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>
22 #include <linux/util_macros.h>
24 /* Indexes for the sysfs hooks */
36 * These are unique identifiers for the sysfs functions - unlike the
37 * numbers above, these are not also indexes into an array
43 /* 7475 Common Registers */
45 #define REG_DEVREV2 0x12 /* ADT7490 only */
47 #define REG_VTT 0x1E /* ADT7490 only */
48 #define REG_EXTEND3 0x1F /* ADT7490 only */
50 #define REG_VOLTAGE_BASE 0x20
51 #define REG_TEMP_BASE 0x25
52 #define REG_TACH_BASE 0x28
53 #define REG_PWM_BASE 0x30
54 #define REG_PWM_MAX_BASE 0x38
56 #define REG_DEVID 0x3D
57 #define REG_VENDID 0x3E
58 #define REG_DEVID2 0x3F
60 #define REG_CONFIG1 0x40
62 #define REG_STATUS1 0x41
63 #define REG_STATUS2 0x42
65 #define REG_VID 0x43 /* ADT7476 only */
67 #define REG_VOLTAGE_MIN_BASE 0x44
68 #define REG_VOLTAGE_MAX_BASE 0x45
70 #define REG_TEMP_MIN_BASE 0x4E
71 #define REG_TEMP_MAX_BASE 0x4F
73 #define REG_TACH_MIN_BASE 0x54
75 #define REG_PWM_CONFIG_BASE 0x5C
77 #define REG_TEMP_TRANGE_BASE 0x5F
79 #define REG_ENHANCE_ACOUSTICS1 0x62
80 #define REG_ENHANCE_ACOUSTICS2 0x63
82 #define REG_PWM_MIN_BASE 0x64
84 #define REG_TEMP_TMIN_BASE 0x67
85 #define REG_TEMP_THERM_BASE 0x6A
87 #define REG_REMOTE1_HYSTERSIS 0x6D
88 #define REG_REMOTE2_HYSTERSIS 0x6E
90 #define REG_TEMP_OFFSET_BASE 0x70
92 #define REG_CONFIG2 0x73
94 #define REG_EXTEND1 0x76
95 #define REG_EXTEND2 0x77
97 #define REG_CONFIG3 0x78
98 #define REG_CONFIG5 0x7C
99 #define REG_CONFIG4 0x7D
101 #define REG_STATUS4 0x81 /* ADT7490 only */
103 #define REG_VTT_MIN 0x84 /* ADT7490 only */
104 #define REG_VTT_MAX 0x86 /* ADT7490 only */
106 #define VID_VIDSEL 0x80 /* ADT7476 only */
108 #define CONFIG2_ATTN 0x20
110 #define CONFIG3_SMBALERT 0x01
111 #define CONFIG3_THERM 0x02
113 #define CONFIG4_PINFUNC 0x03
114 #define CONFIG4_MAXDUTY 0x08
115 #define CONFIG4_ATTN_IN10 0x30
116 #define CONFIG4_ATTN_IN43 0xC0
118 #define CONFIG5_TWOSCOMP 0x01
119 #define CONFIG5_TEMPOFFSET 0x02
120 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
122 /* ADT7475 Settings */
124 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
125 #define ADT7475_TEMP_COUNT 3
126 #define ADT7475_TACH_COUNT 4
127 #define ADT7475_PWM_COUNT 3
129 /* Macro to read the registers */
131 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
133 /* Macros to easily index the registers */
135 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
136 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
138 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
139 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
140 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
141 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
143 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
144 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
145 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
147 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
148 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
149 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
150 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
151 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
152 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
153 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
155 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
157 enum chips { adt7473, adt7475, adt7476, adt7490 };
159 static const struct i2c_device_id adt7475_id[] = {
160 { "adt7473", adt7473 },
161 { "adt7475", adt7475 },
162 { "adt7476", adt7476 },
163 { "adt7490", adt7490 },
166 MODULE_DEVICE_TABLE(i2c, adt7475_id);
168 static const struct of_device_id __maybe_unused adt7475_of_match[] = {
170 .compatible = "adi,adt7473",
171 .data = (void *)adt7473
174 .compatible = "adi,adt7475",
175 .data = (void *)adt7475
178 .compatible = "adi,adt7476",
179 .data = (void *)adt7476
182 .compatible = "adi,adt7490",
183 .data = (void *)adt7490
187 MODULE_DEVICE_TABLE(of, adt7475_of_match);
189 struct adt7475_data {
190 struct device *hwmon_dev;
193 unsigned long measure_updated;
199 u8 bypass_attn; /* Bypass voltage attenuator */
217 static struct i2c_driver adt7475_driver;
218 static struct adt7475_data *adt7475_update_device(struct device *dev);
219 static void adt7475_read_hystersis(struct i2c_client *client);
220 static void adt7475_read_pwm(struct i2c_client *client, int index);
222 /* Given a temp value, convert it to register value */
224 static inline u16 temp2reg(struct adt7475_data *data, long val)
228 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
229 val = clamp_val(val, -64000, 191000);
230 ret = (val + 64500) / 1000;
232 val = clamp_val(val, -128000, 127000);
234 ret = (256500 + val) / 1000;
236 ret = (val + 500) / 1000;
242 /* Given a register value, convert it to a real temp value */
244 static inline int reg2temp(struct adt7475_data *data, u16 reg)
246 if (data->config5 & CONFIG5_TWOSCOMP) {
248 return (reg - 1024) * 250;
252 return (reg - 256) * 250;
255 static inline int tach2rpm(u16 tach)
257 if (tach == 0 || tach == 0xFFFF)
260 return (90000 * 60) / tach;
263 static inline u16 rpm2tach(unsigned long rpm)
268 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
271 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
272 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
273 { 45, 94 }, /* +2.5V */
274 { 175, 525 }, /* Vccp */
275 { 68, 71 }, /* Vcc */
276 { 93, 47 }, /* +5V */
277 { 120, 20 }, /* +12V */
278 { 45, 45 }, /* Vtt */
281 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
283 const int *r = adt7473_in_scaling[channel];
285 if (bypass_attn & (1 << channel))
286 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
287 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
290 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
292 const int *r = adt7473_in_scaling[channel];
295 if (bypass_attn & (1 << channel))
296 reg = (volt * 1024) / 2250;
298 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
299 return clamp_val(reg, 0, 1023) & (0xff << 2);
302 static int adt7475_read_word(struct i2c_client *client, int reg)
306 val1 = i2c_smbus_read_byte_data(client, reg);
309 val2 = i2c_smbus_read_byte_data(client, reg + 1);
313 return val1 | (val2 << 8);
316 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
318 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
319 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
322 static ssize_t voltage_show(struct device *dev, struct device_attribute *attr,
325 struct adt7475_data *data = adt7475_update_device(dev);
326 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
330 return PTR_ERR(data);
334 return sprintf(buf, "%d\n",
335 (data->alarms >> sattr->index) & 1);
337 val = data->voltage[sattr->nr][sattr->index];
338 return sprintf(buf, "%d\n",
339 reg2volt(sattr->index, val, data->bypass_attn));
343 static ssize_t voltage_store(struct device *dev,
344 struct device_attribute *attr, const char *buf,
348 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
349 struct i2c_client *client = to_i2c_client(dev);
350 struct adt7475_data *data = i2c_get_clientdata(client);
354 if (kstrtol(buf, 10, &val))
357 mutex_lock(&data->lock);
359 data->voltage[sattr->nr][sattr->index] =
360 volt2reg(sattr->index, val, data->bypass_attn);
362 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
363 if (sattr->nr == MIN)
364 reg = VOLTAGE_MIN_REG(sattr->index);
366 reg = VOLTAGE_MAX_REG(sattr->index);
368 if (sattr->nr == MIN)
374 i2c_smbus_write_byte_data(client, reg,
375 data->voltage[sattr->nr][sattr->index] >> 2);
376 mutex_unlock(&data->lock);
381 static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
384 struct adt7475_data *data = adt7475_update_device(dev);
385 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
389 return PTR_ERR(data);
393 mutex_lock(&data->lock);
394 out = data->temp[sattr->nr][sattr->index];
395 if (sattr->index != 1)
396 out = (out >> 4) & 0xF;
400 * Show the value as an absolute number tied to
403 out = reg2temp(data, data->temp[THERM][sattr->index]) -
405 mutex_unlock(&data->lock);
410 * Offset is always 2's complement, regardless of the
413 mutex_lock(&data->lock);
414 out = (s8)data->temp[sattr->nr][sattr->index];
415 if (data->config5 & CONFIG5_TEMPOFFSET)
419 mutex_unlock(&data->lock);
423 out = (data->alarms >> (sattr->index + 4)) & 1;
427 /* Note - only for remote1 and remote2 */
428 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
432 /* All other temp values are in the configured format */
433 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
436 return sprintf(buf, "%d\n", out);
439 static ssize_t temp_store(struct device *dev, struct device_attribute *attr,
440 const char *buf, size_t count)
442 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
443 struct i2c_client *client = to_i2c_client(dev);
444 struct adt7475_data *data = i2c_get_clientdata(client);
445 unsigned char reg = 0;
450 if (kstrtol(buf, 10, &val))
453 mutex_lock(&data->lock);
455 /* We need the config register in all cases for temp <-> reg conv. */
456 data->config5 = adt7475_read(REG_CONFIG5);
460 if (data->config5 & CONFIG5_TEMPOFFSET) {
461 val = clamp_val(val, -63000, 127000);
462 out = data->temp[OFFSET][sattr->index] = val / 1000;
464 val = clamp_val(val, -63000, 64000);
465 out = data->temp[OFFSET][sattr->index] = val / 500;
471 * The value will be given as an absolute value, turn it
472 * into an offset based on THERM
475 /* Read fresh THERM and HYSTERSIS values from the chip */
476 data->temp[THERM][sattr->index] =
477 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
478 adt7475_read_hystersis(client);
480 temp = reg2temp(data, data->temp[THERM][sattr->index]);
481 val = clamp_val(val, temp - 15000, temp);
482 val = (temp - val) / 1000;
484 if (sattr->index != 1) {
485 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
486 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
488 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
489 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
492 out = data->temp[HYSTERSIS][sattr->index];
496 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
499 * We maintain an extra 2 digits of precision for simplicity
500 * - shift those back off before writing the value
502 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
507 reg = TEMP_MIN_REG(sattr->index);
510 reg = TEMP_MAX_REG(sattr->index);
513 reg = TEMP_OFFSET_REG(sattr->index);
516 reg = TEMP_TMIN_REG(sattr->index);
519 reg = TEMP_THERM_REG(sattr->index);
522 if (sattr->index != 2)
523 reg = REG_REMOTE1_HYSTERSIS;
525 reg = REG_REMOTE2_HYSTERSIS;
530 i2c_smbus_write_byte_data(client, reg, out);
532 mutex_unlock(&data->lock);
536 /* Assuming CONFIG6[SLOW] is 0 */
537 static const int ad7475_st_map[] = {
538 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
541 static ssize_t temp_st_show(struct device *dev, struct device_attribute *attr,
544 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
545 struct i2c_client *client = to_i2c_client(dev);
546 struct adt7475_data *data = i2c_get_clientdata(client);
549 switch (sattr->index) {
551 val = data->enh_acoustics[0] & 0xf;
554 val = (data->enh_acoustics[1] >> 4) & 0xf;
558 val = data->enh_acoustics[1] & 0xf;
563 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
565 return sprintf(buf, "0\n");
568 static ssize_t temp_st_store(struct device *dev,
569 struct device_attribute *attr, const char *buf,
572 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
573 struct i2c_client *client = to_i2c_client(dev);
574 struct adt7475_data *data = i2c_get_clientdata(client);
579 if (kstrtoul(buf, 10, &val))
582 switch (sattr->index) {
584 reg = REG_ENHANCE_ACOUSTICS1;
589 reg = REG_ENHANCE_ACOUSTICS2;
595 reg = REG_ENHANCE_ACOUSTICS2;
602 val = find_closest_descending(val, ad7475_st_map,
603 ARRAY_SIZE(ad7475_st_map));
607 mutex_lock(&data->lock);
609 data->enh_acoustics[idx] &= ~(0xf << shift);
610 data->enh_acoustics[idx] |= (val << shift);
612 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
614 mutex_unlock(&data->lock);
620 * Table of autorange values - the user will write the value in millidegrees,
621 * and we'll convert it
623 static const int autorange_table[] = {
624 2000, 2500, 3330, 4000, 5000, 6670, 8000,
625 10000, 13330, 16000, 20000, 26670, 32000, 40000,
629 static ssize_t point2_show(struct device *dev, struct device_attribute *attr,
632 struct adt7475_data *data = adt7475_update_device(dev);
633 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
637 return PTR_ERR(data);
639 mutex_lock(&data->lock);
640 out = (data->range[sattr->index] >> 4) & 0x0F;
641 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
642 mutex_unlock(&data->lock);
644 return sprintf(buf, "%d\n", val + autorange_table[out]);
647 static ssize_t point2_store(struct device *dev, struct device_attribute *attr,
648 const char *buf, size_t count)
650 struct i2c_client *client = to_i2c_client(dev);
651 struct adt7475_data *data = i2c_get_clientdata(client);
652 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
656 if (kstrtol(buf, 10, &val))
659 mutex_lock(&data->lock);
661 /* Get a fresh copy of the needed registers */
662 data->config5 = adt7475_read(REG_CONFIG5);
663 data->temp[AUTOMIN][sattr->index] =
664 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
665 data->range[sattr->index] =
666 adt7475_read(TEMP_TRANGE_REG(sattr->index));
669 * The user will write an absolute value, so subtract the start point
670 * to figure the range
672 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
673 val = clamp_val(val, temp + autorange_table[0],
674 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
677 /* Find the nearest table entry to what the user wrote */
678 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
680 data->range[sattr->index] &= ~0xF0;
681 data->range[sattr->index] |= val << 4;
683 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
684 data->range[sattr->index]);
686 mutex_unlock(&data->lock);
690 static ssize_t tach_show(struct device *dev, struct device_attribute *attr,
693 struct adt7475_data *data = adt7475_update_device(dev);
694 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
698 return PTR_ERR(data);
700 if (sattr->nr == ALARM)
701 out = (data->alarms >> (sattr->index + 10)) & 1;
703 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
705 return sprintf(buf, "%d\n", out);
708 static ssize_t tach_store(struct device *dev, struct device_attribute *attr,
709 const char *buf, size_t count)
712 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
713 struct i2c_client *client = to_i2c_client(dev);
714 struct adt7475_data *data = i2c_get_clientdata(client);
717 if (kstrtoul(buf, 10, &val))
720 mutex_lock(&data->lock);
722 data->tach[MIN][sattr->index] = rpm2tach(val);
724 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
725 data->tach[MIN][sattr->index]);
727 mutex_unlock(&data->lock);
731 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
734 struct adt7475_data *data = adt7475_update_device(dev);
735 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
738 return PTR_ERR(data);
740 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
743 static ssize_t pwmchan_show(struct device *dev, struct device_attribute *attr,
746 struct adt7475_data *data = adt7475_update_device(dev);
747 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
750 return PTR_ERR(data);
752 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
755 static ssize_t pwmctrl_show(struct device *dev, struct device_attribute *attr,
758 struct adt7475_data *data = adt7475_update_device(dev);
759 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
762 return PTR_ERR(data);
764 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
767 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
768 const char *buf, size_t count)
771 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
772 struct i2c_client *client = to_i2c_client(dev);
773 struct adt7475_data *data = i2c_get_clientdata(client);
774 unsigned char reg = 0;
777 if (kstrtol(buf, 10, &val))
780 mutex_lock(&data->lock);
784 /* Get a fresh value for CONTROL */
785 data->pwm[CONTROL][sattr->index] =
786 adt7475_read(PWM_CONFIG_REG(sattr->index));
789 * If we are not in manual mode, then we shouldn't allow
790 * the user to set the pwm speed
792 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
793 mutex_unlock(&data->lock);
797 reg = PWM_REG(sattr->index);
801 reg = PWM_MIN_REG(sattr->index);
805 reg = PWM_MAX_REG(sattr->index);
809 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
810 i2c_smbus_write_byte_data(client, reg,
811 data->pwm[sattr->nr][sattr->index]);
812 mutex_unlock(&data->lock);
817 static ssize_t stall_disable_show(struct device *dev,
818 struct device_attribute *attr, char *buf)
820 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
821 struct i2c_client *client = to_i2c_client(dev);
822 struct adt7475_data *data = i2c_get_clientdata(client);
823 u8 mask = BIT(5 + sattr->index);
825 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
828 static ssize_t stall_disable_store(struct device *dev,
829 struct device_attribute *attr,
830 const char *buf, size_t count)
832 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
833 struct i2c_client *client = to_i2c_client(dev);
834 struct adt7475_data *data = i2c_get_clientdata(client);
836 u8 mask = BIT(5 + sattr->index);
838 if (kstrtol(buf, 10, &val))
841 mutex_lock(&data->lock);
843 data->enh_acoustics[0] &= ~mask;
845 data->enh_acoustics[0] |= mask;
847 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
848 data->enh_acoustics[0]);
850 mutex_unlock(&data->lock);
855 /* Called by set_pwmctrl and set_pwmchan */
857 static int hw_set_pwm(struct i2c_client *client, int index,
858 unsigned int pwmctl, unsigned int pwmchan)
860 struct adt7475_data *data = i2c_get_clientdata(client);
865 val = 0x03; /* Run at full speed */
868 val = 0x07; /* Manual mode */
873 /* Remote1 controls PWM */
877 /* local controls PWM */
881 /* remote2 controls PWM */
885 /* local/remote2 control PWM */
889 /* All three control PWM */
900 data->pwmctl[index] = pwmctl;
901 data->pwmchan[index] = pwmchan;
903 data->pwm[CONTROL][index] &= ~0xE0;
904 data->pwm[CONTROL][index] |= (val & 7) << 5;
906 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
907 data->pwm[CONTROL][index]);
912 static ssize_t pwmchan_store(struct device *dev,
913 struct device_attribute *attr, const char *buf,
916 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
917 struct i2c_client *client = to_i2c_client(dev);
918 struct adt7475_data *data = i2c_get_clientdata(client);
922 if (kstrtol(buf, 10, &val))
925 mutex_lock(&data->lock);
926 /* Read Modify Write PWM values */
927 adt7475_read_pwm(client, sattr->index);
928 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
931 mutex_unlock(&data->lock);
936 static ssize_t pwmctrl_store(struct device *dev,
937 struct device_attribute *attr, const char *buf,
940 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
941 struct i2c_client *client = to_i2c_client(dev);
942 struct adt7475_data *data = i2c_get_clientdata(client);
946 if (kstrtol(buf, 10, &val))
949 mutex_lock(&data->lock);
950 /* Read Modify Write PWM values */
951 adt7475_read_pwm(client, sattr->index);
952 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
955 mutex_unlock(&data->lock);
960 /* List of frequencies for the PWM */
961 static const int pwmfreq_table[] = {
962 11, 14, 22, 29, 35, 44, 58, 88, 22500
965 static ssize_t pwmfreq_show(struct device *dev, struct device_attribute *attr,
968 struct adt7475_data *data = adt7475_update_device(dev);
969 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
973 return PTR_ERR(data);
974 idx = clamp_val(data->range[sattr->index] & 0xf, 0,
975 ARRAY_SIZE(pwmfreq_table) - 1);
977 return sprintf(buf, "%d\n", pwmfreq_table[idx]);
980 static ssize_t pwmfreq_store(struct device *dev,
981 struct device_attribute *attr, const char *buf,
984 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
985 struct i2c_client *client = to_i2c_client(dev);
986 struct adt7475_data *data = i2c_get_clientdata(client);
990 if (kstrtol(buf, 10, &val))
993 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
995 mutex_lock(&data->lock);
997 data->range[sattr->index] =
998 adt7475_read(TEMP_TRANGE_REG(sattr->index));
999 data->range[sattr->index] &= ~0xf;
1000 data->range[sattr->index] |= out;
1002 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
1003 data->range[sattr->index]);
1005 mutex_unlock(&data->lock);
1009 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
1010 struct device_attribute *devattr,
1013 struct adt7475_data *data = adt7475_update_device(dev);
1016 return PTR_ERR(data);
1018 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
1021 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
1022 struct device_attribute *devattr,
1023 const char *buf, size_t count)
1025 struct i2c_client *client = to_i2c_client(dev);
1026 struct adt7475_data *data = i2c_get_clientdata(client);
1029 if (kstrtol(buf, 10, &val))
1031 if (val != 0 && val != 1)
1034 mutex_lock(&data->lock);
1035 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1037 data->config4 |= CONFIG4_MAXDUTY;
1039 data->config4 &= ~CONFIG4_MAXDUTY;
1040 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1041 mutex_unlock(&data->lock);
1046 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1049 struct adt7475_data *data = dev_get_drvdata(dev);
1050 return sprintf(buf, "%d\n", (int)data->vrm);
1053 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1054 const char *buf, size_t count)
1056 struct adt7475_data *data = dev_get_drvdata(dev);
1059 if (kstrtol(buf, 10, &val))
1061 if (val < 0 || val > 255)
1068 static ssize_t cpu0_vid_show(struct device *dev,
1069 struct device_attribute *devattr, char *buf)
1071 struct adt7475_data *data = adt7475_update_device(dev);
1074 return PTR_ERR(data);
1076 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1079 static SENSOR_DEVICE_ATTR_2_RO(in0_input, voltage, INPUT, 0);
1080 static SENSOR_DEVICE_ATTR_2_RW(in0_max, voltage, MAX, 0);
1081 static SENSOR_DEVICE_ATTR_2_RW(in0_min, voltage, MIN, 0);
1082 static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, voltage, ALARM, 0);
1083 static SENSOR_DEVICE_ATTR_2_RO(in1_input, voltage, INPUT, 1);
1084 static SENSOR_DEVICE_ATTR_2_RW(in1_max, voltage, MAX, 1);
1085 static SENSOR_DEVICE_ATTR_2_RW(in1_min, voltage, MIN, 1);
1086 static SENSOR_DEVICE_ATTR_2_RO(in1_alarm, voltage, ALARM, 1);
1087 static SENSOR_DEVICE_ATTR_2_RO(in2_input, voltage, INPUT, 2);
1088 static SENSOR_DEVICE_ATTR_2_RW(in2_max, voltage, MAX, 2);
1089 static SENSOR_DEVICE_ATTR_2_RW(in2_min, voltage, MIN, 2);
1090 static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, voltage, ALARM, 2);
1091 static SENSOR_DEVICE_ATTR_2_RO(in3_input, voltage, INPUT, 3);
1092 static SENSOR_DEVICE_ATTR_2_RW(in3_max, voltage, MAX, 3);
1093 static SENSOR_DEVICE_ATTR_2_RW(in3_min, voltage, MIN, 3);
1094 static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, voltage, ALARM, 3);
1095 static SENSOR_DEVICE_ATTR_2_RO(in4_input, voltage, INPUT, 4);
1096 static SENSOR_DEVICE_ATTR_2_RW(in4_max, voltage, MAX, 4);
1097 static SENSOR_DEVICE_ATTR_2_RW(in4_min, voltage, MIN, 4);
1098 static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, voltage, ALARM, 8);
1099 static SENSOR_DEVICE_ATTR_2_RO(in5_input, voltage, INPUT, 5);
1100 static SENSOR_DEVICE_ATTR_2_RW(in5_max, voltage, MAX, 5);
1101 static SENSOR_DEVICE_ATTR_2_RW(in5_min, voltage, MIN, 5);
1102 static SENSOR_DEVICE_ATTR_2_RO(in5_alarm, voltage, ALARM, 31);
1103 static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, INPUT, 0);
1104 static SENSOR_DEVICE_ATTR_2_RO(temp1_alarm, temp, ALARM, 0);
1105 static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, temp, FAULT, 0);
1106 static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, MAX, 0);
1107 static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, MIN, 0);
1108 static SENSOR_DEVICE_ATTR_2_RW(temp1_offset, temp, OFFSET, 0);
1109 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point1_temp, temp, AUTOMIN, 0);
1110 static SENSOR_DEVICE_ATTR_2_RW(temp1_auto_point2_temp, point2, 0, 0);
1111 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, THERM, 0);
1112 static SENSOR_DEVICE_ATTR_2_RW(temp1_crit_hyst, temp, HYSTERSIS, 0);
1113 static SENSOR_DEVICE_ATTR_2_RW(temp1_smoothing, temp_st, 0, 0);
1114 static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, INPUT, 1);
1115 static SENSOR_DEVICE_ATTR_2_RO(temp2_alarm, temp, ALARM, 1);
1116 static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, MAX, 1);
1117 static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, MIN, 1);
1118 static SENSOR_DEVICE_ATTR_2_RW(temp2_offset, temp, OFFSET, 1);
1119 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point1_temp, temp, AUTOMIN, 1);
1120 static SENSOR_DEVICE_ATTR_2_RW(temp2_auto_point2_temp, point2, 0, 1);
1121 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, THERM, 1);
1122 static SENSOR_DEVICE_ATTR_2_RW(temp2_crit_hyst, temp, HYSTERSIS, 1);
1123 static SENSOR_DEVICE_ATTR_2_RW(temp2_smoothing, temp_st, 0, 1);
1124 static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, INPUT, 2);
1125 static SENSOR_DEVICE_ATTR_2_RO(temp3_alarm, temp, ALARM, 2);
1126 static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, temp, FAULT, 2);
1127 static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, MAX, 2);
1128 static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, MIN, 2);
1129 static SENSOR_DEVICE_ATTR_2_RW(temp3_offset, temp, OFFSET, 2);
1130 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point1_temp, temp, AUTOMIN, 2);
1131 static SENSOR_DEVICE_ATTR_2_RW(temp3_auto_point2_temp, point2, 0, 2);
1132 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, THERM, 2);
1133 static SENSOR_DEVICE_ATTR_2_RW(temp3_crit_hyst, temp, HYSTERSIS, 2);
1134 static SENSOR_DEVICE_ATTR_2_RW(temp3_smoothing, temp_st, 0, 2);
1135 static SENSOR_DEVICE_ATTR_2_RO(fan1_input, tach, INPUT, 0);
1136 static SENSOR_DEVICE_ATTR_2_RW(fan1_min, tach, MIN, 0);
1137 static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, tach, ALARM, 0);
1138 static SENSOR_DEVICE_ATTR_2_RO(fan2_input, tach, INPUT, 1);
1139 static SENSOR_DEVICE_ATTR_2_RW(fan2_min, tach, MIN, 1);
1140 static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, tach, ALARM, 1);
1141 static SENSOR_DEVICE_ATTR_2_RO(fan3_input, tach, INPUT, 2);
1142 static SENSOR_DEVICE_ATTR_2_RW(fan3_min, tach, MIN, 2);
1143 static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, tach, ALARM, 2);
1144 static SENSOR_DEVICE_ATTR_2_RO(fan4_input, tach, INPUT, 3);
1145 static SENSOR_DEVICE_ATTR_2_RW(fan4_min, tach, MIN, 3);
1146 static SENSOR_DEVICE_ATTR_2_RO(fan4_alarm, tach, ALARM, 3);
1147 static SENSOR_DEVICE_ATTR_2_RW(pwm1, pwm, INPUT, 0);
1148 static SENSOR_DEVICE_ATTR_2_RW(pwm1_freq, pwmfreq, INPUT, 0);
1149 static SENSOR_DEVICE_ATTR_2_RW(pwm1_enable, pwmctrl, INPUT, 0);
1150 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_channels_temp, pwmchan, INPUT, 0);
1151 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_pwm, pwm, MIN, 0);
1152 static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_pwm, pwm, MAX, 0);
1153 static SENSOR_DEVICE_ATTR_2_RW(pwm1_stall_disable, stall_disable, 0, 0);
1154 static SENSOR_DEVICE_ATTR_2_RW(pwm2, pwm, INPUT, 1);
1155 static SENSOR_DEVICE_ATTR_2_RW(pwm2_freq, pwmfreq, INPUT, 1);
1156 static SENSOR_DEVICE_ATTR_2_RW(pwm2_enable, pwmctrl, INPUT, 1);
1157 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_channels_temp, pwmchan, INPUT, 1);
1158 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_pwm, pwm, MIN, 1);
1159 static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_pwm, pwm, MAX, 1);
1160 static SENSOR_DEVICE_ATTR_2_RW(pwm2_stall_disable, stall_disable, 0, 1);
1161 static SENSOR_DEVICE_ATTR_2_RW(pwm3, pwm, INPUT, 2);
1162 static SENSOR_DEVICE_ATTR_2_RW(pwm3_freq, pwmfreq, INPUT, 2);
1163 static SENSOR_DEVICE_ATTR_2_RW(pwm3_enable, pwmctrl, INPUT, 2);
1164 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_channels_temp, pwmchan, INPUT, 2);
1165 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_pwm, pwm, MIN, 2);
1166 static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_pwm, pwm, MAX, 2);
1167 static SENSOR_DEVICE_ATTR_2_RW(pwm3_stall_disable, stall_disable, 0, 2);
1169 /* Non-standard name, might need revisiting */
1170 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1172 static DEVICE_ATTR_RW(vrm);
1173 static DEVICE_ATTR_RO(cpu0_vid);
1175 static struct attribute *adt7475_attrs[] = {
1176 &sensor_dev_attr_in1_input.dev_attr.attr,
1177 &sensor_dev_attr_in1_max.dev_attr.attr,
1178 &sensor_dev_attr_in1_min.dev_attr.attr,
1179 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1180 &sensor_dev_attr_in2_input.dev_attr.attr,
1181 &sensor_dev_attr_in2_max.dev_attr.attr,
1182 &sensor_dev_attr_in2_min.dev_attr.attr,
1183 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1184 &sensor_dev_attr_temp1_input.dev_attr.attr,
1185 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1186 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1187 &sensor_dev_attr_temp1_max.dev_attr.attr,
1188 &sensor_dev_attr_temp1_min.dev_attr.attr,
1189 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1190 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1191 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1192 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1193 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1194 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1195 &sensor_dev_attr_temp2_input.dev_attr.attr,
1196 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1197 &sensor_dev_attr_temp2_max.dev_attr.attr,
1198 &sensor_dev_attr_temp2_min.dev_attr.attr,
1199 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1200 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1201 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1202 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1203 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1204 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1205 &sensor_dev_attr_temp3_input.dev_attr.attr,
1206 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1207 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1208 &sensor_dev_attr_temp3_max.dev_attr.attr,
1209 &sensor_dev_attr_temp3_min.dev_attr.attr,
1210 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1211 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1212 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1213 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1214 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1215 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1216 &sensor_dev_attr_fan1_input.dev_attr.attr,
1217 &sensor_dev_attr_fan1_min.dev_attr.attr,
1218 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1219 &sensor_dev_attr_fan2_input.dev_attr.attr,
1220 &sensor_dev_attr_fan2_min.dev_attr.attr,
1221 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1222 &sensor_dev_attr_fan3_input.dev_attr.attr,
1223 &sensor_dev_attr_fan3_min.dev_attr.attr,
1224 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1225 &sensor_dev_attr_pwm1.dev_attr.attr,
1226 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1227 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1228 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1229 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1230 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1231 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1232 &sensor_dev_attr_pwm3.dev_attr.attr,
1233 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1234 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1235 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1236 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1237 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1238 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1239 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1243 static struct attribute *fan4_attrs[] = {
1244 &sensor_dev_attr_fan4_input.dev_attr.attr,
1245 &sensor_dev_attr_fan4_min.dev_attr.attr,
1246 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1250 static struct attribute *pwm2_attrs[] = {
1251 &sensor_dev_attr_pwm2.dev_attr.attr,
1252 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1253 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1254 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1255 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1256 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1257 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1261 static struct attribute *in0_attrs[] = {
1262 &sensor_dev_attr_in0_input.dev_attr.attr,
1263 &sensor_dev_attr_in0_max.dev_attr.attr,
1264 &sensor_dev_attr_in0_min.dev_attr.attr,
1265 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1269 static struct attribute *in3_attrs[] = {
1270 &sensor_dev_attr_in3_input.dev_attr.attr,
1271 &sensor_dev_attr_in3_max.dev_attr.attr,
1272 &sensor_dev_attr_in3_min.dev_attr.attr,
1273 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1277 static struct attribute *in4_attrs[] = {
1278 &sensor_dev_attr_in4_input.dev_attr.attr,
1279 &sensor_dev_attr_in4_max.dev_attr.attr,
1280 &sensor_dev_attr_in4_min.dev_attr.attr,
1281 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1285 static struct attribute *in5_attrs[] = {
1286 &sensor_dev_attr_in5_input.dev_attr.attr,
1287 &sensor_dev_attr_in5_max.dev_attr.attr,
1288 &sensor_dev_attr_in5_min.dev_attr.attr,
1289 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1293 static struct attribute *vid_attrs[] = {
1294 &dev_attr_cpu0_vid.attr,
1299 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1300 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1301 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1302 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1303 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1304 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1305 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1306 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1308 static int adt7475_detect(struct i2c_client *client,
1309 struct i2c_board_info *info)
1311 struct i2c_adapter *adapter = client->adapter;
1312 int vendid, devid, devid2;
1315 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1318 vendid = adt7475_read(REG_VENDID);
1319 devid2 = adt7475_read(REG_DEVID2);
1320 if (vendid != 0x41 || /* Analog Devices */
1321 (devid2 & 0xf8) != 0x68)
1324 devid = adt7475_read(REG_DEVID);
1327 else if (devid == 0x75 && client->addr == 0x2e)
1329 else if (devid == 0x76)
1331 else if ((devid2 & 0xfc) == 0x6c)
1334 dev_dbg(&adapter->dev,
1335 "Couldn't detect an ADT7473/75/76/90 part at "
1336 "0x%02x\n", (unsigned int)client->addr);
1340 strlcpy(info->type, name, I2C_NAME_SIZE);
1345 static void adt7475_remove_files(struct i2c_client *client,
1346 struct adt7475_data *data)
1348 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1350 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1352 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1353 if (data->has_voltage & (1 << 0))
1354 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1355 if (data->has_voltage & (1 << 3))
1356 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1357 if (data->has_voltage & (1 << 4))
1358 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1359 if (data->has_voltage & (1 << 5))
1360 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1362 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1365 static int adt7475_update_limits(struct i2c_client *client)
1367 struct adt7475_data *data = i2c_get_clientdata(client);
1371 ret = adt7475_read(REG_CONFIG4);
1374 data->config4 = ret;
1376 ret = adt7475_read(REG_CONFIG5);
1379 data->config5 = ret;
1381 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1382 if (!(data->has_voltage & (1 << i)))
1384 /* Adjust values so they match the input precision */
1385 ret = adt7475_read(VOLTAGE_MIN_REG(i));
1388 data->voltage[MIN][i] = ret << 2;
1390 ret = adt7475_read(VOLTAGE_MAX_REG(i));
1393 data->voltage[MAX][i] = ret << 2;
1396 if (data->has_voltage & (1 << 5)) {
1397 ret = adt7475_read(REG_VTT_MIN);
1400 data->voltage[MIN][5] = ret << 2;
1402 ret = adt7475_read(REG_VTT_MAX);
1405 data->voltage[MAX][5] = ret << 2;
1408 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1409 /* Adjust values so they match the input precision */
1410 ret = adt7475_read(TEMP_MIN_REG(i));
1413 data->temp[MIN][i] = ret << 2;
1415 ret = adt7475_read(TEMP_MAX_REG(i));
1418 data->temp[MAX][i] = ret << 2;
1420 ret = adt7475_read(TEMP_TMIN_REG(i));
1423 data->temp[AUTOMIN][i] = ret << 2;
1425 ret = adt7475_read(TEMP_THERM_REG(i));
1428 data->temp[THERM][i] = ret << 2;
1430 ret = adt7475_read(TEMP_OFFSET_REG(i));
1433 data->temp[OFFSET][i] = ret;
1435 adt7475_read_hystersis(client);
1437 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1438 if (i == 3 && !data->has_fan4)
1440 ret = adt7475_read_word(client, TACH_MIN_REG(i));
1443 data->tach[MIN][i] = ret;
1446 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1447 if (i == 1 && !data->has_pwm2)
1449 ret = adt7475_read(PWM_MAX_REG(i));
1452 data->pwm[MAX][i] = ret;
1454 ret = adt7475_read(PWM_MIN_REG(i));
1457 data->pwm[MIN][i] = ret;
1458 /* Set the channel and control information */
1459 adt7475_read_pwm(client, i);
1462 ret = adt7475_read(TEMP_TRANGE_REG(0));
1465 data->range[0] = ret;
1467 ret = adt7475_read(TEMP_TRANGE_REG(1));
1470 data->range[1] = ret;
1472 ret = adt7475_read(TEMP_TRANGE_REG(2));
1475 data->range[2] = ret;
1480 static int adt7475_probe(struct i2c_client *client,
1481 const struct i2c_device_id *id)
1484 static const char * const names[] = {
1485 [adt7473] = "ADT7473",
1486 [adt7475] = "ADT7475",
1487 [adt7476] = "ADT7476",
1488 [adt7490] = "ADT7490",
1491 struct adt7475_data *data;
1492 int i, ret = 0, revision;
1493 u8 config2, config3;
1495 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1499 mutex_init(&data->lock);
1500 i2c_set_clientdata(client, data);
1502 if (client->dev.of_node)
1503 chip = (enum chips)of_device_get_match_data(&client->dev);
1505 chip = id->driver_data;
1507 /* Initialize device-specific values */
1510 data->has_voltage = 0x0e; /* in1 to in3 */
1511 revision = adt7475_read(REG_DEVID2) & 0x07;
1514 data->has_voltage = 0x3e; /* in1 to in5 */
1515 revision = adt7475_read(REG_DEVID2) & 0x03;
1516 if (revision == 0x03)
1517 revision += adt7475_read(REG_DEVREV2);
1520 data->has_voltage = 0x06; /* in1, in2 */
1521 revision = adt7475_read(REG_DEVID2) & 0x07;
1524 config3 = adt7475_read(REG_CONFIG3);
1525 /* Pin PWM2 may alternatively be used for ALERT output */
1526 if (!(config3 & CONFIG3_SMBALERT))
1528 /* Meaning of this bit is inverted for the ADT7473-1 */
1529 if (id->driver_data == adt7473 && revision >= 1)
1530 data->has_pwm2 = !data->has_pwm2;
1532 data->config4 = adt7475_read(REG_CONFIG4);
1533 /* Pin TACH4 may alternatively be used for THERM */
1534 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1538 * THERM configuration is more complex on the ADT7476 and ADT7490,
1539 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1542 if (id->driver_data == adt7490) {
1543 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1544 !(config3 & CONFIG3_THERM))
1547 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1548 if (!(config3 & CONFIG3_THERM) ||
1549 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1550 data->has_voltage |= (1 << 0); /* in0 */
1554 * On the ADT7476, the +12V input pin may instead be used as VID5,
1555 * and VID pins may alternatively be used as GPIO
1557 if (id->driver_data == adt7476) {
1558 u8 vid = adt7475_read(REG_VID);
1559 if (!(vid & VID_VIDSEL))
1560 data->has_voltage |= (1 << 4); /* in4 */
1562 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1565 /* Voltage attenuators can be bypassed, globally or individually */
1566 config2 = adt7475_read(REG_CONFIG2);
1567 if (config2 & CONFIG2_ATTN) {
1568 data->bypass_attn = (0x3 << 3) | 0x3;
1570 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1571 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1573 data->bypass_attn &= data->has_voltage;
1576 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1577 * pwm's which are disabled to manual mode with 0% duty cycle
1579 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1580 adt7475_read_pwm(client, i);
1582 /* Start monitoring */
1586 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1587 adt7475_read(REG_CONFIG1) | 0x01);
1593 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1597 /* Features that can be disabled individually */
1598 if (data->has_fan4) {
1599 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1603 if (data->has_pwm2) {
1604 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1608 if (data->has_voltage & (1 << 0)) {
1609 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1613 if (data->has_voltage & (1 << 3)) {
1614 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1618 if (data->has_voltage & (1 << 4)) {
1619 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1623 if (data->has_voltage & (1 << 5)) {
1624 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1628 if (data->has_vid) {
1629 data->vrm = vid_which_vrm();
1630 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1635 data->hwmon_dev = hwmon_device_register(&client->dev);
1636 if (IS_ERR(data->hwmon_dev)) {
1637 ret = PTR_ERR(data->hwmon_dev);
1641 dev_info(&client->dev, "%s device, revision %d\n",
1642 names[id->driver_data], revision);
1643 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1644 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1645 (data->has_voltage & (1 << 0)) ? " in0" : "",
1646 (data->has_voltage & (1 << 4)) ? " in4" : "",
1647 data->has_fan4 ? " fan4" : "",
1648 data->has_pwm2 ? " pwm2" : "",
1649 data->has_vid ? " vid" : "");
1650 if (data->bypass_attn)
1651 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1652 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1653 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1654 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1655 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1657 /* Limits and settings, should never change update more than once */
1658 ret = adt7475_update_limits(client);
1665 adt7475_remove_files(client, data);
1669 static int adt7475_remove(struct i2c_client *client)
1671 struct adt7475_data *data = i2c_get_clientdata(client);
1673 hwmon_device_unregister(data->hwmon_dev);
1674 adt7475_remove_files(client, data);
1679 static struct i2c_driver adt7475_driver = {
1680 .class = I2C_CLASS_HWMON,
1683 .of_match_table = of_match_ptr(adt7475_of_match),
1685 .probe = adt7475_probe,
1686 .remove = adt7475_remove,
1687 .id_table = adt7475_id,
1688 .detect = adt7475_detect,
1689 .address_list = normal_i2c,
1692 static void adt7475_read_hystersis(struct i2c_client *client)
1694 struct adt7475_data *data = i2c_get_clientdata(client);
1696 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1697 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1698 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1701 static void adt7475_read_pwm(struct i2c_client *client, int index)
1703 struct adt7475_data *data = i2c_get_clientdata(client);
1706 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1709 * Figure out the internal value for pwmctrl and pwmchan
1710 * based on the current settings
1712 v = (data->pwm[CONTROL][index] >> 5) & 7;
1715 data->pwmctl[index] = 0;
1717 data->pwmctl[index] = 1;
1720 * The fan is disabled - we don't want to
1721 * support that, so change to manual mode and
1722 * set the duty cycle to 0 instead
1724 data->pwm[INPUT][index] = 0;
1725 data->pwm[CONTROL][index] &= ~0xE0;
1726 data->pwm[CONTROL][index] |= (7 << 5);
1728 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1729 data->pwm[INPUT][index]);
1731 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1732 data->pwm[CONTROL][index]);
1734 data->pwmctl[index] = 1;
1736 data->pwmctl[index] = 2;
1740 data->pwmchan[index] = 1;
1743 data->pwmchan[index] = 2;
1746 data->pwmchan[index] = 4;
1749 data->pwmchan[index] = 6;
1752 data->pwmchan[index] = 7;
1758 static int adt7475_update_measure(struct device *dev)
1760 struct i2c_client *client = to_i2c_client(dev);
1761 struct adt7475_data *data = i2c_get_clientdata(client);
1766 ret = adt7475_read(REG_STATUS2);
1769 data->alarms = ret << 8;
1771 ret = adt7475_read(REG_STATUS1);
1774 data->alarms |= ret;
1776 ret = adt7475_read(REG_EXTEND2);
1782 ret = adt7475_read(REG_EXTEND1);
1788 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1789 if (!(data->has_voltage & (1 << i)))
1791 ret = adt7475_read(VOLTAGE_REG(i));
1794 data->voltage[INPUT][i] =
1796 ((ext >> (i * 2)) & 3);
1799 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1800 ret = adt7475_read(TEMP_REG(i));
1803 data->temp[INPUT][i] =
1805 ((ext >> ((i + 5) * 2)) & 3);
1808 if (data->has_voltage & (1 << 5)) {
1809 ret = adt7475_read(REG_STATUS4);
1812 data->alarms |= ret << 24;
1814 ret = adt7475_read(REG_EXTEND3);
1819 ret = adt7475_read(REG_VTT);
1822 data->voltage[INPUT][5] = ret << 2 |
1826 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1827 if (i == 3 && !data->has_fan4)
1829 ret = adt7475_read_word(client, TACH_REG(i));
1832 data->tach[INPUT][i] = ret;
1835 /* Updated by hw when in auto mode */
1836 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1837 if (i == 1 && !data->has_pwm2)
1839 ret = adt7475_read(PWM_REG(i));
1842 data->pwm[INPUT][i] = ret;
1845 if (data->has_vid) {
1846 ret = adt7475_read(REG_VID);
1849 data->vid = ret & 0x3f;
1855 static struct adt7475_data *adt7475_update_device(struct device *dev)
1857 struct i2c_client *client = to_i2c_client(dev);
1858 struct adt7475_data *data = i2c_get_clientdata(client);
1861 mutex_lock(&data->lock);
1863 /* Measurement values update every 2 seconds */
1864 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1866 ret = adt7475_update_measure(dev);
1868 data->valid = false;
1869 mutex_unlock(&data->lock);
1870 return ERR_PTR(ret);
1872 data->measure_updated = jiffies;
1876 mutex_unlock(&data->lock);
1881 module_i2c_driver(adt7475_driver);
1883 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1884 MODULE_DESCRIPTION("adt7475 driver");
1885 MODULE_LICENSE("GPL");