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/init.h>
17 #include <linux/slab.h>
18 #include <linux/i2c.h>
19 #include <linux/hwmon.h>
20 #include <linux/hwmon-sysfs.h>
21 #include <linux/hwmon-vid.h>
22 #include <linux/err.h>
23 #include <linux/jiffies.h>
25 /* Indexes for the sysfs hooks */
37 * These are unique identifiers for the sysfs functions - unlike the
38 * numbers above, these are not also indexes into an array
44 /* 7475 Common Registers */
46 #define REG_DEVREV2 0x12 /* ADT7490 only */
48 #define REG_VTT 0x1E /* ADT7490 only */
49 #define REG_EXTEND3 0x1F /* ADT7490 only */
51 #define REG_VOLTAGE_BASE 0x20
52 #define REG_TEMP_BASE 0x25
53 #define REG_TACH_BASE 0x28
54 #define REG_PWM_BASE 0x30
55 #define REG_PWM_MAX_BASE 0x38
57 #define REG_DEVID 0x3D
58 #define REG_VENDID 0x3E
59 #define REG_DEVID2 0x3F
61 #define REG_STATUS1 0x41
62 #define REG_STATUS2 0x42
64 #define REG_VID 0x43 /* ADT7476 only */
66 #define REG_VOLTAGE_MIN_BASE 0x44
67 #define REG_VOLTAGE_MAX_BASE 0x45
69 #define REG_TEMP_MIN_BASE 0x4E
70 #define REG_TEMP_MAX_BASE 0x4F
72 #define REG_TACH_MIN_BASE 0x54
74 #define REG_PWM_CONFIG_BASE 0x5C
76 #define REG_TEMP_TRANGE_BASE 0x5F
78 #define REG_PWM_MIN_BASE 0x64
80 #define REG_TEMP_TMIN_BASE 0x67
81 #define REG_TEMP_THERM_BASE 0x6A
83 #define REG_REMOTE1_HYSTERSIS 0x6D
84 #define REG_REMOTE2_HYSTERSIS 0x6E
86 #define REG_TEMP_OFFSET_BASE 0x70
88 #define REG_CONFIG2 0x73
90 #define REG_EXTEND1 0x76
91 #define REG_EXTEND2 0x77
93 #define REG_CONFIG3 0x78
94 #define REG_CONFIG5 0x7C
95 #define REG_CONFIG4 0x7D
97 #define REG_STATUS4 0x81 /* ADT7490 only */
99 #define REG_VTT_MIN 0x84 /* ADT7490 only */
100 #define REG_VTT_MAX 0x86 /* ADT7490 only */
102 #define VID_VIDSEL 0x80 /* ADT7476 only */
104 #define CONFIG2_ATTN 0x20
106 #define CONFIG3_SMBALERT 0x01
107 #define CONFIG3_THERM 0x02
109 #define CONFIG4_PINFUNC 0x03
110 #define CONFIG4_MAXDUTY 0x08
111 #define CONFIG4_ATTN_IN10 0x30
112 #define CONFIG4_ATTN_IN43 0xC0
114 #define CONFIG5_TWOSCOMP 0x01
115 #define CONFIG5_TEMPOFFSET 0x02
116 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
118 /* ADT7475 Settings */
120 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
121 #define ADT7475_TEMP_COUNT 3
122 #define ADT7475_TACH_COUNT 4
123 #define ADT7475_PWM_COUNT 3
125 /* Macro to read the registers */
127 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
129 /* Macros to easily index the registers */
131 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
132 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
134 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
135 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
136 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
137 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
139 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
140 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
141 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
143 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
144 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
145 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
146 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
147 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
148 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
149 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
151 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
153 enum chips { adt7473, adt7475, adt7476, adt7490 };
155 static const struct i2c_device_id adt7475_id[] = {
156 { "adt7473", adt7473 },
157 { "adt7475", adt7475 },
158 { "adt7476", adt7476 },
159 { "adt7490", adt7490 },
162 MODULE_DEVICE_TABLE(i2c, adt7475_id);
164 struct adt7475_data {
165 struct device *hwmon_dev;
168 unsigned long measure_updated;
169 unsigned long limits_updated;
175 u8 bypass_attn; /* Bypass voltage attenuator */
192 static struct i2c_driver adt7475_driver;
193 static struct adt7475_data *adt7475_update_device(struct device *dev);
194 static void adt7475_read_hystersis(struct i2c_client *client);
195 static void adt7475_read_pwm(struct i2c_client *client, int index);
197 /* Given a temp value, convert it to register value */
199 static inline u16 temp2reg(struct adt7475_data *data, long val)
203 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
204 val = clamp_val(val, -64000, 191000);
205 ret = (val + 64500) / 1000;
207 val = clamp_val(val, -128000, 127000);
209 ret = (256500 + val) / 1000;
211 ret = (val + 500) / 1000;
217 /* Given a register value, convert it to a real temp value */
219 static inline int reg2temp(struct adt7475_data *data, u16 reg)
221 if (data->config5 & CONFIG5_TWOSCOMP) {
223 return (reg - 1024) * 250;
227 return (reg - 256) * 250;
230 static inline int tach2rpm(u16 tach)
232 if (tach == 0 || tach == 0xFFFF)
235 return (90000 * 60) / tach;
238 static inline u16 rpm2tach(unsigned long rpm)
243 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
246 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
247 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
248 { 45, 94 }, /* +2.5V */
249 { 175, 525 }, /* Vccp */
250 { 68, 71 }, /* Vcc */
251 { 93, 47 }, /* +5V */
252 { 120, 20 }, /* +12V */
253 { 45, 45 }, /* Vtt */
256 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
258 const int *r = adt7473_in_scaling[channel];
260 if (bypass_attn & (1 << channel))
261 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
262 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
265 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
267 const int *r = adt7473_in_scaling[channel];
270 if (bypass_attn & (1 << channel))
271 reg = (volt * 1024) / 2250;
273 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
274 return clamp_val(reg, 0, 1023) & (0xff << 2);
277 static int adt7475_read_word(struct i2c_client *client, int reg)
281 val1 = i2c_smbus_read_byte_data(client, reg);
284 val2 = i2c_smbus_read_byte_data(client, reg + 1);
288 return val1 | (val2 << 8);
291 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
293 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
294 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
298 * Find the nearest value in a table - used for pwm frequency and
301 static int find_nearest(long val, const int *array, int size)
308 if (val > array[size - 1])
311 for (i = 0; i < size - 1; i++) {
314 if (val > array[i + 1])
318 b = array[i + 1] - val;
320 return (a <= b) ? i : i + 1;
326 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
329 struct adt7475_data *data = adt7475_update_device(dev);
330 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
335 return sprintf(buf, "%d\n",
336 (data->alarms >> sattr->index) & 1);
338 val = data->voltage[sattr->nr][sattr->index];
339 return sprintf(buf, "%d\n",
340 reg2volt(sattr->index, val, data->bypass_attn));
344 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
345 const char *buf, size_t count)
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 show_temp(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);
390 mutex_lock(&data->lock);
391 out = data->temp[sattr->nr][sattr->index];
392 if (sattr->index != 1)
393 out = (out >> 4) & 0xF;
397 * Show the value as an absolute number tied to
400 out = reg2temp(data, data->temp[THERM][sattr->index]) -
402 mutex_unlock(&data->lock);
407 * Offset is always 2's complement, regardless of the
410 mutex_lock(&data->lock);
411 out = (s8)data->temp[sattr->nr][sattr->index];
412 if (data->config5 & CONFIG5_TEMPOFFSET)
416 mutex_unlock(&data->lock);
420 out = (data->alarms >> (sattr->index + 4)) & 1;
424 /* Note - only for remote1 and remote2 */
425 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
429 /* All other temp values are in the configured format */
430 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
433 return sprintf(buf, "%d\n", out);
436 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
437 const char *buf, size_t count)
439 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
440 struct i2c_client *client = to_i2c_client(dev);
441 struct adt7475_data *data = i2c_get_clientdata(client);
442 unsigned char reg = 0;
447 if (kstrtol(buf, 10, &val))
450 mutex_lock(&data->lock);
452 /* We need the config register in all cases for temp <-> reg conv. */
453 data->config5 = adt7475_read(REG_CONFIG5);
457 if (data->config5 & CONFIG5_TEMPOFFSET) {
458 val = clamp_val(val, -63000, 127000);
459 out = data->temp[OFFSET][sattr->index] = val / 1000;
461 val = clamp_val(val, -63000, 64000);
462 out = data->temp[OFFSET][sattr->index] = val / 500;
468 * The value will be given as an absolute value, turn it
469 * into an offset based on THERM
472 /* Read fresh THERM and HYSTERSIS values from the chip */
473 data->temp[THERM][sattr->index] =
474 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
475 adt7475_read_hystersis(client);
477 temp = reg2temp(data, data->temp[THERM][sattr->index]);
478 val = clamp_val(val, temp - 15000, temp);
479 val = (temp - val) / 1000;
481 if (sattr->index != 1) {
482 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
483 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
485 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
486 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
489 out = data->temp[HYSTERSIS][sattr->index];
493 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
496 * We maintain an extra 2 digits of precision for simplicity
497 * - shift those back off before writing the value
499 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
504 reg = TEMP_MIN_REG(sattr->index);
507 reg = TEMP_MAX_REG(sattr->index);
510 reg = TEMP_OFFSET_REG(sattr->index);
513 reg = TEMP_TMIN_REG(sattr->index);
516 reg = TEMP_THERM_REG(sattr->index);
519 if (sattr->index != 2)
520 reg = REG_REMOTE1_HYSTERSIS;
522 reg = REG_REMOTE2_HYSTERSIS;
527 i2c_smbus_write_byte_data(client, reg, out);
529 mutex_unlock(&data->lock);
534 * Table of autorange values - the user will write the value in millidegrees,
535 * and we'll convert it
537 static const int autorange_table[] = {
538 2000, 2500, 3330, 4000, 5000, 6670, 8000,
539 10000, 13330, 16000, 20000, 26670, 32000, 40000,
543 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
546 struct adt7475_data *data = adt7475_update_device(dev);
547 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
550 mutex_lock(&data->lock);
551 out = (data->range[sattr->index] >> 4) & 0x0F;
552 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
553 mutex_unlock(&data->lock);
555 return sprintf(buf, "%d\n", val + autorange_table[out]);
558 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
559 const char *buf, size_t count)
561 struct i2c_client *client = to_i2c_client(dev);
562 struct adt7475_data *data = i2c_get_clientdata(client);
563 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
567 if (kstrtol(buf, 10, &val))
570 mutex_lock(&data->lock);
572 /* Get a fresh copy of the needed registers */
573 data->config5 = adt7475_read(REG_CONFIG5);
574 data->temp[AUTOMIN][sattr->index] =
575 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
576 data->range[sattr->index] =
577 adt7475_read(TEMP_TRANGE_REG(sattr->index));
580 * The user will write an absolute value, so subtract the start point
581 * to figure the range
583 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
584 val = clamp_val(val, temp + autorange_table[0],
585 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
588 /* Find the nearest table entry to what the user wrote */
589 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
591 data->range[sattr->index] &= ~0xF0;
592 data->range[sattr->index] |= val << 4;
594 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
595 data->range[sattr->index]);
597 mutex_unlock(&data->lock);
601 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
604 struct adt7475_data *data = adt7475_update_device(dev);
605 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
608 if (sattr->nr == ALARM)
609 out = (data->alarms >> (sattr->index + 10)) & 1;
611 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
613 return sprintf(buf, "%d\n", out);
616 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
617 const char *buf, size_t count)
620 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
621 struct i2c_client *client = to_i2c_client(dev);
622 struct adt7475_data *data = i2c_get_clientdata(client);
625 if (kstrtoul(buf, 10, &val))
628 mutex_lock(&data->lock);
630 data->tach[MIN][sattr->index] = rpm2tach(val);
632 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
633 data->tach[MIN][sattr->index]);
635 mutex_unlock(&data->lock);
639 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
642 struct adt7475_data *data = adt7475_update_device(dev);
643 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
645 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
648 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
651 struct adt7475_data *data = adt7475_update_device(dev);
652 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
654 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
657 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
660 struct adt7475_data *data = adt7475_update_device(dev);
661 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
663 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
666 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
667 const char *buf, size_t count)
670 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
671 struct i2c_client *client = to_i2c_client(dev);
672 struct adt7475_data *data = i2c_get_clientdata(client);
673 unsigned char reg = 0;
676 if (kstrtol(buf, 10, &val))
679 mutex_lock(&data->lock);
683 /* Get a fresh value for CONTROL */
684 data->pwm[CONTROL][sattr->index] =
685 adt7475_read(PWM_CONFIG_REG(sattr->index));
688 * If we are not in manual mode, then we shouldn't allow
689 * the user to set the pwm speed
691 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
692 mutex_unlock(&data->lock);
696 reg = PWM_REG(sattr->index);
700 reg = PWM_MIN_REG(sattr->index);
704 reg = PWM_MAX_REG(sattr->index);
708 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
709 i2c_smbus_write_byte_data(client, reg,
710 data->pwm[sattr->nr][sattr->index]);
712 mutex_unlock(&data->lock);
717 /* Called by set_pwmctrl and set_pwmchan */
719 static int hw_set_pwm(struct i2c_client *client, int index,
720 unsigned int pwmctl, unsigned int pwmchan)
722 struct adt7475_data *data = i2c_get_clientdata(client);
727 val = 0x03; /* Run at full speed */
730 val = 0x07; /* Manual mode */
735 /* Remote1 controls PWM */
739 /* local controls PWM */
743 /* remote2 controls PWM */
747 /* local/remote2 control PWM */
751 /* All three control PWM */
762 data->pwmctl[index] = pwmctl;
763 data->pwmchan[index] = pwmchan;
765 data->pwm[CONTROL][index] &= ~0xE0;
766 data->pwm[CONTROL][index] |= (val & 7) << 5;
768 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
769 data->pwm[CONTROL][index]);
774 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
775 const char *buf, size_t count)
777 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
778 struct i2c_client *client = to_i2c_client(dev);
779 struct adt7475_data *data = i2c_get_clientdata(client);
783 if (kstrtol(buf, 10, &val))
786 mutex_lock(&data->lock);
787 /* Read Modify Write PWM values */
788 adt7475_read_pwm(client, sattr->index);
789 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
792 mutex_unlock(&data->lock);
797 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
798 const char *buf, size_t count)
800 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
801 struct i2c_client *client = to_i2c_client(dev);
802 struct adt7475_data *data = i2c_get_clientdata(client);
806 if (kstrtol(buf, 10, &val))
809 mutex_lock(&data->lock);
810 /* Read Modify Write PWM values */
811 adt7475_read_pwm(client, sattr->index);
812 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
815 mutex_unlock(&data->lock);
820 /* List of frequencies for the PWM */
821 static const int pwmfreq_table[] = {
822 11, 14, 22, 29, 35, 44, 58, 88
825 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
828 struct adt7475_data *data = adt7475_update_device(dev);
829 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
831 return sprintf(buf, "%d\n",
832 pwmfreq_table[data->range[sattr->index] & 7]);
835 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
836 const char *buf, size_t count)
838 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
839 struct i2c_client *client = to_i2c_client(dev);
840 struct adt7475_data *data = i2c_get_clientdata(client);
844 if (kstrtol(buf, 10, &val))
847 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
849 mutex_lock(&data->lock);
851 data->range[sattr->index] =
852 adt7475_read(TEMP_TRANGE_REG(sattr->index));
853 data->range[sattr->index] &= ~7;
854 data->range[sattr->index] |= out;
856 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
857 data->range[sattr->index]);
859 mutex_unlock(&data->lock);
863 static ssize_t show_pwm_at_crit(struct device *dev,
864 struct device_attribute *devattr, char *buf)
866 struct adt7475_data *data = adt7475_update_device(dev);
867 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
870 static ssize_t set_pwm_at_crit(struct device *dev,
871 struct device_attribute *devattr,
872 const char *buf, size_t count)
874 struct i2c_client *client = to_i2c_client(dev);
875 struct adt7475_data *data = i2c_get_clientdata(client);
878 if (kstrtol(buf, 10, &val))
880 if (val != 0 && val != 1)
883 mutex_lock(&data->lock);
884 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
886 data->config4 |= CONFIG4_MAXDUTY;
888 data->config4 &= ~CONFIG4_MAXDUTY;
889 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
890 mutex_unlock(&data->lock);
895 static ssize_t show_vrm(struct device *dev, struct device_attribute *devattr,
898 struct adt7475_data *data = dev_get_drvdata(dev);
899 return sprintf(buf, "%d\n", (int)data->vrm);
902 static ssize_t set_vrm(struct device *dev, struct device_attribute *devattr,
903 const char *buf, size_t count)
905 struct adt7475_data *data = dev_get_drvdata(dev);
908 if (kstrtol(buf, 10, &val))
910 if (val < 0 || val > 255)
917 static ssize_t show_vid(struct device *dev, struct device_attribute *devattr,
920 struct adt7475_data *data = adt7475_update_device(dev);
921 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
924 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
925 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
926 set_voltage, MAX, 0);
927 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
928 set_voltage, MIN, 0);
929 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
930 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
931 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
932 set_voltage, MAX, 1);
933 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
934 set_voltage, MIN, 1);
935 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
936 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
937 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
938 set_voltage, MAX, 2);
939 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
940 set_voltage, MIN, 2);
941 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
942 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
943 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
944 set_voltage, MAX, 3);
945 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
946 set_voltage, MIN, 3);
947 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
948 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
949 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
950 set_voltage, MAX, 4);
951 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
952 set_voltage, MIN, 4);
953 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
954 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
955 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
956 set_voltage, MAX, 5);
957 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
958 set_voltage, MIN, 5);
959 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
960 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
961 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
962 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
963 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
965 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
967 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
968 set_temp, OFFSET, 0);
969 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
970 show_temp, set_temp, AUTOMIN, 0);
971 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
972 show_point2, set_point2, 0, 0);
973 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
975 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
976 set_temp, HYSTERSIS, 0);
977 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
978 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
979 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
981 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
983 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
984 set_temp, OFFSET, 1);
985 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
986 show_temp, set_temp, AUTOMIN, 1);
987 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
988 show_point2, set_point2, 0, 1);
989 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
991 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
992 set_temp, HYSTERSIS, 1);
993 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
994 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
995 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
996 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
998 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1000 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1001 set_temp, OFFSET, 2);
1002 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1003 show_temp, set_temp, AUTOMIN, 2);
1004 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1005 show_point2, set_point2, 0, 2);
1006 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1008 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1009 set_temp, HYSTERSIS, 2);
1010 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1011 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1013 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1014 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1015 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1017 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1018 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1019 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1021 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1022 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1023 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1025 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1026 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1028 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1029 set_pwmfreq, INPUT, 0);
1030 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1031 set_pwmctrl, INPUT, 0);
1032 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1033 show_pwmchan, set_pwmchan, INPUT, 0);
1034 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1036 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1038 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1040 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1041 set_pwmfreq, INPUT, 1);
1042 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1043 set_pwmctrl, INPUT, 1);
1044 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1045 show_pwmchan, set_pwmchan, INPUT, 1);
1046 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1048 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1050 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1052 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1053 set_pwmfreq, INPUT, 2);
1054 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1055 set_pwmctrl, INPUT, 2);
1056 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1057 show_pwmchan, set_pwmchan, INPUT, 2);
1058 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1060 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1063 /* Non-standard name, might need revisiting */
1064 static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
1065 show_pwm_at_crit, set_pwm_at_crit);
1067 static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, set_vrm);
1068 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1070 static struct attribute *adt7475_attrs[] = {
1071 &sensor_dev_attr_in1_input.dev_attr.attr,
1072 &sensor_dev_attr_in1_max.dev_attr.attr,
1073 &sensor_dev_attr_in1_min.dev_attr.attr,
1074 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1075 &sensor_dev_attr_in2_input.dev_attr.attr,
1076 &sensor_dev_attr_in2_max.dev_attr.attr,
1077 &sensor_dev_attr_in2_min.dev_attr.attr,
1078 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1079 &sensor_dev_attr_temp1_input.dev_attr.attr,
1080 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1081 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1082 &sensor_dev_attr_temp1_max.dev_attr.attr,
1083 &sensor_dev_attr_temp1_min.dev_attr.attr,
1084 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1085 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1086 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1087 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1088 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1089 &sensor_dev_attr_temp2_input.dev_attr.attr,
1090 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1091 &sensor_dev_attr_temp2_max.dev_attr.attr,
1092 &sensor_dev_attr_temp2_min.dev_attr.attr,
1093 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1094 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1095 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1096 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1097 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1098 &sensor_dev_attr_temp3_input.dev_attr.attr,
1099 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1100 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1101 &sensor_dev_attr_temp3_max.dev_attr.attr,
1102 &sensor_dev_attr_temp3_min.dev_attr.attr,
1103 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1104 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1105 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1106 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1107 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1108 &sensor_dev_attr_fan1_input.dev_attr.attr,
1109 &sensor_dev_attr_fan1_min.dev_attr.attr,
1110 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1111 &sensor_dev_attr_fan2_input.dev_attr.attr,
1112 &sensor_dev_attr_fan2_min.dev_attr.attr,
1113 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1114 &sensor_dev_attr_fan3_input.dev_attr.attr,
1115 &sensor_dev_attr_fan3_min.dev_attr.attr,
1116 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1117 &sensor_dev_attr_pwm1.dev_attr.attr,
1118 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1119 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1120 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1121 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1122 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1123 &sensor_dev_attr_pwm3.dev_attr.attr,
1124 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1125 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1126 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1127 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1128 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1129 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1133 static struct attribute *fan4_attrs[] = {
1134 &sensor_dev_attr_fan4_input.dev_attr.attr,
1135 &sensor_dev_attr_fan4_min.dev_attr.attr,
1136 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1140 static struct attribute *pwm2_attrs[] = {
1141 &sensor_dev_attr_pwm2.dev_attr.attr,
1142 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1143 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1144 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1145 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1146 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1150 static struct attribute *in0_attrs[] = {
1151 &sensor_dev_attr_in0_input.dev_attr.attr,
1152 &sensor_dev_attr_in0_max.dev_attr.attr,
1153 &sensor_dev_attr_in0_min.dev_attr.attr,
1154 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1158 static struct attribute *in3_attrs[] = {
1159 &sensor_dev_attr_in3_input.dev_attr.attr,
1160 &sensor_dev_attr_in3_max.dev_attr.attr,
1161 &sensor_dev_attr_in3_min.dev_attr.attr,
1162 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1166 static struct attribute *in4_attrs[] = {
1167 &sensor_dev_attr_in4_input.dev_attr.attr,
1168 &sensor_dev_attr_in4_max.dev_attr.attr,
1169 &sensor_dev_attr_in4_min.dev_attr.attr,
1170 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1174 static struct attribute *in5_attrs[] = {
1175 &sensor_dev_attr_in5_input.dev_attr.attr,
1176 &sensor_dev_attr_in5_max.dev_attr.attr,
1177 &sensor_dev_attr_in5_min.dev_attr.attr,
1178 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1182 static struct attribute *vid_attrs[] = {
1183 &dev_attr_cpu0_vid.attr,
1188 static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1189 static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1190 static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1191 static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1192 static struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1193 static struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1194 static struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1195 static struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1197 static int adt7475_detect(struct i2c_client *client,
1198 struct i2c_board_info *info)
1200 struct i2c_adapter *adapter = client->adapter;
1201 int vendid, devid, devid2;
1204 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1207 vendid = adt7475_read(REG_VENDID);
1208 devid2 = adt7475_read(REG_DEVID2);
1209 if (vendid != 0x41 || /* Analog Devices */
1210 (devid2 & 0xf8) != 0x68)
1213 devid = adt7475_read(REG_DEVID);
1216 else if (devid == 0x75 && client->addr == 0x2e)
1218 else if (devid == 0x76)
1220 else if ((devid2 & 0xfc) == 0x6c)
1223 dev_dbg(&adapter->dev,
1224 "Couldn't detect an ADT7473/75/76/90 part at "
1225 "0x%02x\n", (unsigned int)client->addr);
1229 strlcpy(info->type, name, I2C_NAME_SIZE);
1234 static void adt7475_remove_files(struct i2c_client *client,
1235 struct adt7475_data *data)
1237 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1239 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1241 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1242 if (data->has_voltage & (1 << 0))
1243 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1244 if (data->has_voltage & (1 << 3))
1245 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1246 if (data->has_voltage & (1 << 4))
1247 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1248 if (data->has_voltage & (1 << 5))
1249 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1251 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1254 static int adt7475_probe(struct i2c_client *client,
1255 const struct i2c_device_id *id)
1257 static const char * const names[] = {
1258 [adt7473] = "ADT7473",
1259 [adt7475] = "ADT7475",
1260 [adt7476] = "ADT7476",
1261 [adt7490] = "ADT7490",
1264 struct adt7475_data *data;
1265 int i, ret = 0, revision;
1266 u8 config2, config3;
1268 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1272 mutex_init(&data->lock);
1273 i2c_set_clientdata(client, data);
1275 /* Initialize device-specific values */
1276 switch (id->driver_data) {
1278 data->has_voltage = 0x0e; /* in1 to in3 */
1279 revision = adt7475_read(REG_DEVID2) & 0x07;
1282 data->has_voltage = 0x3e; /* in1 to in5 */
1283 revision = adt7475_read(REG_DEVID2) & 0x03;
1284 if (revision == 0x03)
1285 revision += adt7475_read(REG_DEVREV2);
1288 data->has_voltage = 0x06; /* in1, in2 */
1289 revision = adt7475_read(REG_DEVID2) & 0x07;
1292 config3 = adt7475_read(REG_CONFIG3);
1293 /* Pin PWM2 may alternatively be used for ALERT output */
1294 if (!(config3 & CONFIG3_SMBALERT))
1296 /* Meaning of this bit is inverted for the ADT7473-1 */
1297 if (id->driver_data == adt7473 && revision >= 1)
1298 data->has_pwm2 = !data->has_pwm2;
1300 data->config4 = adt7475_read(REG_CONFIG4);
1301 /* Pin TACH4 may alternatively be used for THERM */
1302 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1306 * THERM configuration is more complex on the ADT7476 and ADT7490,
1307 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1310 if (id->driver_data == adt7490) {
1311 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1312 !(config3 & CONFIG3_THERM))
1315 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1316 if (!(config3 & CONFIG3_THERM) ||
1317 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1318 data->has_voltage |= (1 << 0); /* in0 */
1322 * On the ADT7476, the +12V input pin may instead be used as VID5,
1323 * and VID pins may alternatively be used as GPIO
1325 if (id->driver_data == adt7476) {
1326 u8 vid = adt7475_read(REG_VID);
1327 if (!(vid & VID_VIDSEL))
1328 data->has_voltage |= (1 << 4); /* in4 */
1330 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1333 /* Voltage attenuators can be bypassed, globally or individually */
1334 config2 = adt7475_read(REG_CONFIG2);
1335 if (config2 & CONFIG2_ATTN) {
1336 data->bypass_attn = (0x3 << 3) | 0x3;
1338 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1339 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1341 data->bypass_attn &= data->has_voltage;
1344 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1345 * pwm's which are disabled to manual mode with 0% duty cycle
1347 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1348 adt7475_read_pwm(client, i);
1350 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1354 /* Features that can be disabled individually */
1355 if (data->has_fan4) {
1356 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1360 if (data->has_pwm2) {
1361 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1365 if (data->has_voltage & (1 << 0)) {
1366 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1370 if (data->has_voltage & (1 << 3)) {
1371 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1375 if (data->has_voltage & (1 << 4)) {
1376 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1380 if (data->has_voltage & (1 << 5)) {
1381 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1385 if (data->has_vid) {
1386 data->vrm = vid_which_vrm();
1387 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1392 data->hwmon_dev = hwmon_device_register(&client->dev);
1393 if (IS_ERR(data->hwmon_dev)) {
1394 ret = PTR_ERR(data->hwmon_dev);
1398 dev_info(&client->dev, "%s device, revision %d\n",
1399 names[id->driver_data], revision);
1400 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1401 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1402 (data->has_voltage & (1 << 0)) ? " in0" : "",
1403 (data->has_voltage & (1 << 4)) ? " in4" : "",
1404 data->has_fan4 ? " fan4" : "",
1405 data->has_pwm2 ? " pwm2" : "",
1406 data->has_vid ? " vid" : "");
1407 if (data->bypass_attn)
1408 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1409 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1410 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1411 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1412 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1417 adt7475_remove_files(client, data);
1421 static int adt7475_remove(struct i2c_client *client)
1423 struct adt7475_data *data = i2c_get_clientdata(client);
1425 hwmon_device_unregister(data->hwmon_dev);
1426 adt7475_remove_files(client, data);
1431 static struct i2c_driver adt7475_driver = {
1432 .class = I2C_CLASS_HWMON,
1436 .probe = adt7475_probe,
1437 .remove = adt7475_remove,
1438 .id_table = adt7475_id,
1439 .detect = adt7475_detect,
1440 .address_list = normal_i2c,
1443 static void adt7475_read_hystersis(struct i2c_client *client)
1445 struct adt7475_data *data = i2c_get_clientdata(client);
1447 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1448 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1449 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1452 static void adt7475_read_pwm(struct i2c_client *client, int index)
1454 struct adt7475_data *data = i2c_get_clientdata(client);
1457 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1460 * Figure out the internal value for pwmctrl and pwmchan
1461 * based on the current settings
1463 v = (data->pwm[CONTROL][index] >> 5) & 7;
1466 data->pwmctl[index] = 0;
1468 data->pwmctl[index] = 1;
1471 * The fan is disabled - we don't want to
1472 * support that, so change to manual mode and
1473 * set the duty cycle to 0 instead
1475 data->pwm[INPUT][index] = 0;
1476 data->pwm[CONTROL][index] &= ~0xE0;
1477 data->pwm[CONTROL][index] |= (7 << 5);
1479 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1480 data->pwm[INPUT][index]);
1482 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1483 data->pwm[CONTROL][index]);
1485 data->pwmctl[index] = 1;
1487 data->pwmctl[index] = 2;
1491 data->pwmchan[index] = 1;
1494 data->pwmchan[index] = 2;
1497 data->pwmchan[index] = 4;
1500 data->pwmchan[index] = 6;
1503 data->pwmchan[index] = 7;
1509 static struct adt7475_data *adt7475_update_device(struct device *dev)
1511 struct i2c_client *client = to_i2c_client(dev);
1512 struct adt7475_data *data = i2c_get_clientdata(client);
1516 mutex_lock(&data->lock);
1518 /* Measurement values update every 2 seconds */
1519 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1521 data->alarms = adt7475_read(REG_STATUS2) << 8;
1522 data->alarms |= adt7475_read(REG_STATUS1);
1524 ext = (adt7475_read(REG_EXTEND2) << 8) |
1525 adt7475_read(REG_EXTEND1);
1526 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1527 if (!(data->has_voltage & (1 << i)))
1529 data->voltage[INPUT][i] =
1530 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1531 ((ext >> (i * 2)) & 3);
1534 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1535 data->temp[INPUT][i] =
1536 (adt7475_read(TEMP_REG(i)) << 2) |
1537 ((ext >> ((i + 5) * 2)) & 3);
1539 if (data->has_voltage & (1 << 5)) {
1540 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1541 ext = adt7475_read(REG_EXTEND3);
1542 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1546 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1547 if (i == 3 && !data->has_fan4)
1549 data->tach[INPUT][i] =
1550 adt7475_read_word(client, TACH_REG(i));
1553 /* Updated by hw when in auto mode */
1554 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1555 if (i == 1 && !data->has_pwm2)
1557 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1561 data->vid = adt7475_read(REG_VID) & 0x3f;
1563 data->measure_updated = jiffies;
1566 /* Limits and settings, should never change update every 60 seconds */
1567 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1569 data->config4 = adt7475_read(REG_CONFIG4);
1570 data->config5 = adt7475_read(REG_CONFIG5);
1572 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1573 if (!(data->has_voltage & (1 << i)))
1575 /* Adjust values so they match the input precision */
1576 data->voltage[MIN][i] =
1577 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1578 data->voltage[MAX][i] =
1579 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1582 if (data->has_voltage & (1 << 5)) {
1583 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1584 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1587 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1588 /* Adjust values so they match the input precision */
1589 data->temp[MIN][i] =
1590 adt7475_read(TEMP_MIN_REG(i)) << 2;
1591 data->temp[MAX][i] =
1592 adt7475_read(TEMP_MAX_REG(i)) << 2;
1593 data->temp[AUTOMIN][i] =
1594 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1595 data->temp[THERM][i] =
1596 adt7475_read(TEMP_THERM_REG(i)) << 2;
1597 data->temp[OFFSET][i] =
1598 adt7475_read(TEMP_OFFSET_REG(i));
1600 adt7475_read_hystersis(client);
1602 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1603 if (i == 3 && !data->has_fan4)
1605 data->tach[MIN][i] =
1606 adt7475_read_word(client, TACH_MIN_REG(i));
1609 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1610 if (i == 1 && !data->has_pwm2)
1612 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1613 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1614 /* Set the channel and control information */
1615 adt7475_read_pwm(client, i);
1618 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1619 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1620 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1622 data->limits_updated = jiffies;
1626 mutex_unlock(&data->lock);
1631 module_i2c_driver(adt7475_driver);
1633 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1634 MODULE_DESCRIPTION("adt7475 driver");
1635 MODULE_LICENSE("GPL");