,
1238 &sensor_dev_attr_temp1_min.dev_attr.attr,
1239 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1240 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1241 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1242 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1243 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1244 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1245 &sensor_dev_attr_temp2_input.dev_attr.attr,
1246 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1247 &sensor_dev_attr_temp2_max.dev_attr.attr,
1248 &sensor_dev_attr_temp2_min.dev_attr.attr,
1249 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1250 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1251 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1252 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1253 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1254 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1255 &sensor_dev_attr_temp3_input.dev_attr.attr,
1256 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1257 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1258 &sensor_dev_attr_temp3_max.dev_attr.attr,
1259 &sensor_dev_attr_temp3_min.dev_attr.attr,
1260 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1261 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1262 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1263 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1264 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1265 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1266 &sensor_dev_attr_fan1_input.dev_attr.attr,
1267 &sensor_dev_attr_fan1_min.dev_attr.attr,
1268 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1269 &sensor_dev_attr_fan2_input.dev_attr.attr,
1270 &sensor_dev_attr_fan2_min.dev_attr.attr,
1271 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1272 &sensor_dev_attr_fan3_input.dev_attr.attr,
1273 &sensor_dev_attr_fan3_min.dev_attr.attr,
1274 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1275 &sensor_dev_attr_pwm1.dev_attr.attr,
1276 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1277 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1278 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1279 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1280 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1281 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1282 &sensor_dev_attr_pwm3.dev_attr.attr,
1283 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1284 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1285 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1286 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1287 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1288 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1289 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1293 static struct attribute *fan4_attrs[] = {
1294 &sensor_dev_attr_fan4_input.dev_attr.attr,
1295 &sensor_dev_attr_fan4_min.dev_attr.attr,
1296 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1300 static struct attribute *pwm2_attrs[] = {
1301 &sensor_dev_attr_pwm2.dev_attr.attr,
1302 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1303 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1304 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1305 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1306 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1307 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1311 static struct attribute *in0_attrs[] = {
1312 &sensor_dev_attr_in0_input.dev_attr.attr,
1313 &sensor_dev_attr_in0_max.dev_attr.attr,
1314 &sensor_dev_attr_in0_min.dev_attr.attr,
1315 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1319 static struct attribute *in3_attrs[] = {
1320 &sensor_dev_attr_in3_input.dev_attr.attr,
1321 &sensor_dev_attr_in3_max.dev_attr.attr,
1322 &sensor_dev_attr_in3_min.dev_attr.attr,
1323 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1327 static struct attribute *in4_attrs[] = {
1328 &sensor_dev_attr_in4_input.dev_attr.attr,
1329 &sensor_dev_attr_in4_max.dev_attr.attr,
1330 &sensor_dev_attr_in4_min.dev_attr.attr,
1331 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1335 static struct attribute *in5_attrs[] = {
1336 &sensor_dev_attr_in5_input.dev_attr.attr,
1337 &sensor_dev_attr_in5_max.dev_attr.attr,
1338 &sensor_dev_attr_in5_min.dev_attr.attr,
1339 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1343 static struct attribute *vid_attrs[] = {
1344 &dev_attr_cpu0_vid.attr,
1349 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1350 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1351 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1352 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1353 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1354 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1355 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1356 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1358 static int adt7475_detect(struct i2c_client *client,
1359 struct i2c_board_info *info)
1361 struct i2c_adapter *adapter = client->adapter;
1362 int vendid, devid, devid2;
1365 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1368 vendid = adt7475_read(REG_VENDID);
1369 devid2 = adt7475_read(REG_DEVID2);
1370 if (vendid != 0x41 || /* Analog Devices */
1371 (devid2 & 0xf8) != 0x68)
1374 devid = adt7475_read(REG_DEVID);
1377 else if (devid == 0x75 && client->addr == 0x2e)
1379 else if (devid == 0x76)
1381 else if ((devid2 & 0xfc) == 0x6c)
1384 dev_dbg(&adapter->dev,
1385 "Couldn't detect an ADT7473/75/76/90 part at "
1386 "0x%02x\n", (unsigned int)client->addr);
1390 strlcpy(info->type, name, I2C_NAME_SIZE);
1395 static void adt7475_remove_files(struct i2c_client *client,
1396 struct adt7475_data *data)
1398 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1400 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1402 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1403 if (data->has_voltage & (1 << 0))
1404 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1405 if (data->has_voltage & (1 << 3))
1406 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1407 if (data->has_voltage & (1 << 4))
1408 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1409 if (data->has_voltage & (1 << 5))
1410 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1412 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1415 static int adt7475_update_limits(struct i2c_client *client)
1417 struct adt7475_data *data = i2c_get_clientdata(client);
1421 ret = adt7475_read(REG_CONFIG4);
1424 data->config4 = ret;
1426 ret = adt7475_read(REG_CONFIG5);
1429 data->config5 = ret;
1431 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1432 if (!(data->has_voltage & (1 << i)))
1434 /* Adjust values so they match the input precision */
1435 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1438 data->voltage[MIN][i] = ret << 2;
1440 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1443 data->voltage[MAX][i] = ret << 2;
1446 if (data->has_voltage & (1 << 5)) {
1447 ret = adt7475_read(REG_VTT_MIN);
1450 data->voltage[MIN][5] = ret << 2;
1452 ret = adt7475_read(REG_VTT_MAX);
1455 data->voltage[MAX][5] = ret << 2;
1458 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1459 /* Adjust values so they match the input precision */
1460 ret = adt7475_read(TEMP_MIN_REG(i));
1463 data->temp[MIN][i] = ret << 2;
1465 ret = adt7475_read(TEMP_MAX_REG(i));
1468 data->temp[MAX][i] = ret << 2;
1470 ret = adt7475_read(TEMP_TMIN_REG(i));
1473 data->temp[AUTOMIN][i] = ret << 2;
1475 ret = adt7475_read(TEMP_THERM_REG(i));
1478 data->temp[THERM][i] = ret << 2;
1480 ret = adt7475_read(TEMP_OFFSET_REG(i));
1483 data->temp[OFFSET][i] = ret;
1485 adt7475_read_hystersis(client);
1487 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1488 if (i == 3 && !data->has_fan4)
1490 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1493 data->tach[MIN][i] = ret;
1496 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1497 if (i == 1 && !data->has_pwm2)
1499 ret = adt7475_read(PWM_MAX_REG(i));
1502 data->pwm[MAX][i] = ret;
1504 ret = adt7475_read(PWM_MIN_REG(i));
1507 data->pwm[MIN][i] = ret;
1508 /* Set the channel and control information */
1509 adt7475_read_pwm(client, i);
1512 ret = adt7475_read(TEMP_TRANGE_REG(0));
1515 data->range[0] = ret;
1517 ret = adt7475_read(TEMP_TRANGE_REG(1));
1520 data->range[1] = ret;
1522 ret = adt7475_read(TEMP_TRANGE_REG(2));
1525 data->range[2] = ret;
1530 static int adt7475_probe(struct i2c_client *client,
1531 const struct i2c_device_id *id)
1534 static const char * const names[] = {
1535 [adt7473] = "ADT7473",
1536 [adt7475] = "ADT7475",
1537 [adt7476] = "ADT7476",
1538 [adt7490] = "ADT7490",
1541 struct adt7475_data *data;
1542 int i, ret = 0, revision;
1543 u8 config2, config3;
1545 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1549 mutex_init(&data->lock);
1550 i2c_set_clientdata(client, data);
1552 if (client->dev.of_node)
1553 chip = (enum chips)of_device_get_match_data(&client->dev);
1555 chip = id->driver_data;
1557 /* Initialize device-specific values */
1560 data->has_voltage = 0x0e; /* in1 to in3 */
1561 revision = adt7475_read(REG_DEVID2) & 0x07;
1564 data->has_voltage = 0x3e; /* in1 to in5 */
1565 revision = adt7475_read(REG_DEVID2) & 0x03;
1566 if (revision == 0x03)
1567 revision += adt7475_read(REG_DEVREV2);
1570 data->has_voltage = 0x06; /* in1, in2 */
1571 revision = adt7475_read(REG_DEVID2) & 0x07;
1574 config3 = adt7475_read(REG_CONFIG3);
1575 /* Pin PWM2 may alternatively be used for ALERT output */
1576 if (!(config3 & CONFIG3_SMBALERT))
1578 /* Meaning of this bit is inverted for the ADT7473-1 */
1579 if (id->driver_data == adt7473 && revision >= 1)
1580 data->has_pwm2 = !data->has_pwm2;
1582 data->config4 = adt7475_read(REG_CONFIG4);
1583 /* Pin TACH4 may alternatively be used for THERM */
1584 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1588 * THERM configuration is more complex on the ADT7476 and ADT7490,
1589 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1592 if (id->driver_data == adt7490) {
1593 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1594 !(config3 & CONFIG3_THERM))
1597 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1598 if (!(config3 & CONFIG3_THERM) ||
1599 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1600 data->has_voltage |= (1 << 0); /* in0 */
1604 * On the ADT7476, the +12V input pin may instead be used as VID5,
1605 * and VID pins may alternatively be used as GPIO
1607 if (id->driver_data == adt7476) {
1608 u8 vid = adt7475_read(REG_VID);
1609 if (!(vid & VID_VIDSEL))
1610 data->has_voltage |= (1 << 4); /* in4 */
1612 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1615 /* Voltage attenuators can be bypassed, globally or individually */
1616 config2 = adt7475_read(REG_CONFIG2);
1617 if (config2 & CONFIG2_ATTN) {
1618 data->bypass_attn = (0x3 << 3) | 0x3;
1620 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1621 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1623 data->bypass_attn &= data->has_voltage;
1626 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1627 * pwm's which are disabled to manual mode with 0% duty cycle
1629 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1630 adt7475_read_pwm(client, i);
1632 /* Start monitoring */
1636 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1637 adt7475_read(REG_CONFIG1) | 0x01);
1643 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1647 /* Features that can be disabled individually */
1648 if (data->has_fan4) {
1649 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1653 if (data->has_pwm2) {
1654 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1658 if (data->has_voltage & (1 << 0)) {
1659 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1663 if (data->has_voltage & (1 << 3)) {
1664 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1668 if (data->has_voltage & (1 << 4)) {
1669 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1673 if (data->has_voltage & (1 << 5)) {
1674 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1678 if (data->has_vid) {
1679 data->vrm = vid_which_vrm();
1680 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1685 data->hwmon_dev = hwmon_device_register(&client->dev);
1686 if (IS_ERR(data->hwmon_dev)) {
1687 ret = PTR_ERR(data->hwmon_dev);
1691 dev_info(&client->dev, "%s device, revision %d\n",
1692 names[id->driver_data], revision);
1693 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1694 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1695 (data->has_voltage & (1 << 0)) ? " in0" : "",
1696 (data->has_voltage & (1 << 4)) ? " in4" : "",
1697 data->has_fan4 ? " fan4" : "",
1698 data->has_pwm2 ? " pwm2" : "",
1699 data->has_vid ? " vid" : "");
1700 if (data->bypass_attn)
1701 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1702 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1703 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1704 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1705 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1707 /* Limits and settings, should never change update more than once */
1708 ret = adt7475_update_limits(client);
1715 adt7475_remove_files(client, data);
1719 static int adt7475_remove(struct i2c_client *client)
1721 struct adt7475_data *data = i2c_get_clientdata(client);
1723 hwmon_device_unregister(data->hwmon_dev);
1724 adt7475_remove_files(client, data);
1729 static struct i2c_driver adt7475_driver = {
1730 .class = I2C_CLASS_HWMON,
1733 .of_match_table = of_match_ptr(adt7475_of_match),
1735 .probe = adt7475_probe,
1736 .remove = adt7475_remove,
1737 .id_table = adt7475_id,
1738 .detect = adt7475_detect,
1739 .address_list = normal_i2c,
1742 static void adt7475_read_hystersis(struct i2c_client *client)
1744 struct adt7475_data *data = i2c_get_clientdata(client);
1746 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1747 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1748 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1751 static void adt7475_read_pwm(struct i2c_client *client, int index)
1753 struct adt7475_data *data = i2c_get_clientdata(client);
1756 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1759 * Figure out the internal value for pwmctrl and pwmchan
1760 * based on the current settings
1762 v = (data->pwm[CONTROL][index] >> 5) & 7;
1765 data->pwmctl[index] = 0;
1767 data->pwmctl[index] = 1;
1770 * The fan is disabled - we don't want to
1771 * support that, so change to manual mode and
1772 * set the duty cycle to 0 instead
1774 data->pwm[INPUT][index] = 0;
1775 data->pwm[CONTROL][index] &= ~0xE0;
1776 data->pwm[CONTROL][index] |= (7 << 5);
1778 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1779 data->pwm[INPUT][index]);
1781 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1782 data->pwm[CONTROL][index]);
1784 data->pwmctl[index] = 1;
1786 data->pwmctl[index] = 2;
1790 data->pwmchan[index] = 1;
1793 data->pwmchan[index] = 2;
1796 data->pwmchan[index] = 4;
1799 data->pwmchan[index] = 6;
1802 data->pwmchan[index] = 7;
1808 static int adt7475_update_measure(struct device *dev)
1810 struct i2c_client *client = to_i2c_client(dev);
1811 struct adt7475_data *data = i2c_get_clientdata(client);
1816 ret = adt7475_read(REG_STATUS2);
1819 data->alarms = ret << 8;
1821 ret = adt7475_read(REG_STATUS1);
1824 data->alarms |= ret;
1826 ret = adt7475_read(REG_EXTEND2);
1832 ret = adt7475_read(REG_EXTEND1);
1838 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1839 if (!(data->has_voltage & (1 << i)))
1841 ret = adt7475_read(VOLTAGE_REG(i));
1844 data->voltage[INPUT][i] =
1846 ((ext >> (i * 2)) & 3);
1849 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1850 ret = adt7475_read(TEMP_REG(i));
1853 data->temp[INPUT][i] =
1855 ((ext >> ((i + 5) * 2)) & 3);
1858 if (data->has_voltage & (1 << 5)) {
1859 ret = adt7475_read(REG_STATUS4);
1862 data->alarms |= ret << 24;
1864 ret = adt7475_read(REG_EXTEND3);
1869 ret = adt7475_read(REG_VTT);
1872 data->voltage[INPUT][5] = ret << 2 |
1876 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1877 if (i == 3 && !data->has_fan4)
1879 ret = adt7475_read_word(client, TACH_REG(i));
1882 data->tach[INPUT][i] = ret;
1885 /* Updated by hw when in auto mode */
1886 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1887 if (i == 1 && !data->has_pwm2)
1889 ret = adt7475_read(PWM_REG(i));
1892 data->pwm[INPUT][i] = ret;
1895 if (data->has_vid) {
1896 ret = adt7475_read(REG_VID);
1899 data->vid = ret & 0x3f;
1905 static struct adt7475_data *adt7475_update_device(struct device *dev)
1907 struct i2c_client *client = to_i2c_client(dev);
1908 struct adt7475_data *data = i2c_get_clientdata(client);
1911 mutex_lock(&data->lock);
1913 /* Measurement values update every 2 seconds */
1914 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1916 ret = adt7475_update_measure(dev);
1918 data->valid = false;
1919 mutex_unlock(&data->lock);
1920 return ERR_PTR(ret);
1922 data->measure_updated = jiffies;
1926 mutex_unlock(&data->lock);
1931 module_i2c_driver(adt7475_driver);
1933 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1934 MODULE_DESCRIPTION("adt7475 driver");
1935 MODULE_LICENSE("GPL");