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 <khali@linux-fr.org>
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/err.h>
23 /* Indexes for the sysfs hooks */
34 /* These are unique identifiers for the sysfs functions - unlike the
35 numbers above, these are not also indexes into an array
41 /* 7475 Common Registers */
43 #define REG_DEVREV2 0x12 /* ADT7490 only */
45 #define REG_VTT 0x1E /* ADT7490 only */
46 #define REG_EXTEND3 0x1F /* ADT7490 only */
48 #define REG_VOLTAGE_BASE 0x20
49 #define REG_TEMP_BASE 0x25
50 #define REG_TACH_BASE 0x28
51 #define REG_PWM_BASE 0x30
52 #define REG_PWM_MAX_BASE 0x38
54 #define REG_DEVID 0x3D
55 #define REG_VENDID 0x3E
56 #define REG_DEVID2 0x3F
58 #define REG_STATUS1 0x41
59 #define REG_STATUS2 0x42
61 #define REG_VOLTAGE_MIN_BASE 0x44
62 #define REG_VOLTAGE_MAX_BASE 0x45
64 #define REG_TEMP_MIN_BASE 0x4E
65 #define REG_TEMP_MAX_BASE 0x4F
67 #define REG_TACH_MIN_BASE 0x54
69 #define REG_PWM_CONFIG_BASE 0x5C
71 #define REG_TEMP_TRANGE_BASE 0x5F
73 #define REG_PWM_MIN_BASE 0x64
75 #define REG_TEMP_TMIN_BASE 0x67
76 #define REG_TEMP_THERM_BASE 0x6A
78 #define REG_REMOTE1_HYSTERSIS 0x6D
79 #define REG_REMOTE2_HYSTERSIS 0x6E
81 #define REG_TEMP_OFFSET_BASE 0x70
83 #define REG_CONFIG2 0x73
85 #define REG_EXTEND1 0x76
86 #define REG_EXTEND2 0x77
88 #define REG_CONFIG3 0x78
89 #define REG_CONFIG5 0x7C
90 #define REG_CONFIG4 0x7D
92 #define REG_STATUS4 0x81 /* ADT7490 only */
94 #define REG_VTT_MIN 0x84 /* ADT7490 only */
95 #define REG_VTT_MAX 0x86 /* ADT7490 only */
97 #define CONFIG2_ATTN 0x20
99 #define CONFIG3_SMBALERT 0x01
100 #define CONFIG3_THERM 0x02
102 #define CONFIG4_PINFUNC 0x03
103 #define CONFIG4_MAXDUTY 0x08
104 #define CONFIG4_ATTN_IN10 0x30
105 #define CONFIG4_ATTN_IN43 0xC0
107 #define CONFIG5_TWOSCOMP 0x01
108 #define CONFIG5_TEMPOFFSET 0x02
110 /* ADT7475 Settings */
112 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
113 #define ADT7475_TEMP_COUNT 3
114 #define ADT7475_TACH_COUNT 4
115 #define ADT7475_PWM_COUNT 3
117 /* Macro to read the registers */
119 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
121 /* Macros to easily index the registers */
123 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
124 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
126 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
127 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
128 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
129 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
131 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
132 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
133 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
135 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
136 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
137 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
138 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
139 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
140 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
141 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
143 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
145 I2C_CLIENT_INSMOD_3(adt7473, adt7475, adt7490);
147 static const struct i2c_device_id adt7475_id[] = {
148 { "adt7473", adt7473 },
149 { "adt7475", adt7475 },
150 { "adt7490", adt7490 },
153 MODULE_DEVICE_TABLE(i2c, adt7475_id);
155 struct adt7475_data {
156 struct device *hwmon_dev;
159 unsigned long measure_updated;
160 unsigned long limits_updated;
166 u8 bypass_attn; /* Bypass voltage attenuator */
179 static struct i2c_driver adt7475_driver;
180 static struct adt7475_data *adt7475_update_device(struct device *dev);
181 static void adt7475_read_hystersis(struct i2c_client *client);
182 static void adt7475_read_pwm(struct i2c_client *client, int index);
184 /* Given a temp value, convert it to register value */
186 static inline u16 temp2reg(struct adt7475_data *data, long val)
190 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
191 val = SENSORS_LIMIT(val, -64000, 191000);
192 ret = (val + 64500) / 1000;
194 val = SENSORS_LIMIT(val, -128000, 127000);
196 ret = (256500 + val) / 1000;
198 ret = (val + 500) / 1000;
204 /* Given a register value, convert it to a real temp value */
206 static inline int reg2temp(struct adt7475_data *data, u16 reg)
208 if (data->config5 & CONFIG5_TWOSCOMP) {
210 return (reg - 1024) * 250;
214 return (reg - 256) * 250;
217 static inline int tach2rpm(u16 tach)
219 if (tach == 0 || tach == 0xFFFF)
222 return (90000 * 60) / tach;
225 static inline u16 rpm2tach(unsigned long rpm)
230 return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
233 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
234 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
235 { 45, 94 }, /* +2.5V */
236 { 175, 525 }, /* Vccp */
237 { 68, 71 }, /* Vcc */
238 { 93, 47 }, /* +5V */
239 { 120, 20 }, /* +12V */
240 { 45, 45 }, /* Vtt */
243 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
245 const int *r = adt7473_in_scaling[channel];
247 if (bypass_attn & (1 << channel))
248 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
249 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
252 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
254 const int *r = adt7473_in_scaling[channel];
257 if (bypass_attn & (1 << channel))
258 reg = (volt * 1024) / 2250;
260 reg = (volt * r[1] * 1024) / ((r[0] + r[1]) * 2250);
261 return SENSORS_LIMIT(reg, 0, 1023) & (0xff << 2);
264 static u16 adt7475_read_word(struct i2c_client *client, int reg)
268 val = i2c_smbus_read_byte_data(client, reg);
269 val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
274 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
276 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
277 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
280 /* Find the nearest value in a table - used for pwm frequency and
282 static int find_nearest(long val, const int *array, int size)
289 if (val > array[size - 1])
292 for (i = 0; i < size - 1; i++) {
295 if (val > array[i + 1])
299 b = array[i + 1] - val;
301 return (a <= b) ? i : i + 1;
307 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
310 struct adt7475_data *data = adt7475_update_device(dev);
311 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
316 return sprintf(buf, "%d\n",
317 (data->alarms >> sattr->index) & 1);
319 val = data->voltage[sattr->nr][sattr->index];
320 return sprintf(buf, "%d\n",
321 reg2volt(sattr->index, val, data->bypass_attn));
325 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
326 const char *buf, size_t count)
329 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
330 struct i2c_client *client = to_i2c_client(dev);
331 struct adt7475_data *data = i2c_get_clientdata(client);
335 if (strict_strtol(buf, 10, &val))
338 mutex_lock(&data->lock);
340 data->voltage[sattr->nr][sattr->index] =
341 volt2reg(sattr->index, val, data->bypass_attn);
343 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
344 if (sattr->nr == MIN)
345 reg = VOLTAGE_MIN_REG(sattr->index);
347 reg = VOLTAGE_MAX_REG(sattr->index);
349 if (sattr->nr == MIN)
355 i2c_smbus_write_byte_data(client, reg,
356 data->voltage[sattr->nr][sattr->index] >> 2);
357 mutex_unlock(&data->lock);
362 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
365 struct adt7475_data *data = adt7475_update_device(dev);
366 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
371 mutex_lock(&data->lock);
372 out = data->temp[sattr->nr][sattr->index];
373 if (sattr->index != 1)
374 out = (out >> 4) & 0xF;
377 /* Show the value as an absolute number tied to
379 out = reg2temp(data, data->temp[THERM][sattr->index]) -
381 mutex_unlock(&data->lock);
385 /* Offset is always 2's complement, regardless of the
386 * setting in CONFIG5 */
387 mutex_lock(&data->lock);
388 out = (s8)data->temp[sattr->nr][sattr->index];
389 if (data->config5 & CONFIG5_TEMPOFFSET)
393 mutex_unlock(&data->lock);
397 out = (data->alarms >> (sattr->index + 4)) & 1;
401 /* Note - only for remote1 and remote2 */
402 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
406 /* All other temp values are in the configured format */
407 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
410 return sprintf(buf, "%d\n", out);
413 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
414 const char *buf, size_t count)
416 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
417 struct i2c_client *client = to_i2c_client(dev);
418 struct adt7475_data *data = i2c_get_clientdata(client);
419 unsigned char reg = 0;
424 if (strict_strtol(buf, 10, &val))
427 mutex_lock(&data->lock);
429 /* We need the config register in all cases for temp <-> reg conv. */
430 data->config5 = adt7475_read(REG_CONFIG5);
434 if (data->config5 & CONFIG5_TEMPOFFSET) {
435 val = SENSORS_LIMIT(val, -63000, 127000);
436 out = data->temp[OFFSET][sattr->index] = val / 1000;
438 val = SENSORS_LIMIT(val, -63000, 64000);
439 out = data->temp[OFFSET][sattr->index] = val / 500;
444 /* The value will be given as an absolute value, turn it
445 into an offset based on THERM */
447 /* Read fresh THERM and HYSTERSIS values from the chip */
448 data->temp[THERM][sattr->index] =
449 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
450 adt7475_read_hystersis(client);
452 temp = reg2temp(data, data->temp[THERM][sattr->index]);
453 val = SENSORS_LIMIT(val, temp - 15000, temp);
454 val = (temp - val) / 1000;
456 if (sattr->index != 1) {
457 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
458 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
460 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
461 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
464 out = data->temp[HYSTERSIS][sattr->index];
468 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
470 /* We maintain an extra 2 digits of precision for simplicity
471 * - shift those back off before writing the value */
472 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
477 reg = TEMP_MIN_REG(sattr->index);
480 reg = TEMP_MAX_REG(sattr->index);
483 reg = TEMP_OFFSET_REG(sattr->index);
486 reg = TEMP_TMIN_REG(sattr->index);
489 reg = TEMP_THERM_REG(sattr->index);
492 if (sattr->index != 2)
493 reg = REG_REMOTE1_HYSTERSIS;
495 reg = REG_REMOTE2_HYSTERSIS;
500 i2c_smbus_write_byte_data(client, reg, out);
502 mutex_unlock(&data->lock);
506 /* Table of autorange values - the user will write the value in millidegrees,
507 and we'll convert it */
508 static const int autorange_table[] = {
509 2000, 2500, 3330, 4000, 5000, 6670, 8000,
510 10000, 13330, 16000, 20000, 26670, 32000, 40000,
514 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
517 struct adt7475_data *data = adt7475_update_device(dev);
518 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
521 mutex_lock(&data->lock);
522 out = (data->range[sattr->index] >> 4) & 0x0F;
523 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
524 mutex_unlock(&data->lock);
526 return sprintf(buf, "%d\n", val + autorange_table[out]);
529 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
530 const char *buf, size_t count)
532 struct i2c_client *client = to_i2c_client(dev);
533 struct adt7475_data *data = i2c_get_clientdata(client);
534 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
538 if (strict_strtol(buf, 10, &val))
541 mutex_lock(&data->lock);
543 /* Get a fresh copy of the needed registers */
544 data->config5 = adt7475_read(REG_CONFIG5);
545 data->temp[AUTOMIN][sattr->index] =
546 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
547 data->range[sattr->index] =
548 adt7475_read(TEMP_TRANGE_REG(sattr->index));
550 /* The user will write an absolute value, so subtract the start point
551 to figure the range */
552 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
553 val = SENSORS_LIMIT(val, temp + autorange_table[0],
554 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
557 /* Find the nearest table entry to what the user wrote */
558 val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
560 data->range[sattr->index] &= ~0xF0;
561 data->range[sattr->index] |= val << 4;
563 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
564 data->range[sattr->index]);
566 mutex_unlock(&data->lock);
570 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
573 struct adt7475_data *data = adt7475_update_device(dev);
574 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
577 if (sattr->nr == ALARM)
578 out = (data->alarms >> (sattr->index + 10)) & 1;
580 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
582 return sprintf(buf, "%d\n", out);
585 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
586 const char *buf, size_t count)
589 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
590 struct i2c_client *client = to_i2c_client(dev);
591 struct adt7475_data *data = i2c_get_clientdata(client);
594 if (strict_strtoul(buf, 10, &val))
597 mutex_lock(&data->lock);
599 data->tach[MIN][sattr->index] = rpm2tach(val);
601 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
602 data->tach[MIN][sattr->index]);
604 mutex_unlock(&data->lock);
608 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
611 struct adt7475_data *data = adt7475_update_device(dev);
612 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
614 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
617 static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
620 struct adt7475_data *data = adt7475_update_device(dev);
621 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
623 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
626 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
629 struct adt7475_data *data = adt7475_update_device(dev);
630 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
632 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
635 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
636 const char *buf, size_t count)
639 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
640 struct i2c_client *client = to_i2c_client(dev);
641 struct adt7475_data *data = i2c_get_clientdata(client);
642 unsigned char reg = 0;
645 if (strict_strtol(buf, 10, &val))
648 mutex_lock(&data->lock);
652 /* Get a fresh value for CONTROL */
653 data->pwm[CONTROL][sattr->index] =
654 adt7475_read(PWM_CONFIG_REG(sattr->index));
656 /* If we are not in manual mode, then we shouldn't allow
657 * the user to set the pwm speed */
658 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
659 mutex_unlock(&data->lock);
663 reg = PWM_REG(sattr->index);
667 reg = PWM_MIN_REG(sattr->index);
671 reg = PWM_MAX_REG(sattr->index);
675 data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
676 i2c_smbus_write_byte_data(client, reg,
677 data->pwm[sattr->nr][sattr->index]);
679 mutex_unlock(&data->lock);
684 /* Called by set_pwmctrl and set_pwmchan */
686 static int hw_set_pwm(struct i2c_client *client, int index,
687 unsigned int pwmctl, unsigned int pwmchan)
689 struct adt7475_data *data = i2c_get_clientdata(client);
694 val = 0x03; /* Run at full speed */
697 val = 0x07; /* Manual mode */
702 /* Remote1 controls PWM */
706 /* local controls PWM */
710 /* remote2 controls PWM */
714 /* local/remote2 control PWM */
718 /* All three control PWM */
729 data->pwmctl[index] = pwmctl;
730 data->pwmchan[index] = pwmchan;
732 data->pwm[CONTROL][index] &= ~0xE0;
733 data->pwm[CONTROL][index] |= (val & 7) << 5;
735 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
736 data->pwm[CONTROL][index]);
741 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
742 const char *buf, size_t count)
744 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
745 struct i2c_client *client = to_i2c_client(dev);
746 struct adt7475_data *data = i2c_get_clientdata(client);
750 if (strict_strtol(buf, 10, &val))
753 mutex_lock(&data->lock);
754 /* Read Modify Write PWM values */
755 adt7475_read_pwm(client, sattr->index);
756 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
759 mutex_unlock(&data->lock);
764 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
765 const char *buf, size_t count)
767 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
768 struct i2c_client *client = to_i2c_client(dev);
769 struct adt7475_data *data = i2c_get_clientdata(client);
773 if (strict_strtol(buf, 10, &val))
776 mutex_lock(&data->lock);
777 /* Read Modify Write PWM values */
778 adt7475_read_pwm(client, sattr->index);
779 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
782 mutex_unlock(&data->lock);
787 /* List of frequencies for the PWM */
788 static const int pwmfreq_table[] = {
789 11, 14, 22, 29, 35, 44, 58, 88
792 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
795 struct adt7475_data *data = adt7475_update_device(dev);
796 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
798 return sprintf(buf, "%d\n",
799 pwmfreq_table[data->range[sattr->index] & 7]);
802 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
803 const char *buf, size_t count)
805 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
806 struct i2c_client *client = to_i2c_client(dev);
807 struct adt7475_data *data = i2c_get_clientdata(client);
811 if (strict_strtol(buf, 10, &val))
814 out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
816 mutex_lock(&data->lock);
818 data->range[sattr->index] =
819 adt7475_read(TEMP_TRANGE_REG(sattr->index));
820 data->range[sattr->index] &= ~7;
821 data->range[sattr->index] |= out;
823 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
824 data->range[sattr->index]);
826 mutex_unlock(&data->lock);
830 static ssize_t show_pwm_at_crit(struct device *dev,
831 struct device_attribute *devattr, char *buf)
833 struct adt7475_data *data = adt7475_update_device(dev);
834 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
837 static ssize_t set_pwm_at_crit(struct device *dev,
838 struct device_attribute *devattr,
839 const char *buf, size_t count)
841 struct i2c_client *client = to_i2c_client(dev);
842 struct adt7475_data *data = i2c_get_clientdata(client);
845 if (strict_strtol(buf, 10, &val))
847 if (val != 0 && val != 1)
850 mutex_lock(&data->lock);
851 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
853 data->config4 |= CONFIG4_MAXDUTY;
855 data->config4 &= ~CONFIG4_MAXDUTY;
856 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
857 mutex_unlock(&data->lock);
862 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
863 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
864 set_voltage, MAX, 0);
865 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
866 set_voltage, MIN, 0);
867 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
868 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
869 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
870 set_voltage, MAX, 1);
871 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
872 set_voltage, MIN, 1);
873 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
874 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
875 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
876 set_voltage, MAX, 2);
877 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
878 set_voltage, MIN, 2);
879 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
880 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
881 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
882 set_voltage, MAX, 3);
883 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
884 set_voltage, MIN, 3);
885 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
886 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
887 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
888 set_voltage, MAX, 4);
889 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
890 set_voltage, MIN, 4);
891 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
892 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
893 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
894 set_voltage, MAX, 5);
895 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
896 set_voltage, MIN, 5);
897 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
898 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
899 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
900 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
901 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
903 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
905 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
906 set_temp, OFFSET, 0);
907 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
908 show_temp, set_temp, AUTOMIN, 0);
909 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
910 show_point2, set_point2, 0, 0);
911 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
913 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
914 set_temp, HYSTERSIS, 0);
915 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
916 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
917 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
919 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
921 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
922 set_temp, OFFSET, 1);
923 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
924 show_temp, set_temp, AUTOMIN, 1);
925 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
926 show_point2, set_point2, 0, 1);
927 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
929 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
930 set_temp, HYSTERSIS, 1);
931 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
932 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
933 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
934 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
936 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
938 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
939 set_temp, OFFSET, 2);
940 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
941 show_temp, set_temp, AUTOMIN, 2);
942 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
943 show_point2, set_point2, 0, 2);
944 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
946 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
947 set_temp, HYSTERSIS, 2);
948 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
949 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
951 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
952 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
953 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
955 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
956 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
957 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
959 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
960 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
961 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
963 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
964 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
966 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
967 set_pwmfreq, INPUT, 0);
968 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
969 set_pwmctrl, INPUT, 0);
970 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
971 show_pwmchan, set_pwmchan, INPUT, 0);
972 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
974 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
976 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
978 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
979 set_pwmfreq, INPUT, 1);
980 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
981 set_pwmctrl, INPUT, 1);
982 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
983 show_pwmchan, set_pwmchan, INPUT, 1);
984 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
986 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
988 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
990 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
991 set_pwmfreq, INPUT, 2);
992 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
993 set_pwmctrl, INPUT, 2);
994 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
995 show_pwmchan, set_pwmchan, INPUT, 2);
996 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
998 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1001 /* Non-standard name, might need revisiting */
1002 static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
1003 show_pwm_at_crit, set_pwm_at_crit);
1005 static struct attribute *adt7475_attrs[] = {
1006 &sensor_dev_attr_in1_input.dev_attr.attr,
1007 &sensor_dev_attr_in1_max.dev_attr.attr,
1008 &sensor_dev_attr_in1_min.dev_attr.attr,
1009 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1010 &sensor_dev_attr_in2_input.dev_attr.attr,
1011 &sensor_dev_attr_in2_max.dev_attr.attr,
1012 &sensor_dev_attr_in2_min.dev_attr.attr,
1013 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1014 &sensor_dev_attr_temp1_input.dev_attr.attr,
1015 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1016 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1017 &sensor_dev_attr_temp1_max.dev_attr.attr,
1018 &sensor_dev_attr_temp1_min.dev_attr.attr,
1019 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1020 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1021 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1022 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1023 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1024 &sensor_dev_attr_temp2_input.dev_attr.attr,
1025 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1026 &sensor_dev_attr_temp2_max.dev_attr.attr,
1027 &sensor_dev_attr_temp2_min.dev_attr.attr,
1028 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1029 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1030 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1031 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1032 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1033 &sensor_dev_attr_temp3_input.dev_attr.attr,
1034 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1035 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1036 &sensor_dev_attr_temp3_max.dev_attr.attr,
1037 &sensor_dev_attr_temp3_min.dev_attr.attr,
1038 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1039 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1040 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1041 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1042 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1043 &sensor_dev_attr_fan1_input.dev_attr.attr,
1044 &sensor_dev_attr_fan1_min.dev_attr.attr,
1045 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1046 &sensor_dev_attr_fan2_input.dev_attr.attr,
1047 &sensor_dev_attr_fan2_min.dev_attr.attr,
1048 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1049 &sensor_dev_attr_fan3_input.dev_attr.attr,
1050 &sensor_dev_attr_fan3_min.dev_attr.attr,
1051 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1052 &sensor_dev_attr_pwm1.dev_attr.attr,
1053 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1054 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1055 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1056 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1057 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1058 &sensor_dev_attr_pwm3.dev_attr.attr,
1059 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1060 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1061 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1062 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1063 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1064 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1068 static struct attribute *fan4_attrs[] = {
1069 &sensor_dev_attr_fan4_input.dev_attr.attr,
1070 &sensor_dev_attr_fan4_min.dev_attr.attr,
1071 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1075 static struct attribute *pwm2_attrs[] = {
1076 &sensor_dev_attr_pwm2.dev_attr.attr,
1077 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1078 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1079 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1080 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1081 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1085 /* Attributes specific to the ADT7490 */
1086 static struct attribute *in0_attrs[] = {
1087 &sensor_dev_attr_in0_input.dev_attr.attr,
1088 &sensor_dev_attr_in0_max.dev_attr.attr,
1089 &sensor_dev_attr_in0_min.dev_attr.attr,
1090 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1094 static struct attribute *adt7490_attrs[] = {
1095 &sensor_dev_attr_in3_input.dev_attr.attr,
1096 &sensor_dev_attr_in3_max.dev_attr.attr,
1097 &sensor_dev_attr_in3_min.dev_attr.attr,
1098 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1099 &sensor_dev_attr_in4_input.dev_attr.attr,
1100 &sensor_dev_attr_in4_max.dev_attr.attr,
1101 &sensor_dev_attr_in4_min.dev_attr.attr,
1102 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1103 &sensor_dev_attr_in5_input.dev_attr.attr,
1104 &sensor_dev_attr_in5_max.dev_attr.attr,
1105 &sensor_dev_attr_in5_min.dev_attr.attr,
1106 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1110 static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1111 static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1112 static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1113 static struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1114 static struct attribute_group adt7490_attr_group = { .attrs = adt7490_attrs };
1116 static int adt7475_detect(struct i2c_client *client, int kind,
1117 struct i2c_board_info *info)
1119 struct i2c_adapter *adapter = client->adapter;
1120 int vendid, devid, devid2;
1123 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1126 vendid = adt7475_read(REG_VENDID);
1127 devid2 = adt7475_read(REG_DEVID2);
1128 if (vendid != 0x41 || /* Analog Devices */
1129 (devid2 & 0xf8) != 0x68)
1132 devid = adt7475_read(REG_DEVID);
1135 else if (devid == 0x75 && client->addr == 0x2e)
1137 else if ((devid2 & 0xfc) == 0x6c)
1140 dev_dbg(&adapter->dev,
1141 "Couldn't detect an ADT7473/75/90 part at "
1142 "0x%02x\n", (unsigned int)client->addr);
1146 strlcpy(info->type, name, I2C_NAME_SIZE);
1151 static void adt7475_remove_files(struct i2c_client *client,
1152 struct adt7475_data *data)
1154 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1155 if (data->has_voltage & 0x39)
1156 sysfs_remove_group(&client->dev.kobj, &adt7490_attr_group);
1158 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1160 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1161 if (data->has_voltage & (1 << 0))
1162 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1165 static int adt7475_probe(struct i2c_client *client,
1166 const struct i2c_device_id *id)
1168 static const char *names[] = {
1169 [adt7473] = "ADT7473",
1170 [adt7475] = "ADT7475",
1171 [adt7490] = "ADT7490",
1174 struct adt7475_data *data;
1175 int i, ret = 0, revision;
1176 u8 config2, config3;
1178 data = kzalloc(sizeof(*data), GFP_KERNEL);
1182 mutex_init(&data->lock);
1183 i2c_set_clientdata(client, data);
1185 /* Initialize device-specific values */
1186 switch (id->driver_data) {
1188 data->has_voltage = 0x3e; /* in1 to in5 */
1189 revision = adt7475_read(REG_DEVID2) & 0x03;
1190 if (revision == 0x03)
1191 revision += adt7475_read(REG_DEVREV2);
1194 data->has_voltage = 0x06; /* in1, in2 */
1195 revision = adt7475_read(REG_DEVID2) & 0x07;
1198 config3 = adt7475_read(REG_CONFIG3);
1199 /* Pin PWM2 may alternatively be used for ALERT output */
1200 if (!(config3 & CONFIG3_SMBALERT))
1202 /* Meaning of this bit is inverted for the ADT7473-1 */
1203 if (id->driver_data == adt7473 && revision >= 1)
1204 data->has_pwm2 = !data->has_pwm2;
1206 data->config4 = adt7475_read(REG_CONFIG4);
1207 /* Pin TACH4 may alternatively be used for THERM */
1208 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1211 /* THERM configuration is more complex on the ADT7490, because 2
1212 different pins (TACH4 and +2.5 Vin) can be used for this function */
1213 if (id->driver_data == adt7490) {
1214 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1215 !(config3 & CONFIG3_THERM))
1217 if (!(config3 & CONFIG3_THERM) ||
1218 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1219 data->has_voltage |= (1 << 0); /* in0 */
1222 /* Voltage attenuators can be bypassed, globally or individually */
1223 config2 = adt7475_read(REG_CONFIG2);
1224 if (config2 & CONFIG2_ATTN) {
1225 data->bypass_attn = (0x3 << 3) | 0x3;
1227 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1228 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1230 data->bypass_attn &= data->has_voltage;
1232 /* Call adt7475_read_pwm for all pwm's as this will reprogram any
1233 pwm's which are disabled to manual mode with 0% duty cycle */
1234 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1235 adt7475_read_pwm(client, i);
1237 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1241 if (id->driver_data == adt7490) {
1242 ret = sysfs_create_group(&client->dev.kobj,
1243 &adt7490_attr_group);
1248 /* Features that can be disabled individually */
1249 if (data->has_fan4) {
1250 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1254 if (data->has_pwm2) {
1255 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1259 if (data->has_voltage & (1 << 0)) {
1260 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1265 data->hwmon_dev = hwmon_device_register(&client->dev);
1266 if (IS_ERR(data->hwmon_dev)) {
1267 ret = PTR_ERR(data->hwmon_dev);
1271 dev_info(&client->dev, "%s device, revision %d\n",
1272 names[id->driver_data], revision);
1273 if ((data->has_voltage & (1 << 0)) || data->has_fan4 || data->has_pwm2)
1274 dev_info(&client->dev, "Optional features:%s%s%s\n",
1275 (data->has_voltage & (1 << 0)) ? " in0" : "",
1276 data->has_fan4 ? " fan4" : "",
1277 data->has_pwm2 ? " pwm2" : "");
1278 if (data->bypass_attn)
1279 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1280 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1281 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1282 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1283 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1288 adt7475_remove_files(client, data);
1294 static int adt7475_remove(struct i2c_client *client)
1296 struct adt7475_data *data = i2c_get_clientdata(client);
1298 hwmon_device_unregister(data->hwmon_dev);
1299 adt7475_remove_files(client, data);
1305 static struct i2c_driver adt7475_driver = {
1306 .class = I2C_CLASS_HWMON,
1310 .probe = adt7475_probe,
1311 .remove = adt7475_remove,
1312 .id_table = adt7475_id,
1313 .detect = adt7475_detect,
1314 .address_data = &addr_data,
1317 static void adt7475_read_hystersis(struct i2c_client *client)
1319 struct adt7475_data *data = i2c_get_clientdata(client);
1321 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1322 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1323 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1326 static void adt7475_read_pwm(struct i2c_client *client, int index)
1328 struct adt7475_data *data = i2c_get_clientdata(client);
1331 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1333 /* Figure out the internal value for pwmctrl and pwmchan
1334 based on the current settings */
1335 v = (data->pwm[CONTROL][index] >> 5) & 7;
1338 data->pwmctl[index] = 0;
1340 data->pwmctl[index] = 1;
1342 /* The fan is disabled - we don't want to
1343 support that, so change to manual mode and
1344 set the duty cycle to 0 instead
1346 data->pwm[INPUT][index] = 0;
1347 data->pwm[CONTROL][index] &= ~0xE0;
1348 data->pwm[CONTROL][index] |= (7 << 5);
1350 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1351 data->pwm[INPUT][index]);
1353 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1354 data->pwm[CONTROL][index]);
1356 data->pwmctl[index] = 1;
1358 data->pwmctl[index] = 2;
1362 data->pwmchan[index] = 1;
1365 data->pwmchan[index] = 2;
1368 data->pwmchan[index] = 4;
1371 data->pwmchan[index] = 6;
1374 data->pwmchan[index] = 7;
1380 static struct adt7475_data *adt7475_update_device(struct device *dev)
1382 struct i2c_client *client = to_i2c_client(dev);
1383 struct adt7475_data *data = i2c_get_clientdata(client);
1387 mutex_lock(&data->lock);
1389 /* Measurement values update every 2 seconds */
1390 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1392 data->alarms = adt7475_read(REG_STATUS2) << 8;
1393 data->alarms |= adt7475_read(REG_STATUS1);
1395 ext = (adt7475_read(REG_EXTEND2) << 8) |
1396 adt7475_read(REG_EXTEND1);
1397 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1398 if (!(data->has_voltage & (1 << i)))
1400 data->voltage[INPUT][i] =
1401 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1402 ((ext >> (i * 2)) & 3);
1405 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1406 data->temp[INPUT][i] =
1407 (adt7475_read(TEMP_REG(i)) << 2) |
1408 ((ext >> ((i + 5) * 2)) & 3);
1410 if (data->has_voltage & (1 << 5)) {
1411 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1412 ext = adt7475_read(REG_EXTEND3);
1413 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1417 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1418 if (i == 3 && !data->has_fan4)
1420 data->tach[INPUT][i] =
1421 adt7475_read_word(client, TACH_REG(i));
1424 /* Updated by hw when in auto mode */
1425 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1426 if (i == 1 && !data->has_pwm2)
1428 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1431 data->measure_updated = jiffies;
1434 /* Limits and settings, should never change update every 60 seconds */
1435 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1437 data->config4 = adt7475_read(REG_CONFIG4);
1438 data->config5 = adt7475_read(REG_CONFIG5);
1440 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1441 if (!(data->has_voltage & (1 << i)))
1443 /* Adjust values so they match the input precision */
1444 data->voltage[MIN][i] =
1445 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1446 data->voltage[MAX][i] =
1447 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1450 if (data->has_voltage & (1 << 5)) {
1451 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1452 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1455 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1456 /* Adjust values so they match the input precision */
1457 data->temp[MIN][i] =
1458 adt7475_read(TEMP_MIN_REG(i)) << 2;
1459 data->temp[MAX][i] =
1460 adt7475_read(TEMP_MAX_REG(i)) << 2;
1461 data->temp[AUTOMIN][i] =
1462 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1463 data->temp[THERM][i] =
1464 adt7475_read(TEMP_THERM_REG(i)) << 2;
1465 data->temp[OFFSET][i] =
1466 adt7475_read(TEMP_OFFSET_REG(i));
1468 adt7475_read_hystersis(client);
1470 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1471 if (i == 3 && !data->has_fan4)
1473 data->tach[MIN][i] =
1474 adt7475_read_word(client, TACH_MIN_REG(i));
1477 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1478 if (i == 1 && !data->has_pwm2)
1480 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1481 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1482 /* Set the channel and control information */
1483 adt7475_read_pwm(client, i);
1486 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1487 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1488 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1490 data->limits_updated = jiffies;
1494 mutex_unlock(&data->lock);
1499 static int __init sensors_adt7475_init(void)
1501 return i2c_add_driver(&adt7475_driver);
1504 static void __exit sensors_adt7475_exit(void)
1506 i2c_del_driver(&adt7475_driver);
1509 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1510 MODULE_DESCRIPTION("adt7475 driver");
1511 MODULE_LICENSE("GPL");
1513 module_init(sensors_adt7475_init);
1514 module_exit(sensors_adt7475_exit);