2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6 * Copyright (C) 2009 Jean Delvare <jdelvare@suse.de>
8 * Derived from the lm83 driver by Jean Delvare
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/of_device.h>
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/i2c.h>
20 #include <linux/hwmon.h>
21 #include <linux/hwmon-sysfs.h>
22 #include <linux/hwmon-vid.h>
23 #include <linux/err.h>
24 #include <linux/jiffies.h>
25 #include <linux/util_macros.h>
27 /* Indexes for the sysfs hooks */
39 * These are unique identifiers for the sysfs functions - unlike the
40 * numbers above, these are not also indexes into an array
46 /* 7475 Common Registers */
48 #define REG_DEVREV2 0x12 /* ADT7490 only */
50 #define REG_VTT 0x1E /* ADT7490 only */
51 #define REG_EXTEND3 0x1F /* ADT7490 only */
53 #define REG_VOLTAGE_BASE 0x20
54 #define REG_TEMP_BASE 0x25
55 #define REG_TACH_BASE 0x28
56 #define REG_PWM_BASE 0x30
57 #define REG_PWM_MAX_BASE 0x38
59 #define REG_DEVID 0x3D
60 #define REG_VENDID 0x3E
61 #define REG_DEVID2 0x3F
63 #define REG_CONFIG1 0x40
65 #define REG_STATUS1 0x41
66 #define REG_STATUS2 0x42
68 #define REG_VID 0x43 /* ADT7476 only */
70 #define REG_VOLTAGE_MIN_BASE 0x44
71 #define REG_VOLTAGE_MAX_BASE 0x45
73 #define REG_TEMP_MIN_BASE 0x4E
74 #define REG_TEMP_MAX_BASE 0x4F
76 #define REG_TACH_MIN_BASE 0x54
78 #define REG_PWM_CONFIG_BASE 0x5C
80 #define REG_TEMP_TRANGE_BASE 0x5F
82 #define REG_ENHANCE_ACOUSTICS1 0x62
83 #define REG_ENHANCE_ACOUSTICS2 0x63
85 #define REG_PWM_MIN_BASE 0x64
87 #define REG_TEMP_TMIN_BASE 0x67
88 #define REG_TEMP_THERM_BASE 0x6A
90 #define REG_REMOTE1_HYSTERSIS 0x6D
91 #define REG_REMOTE2_HYSTERSIS 0x6E
93 #define REG_TEMP_OFFSET_BASE 0x70
95 #define REG_CONFIG2 0x73
97 #define REG_EXTEND1 0x76
98 #define REG_EXTEND2 0x77
100 #define REG_CONFIG3 0x78
101 #define REG_CONFIG5 0x7C
102 #define REG_CONFIG4 0x7D
104 #define REG_STATUS4 0x81 /* ADT7490 only */
106 #define REG_VTT_MIN 0x84 /* ADT7490 only */
107 #define REG_VTT_MAX 0x86 /* ADT7490 only */
109 #define VID_VIDSEL 0x80 /* ADT7476 only */
111 #define CONFIG2_ATTN 0x20
113 #define CONFIG3_SMBALERT 0x01
114 #define CONFIG3_THERM 0x02
116 #define CONFIG4_PINFUNC 0x03
117 #define CONFIG4_MAXDUTY 0x08
118 #define CONFIG4_ATTN_IN10 0x30
119 #define CONFIG4_ATTN_IN43 0xC0
121 #define CONFIG5_TWOSCOMP 0x01
122 #define CONFIG5_TEMPOFFSET 0x02
123 #define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */
125 /* ADT7475 Settings */
127 #define ADT7475_VOLTAGE_COUNT 5 /* Not counting Vtt */
128 #define ADT7475_TEMP_COUNT 3
129 #define ADT7475_TACH_COUNT 4
130 #define ADT7475_PWM_COUNT 3
132 /* Macro to read the registers */
134 #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
136 /* Macros to easily index the registers */
138 #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
139 #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
141 #define PWM_REG(idx) (REG_PWM_BASE + (idx))
142 #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
143 #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
144 #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
146 #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
147 #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
148 #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
150 #define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
151 #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
152 #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
153 #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
154 #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
155 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
156 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
158 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
160 enum chips { adt7473, adt7475, adt7476, adt7490 };
162 static const struct i2c_device_id adt7475_id[] = {
163 { "adt7473", adt7473 },
164 { "adt7475", adt7475 },
165 { "adt7476", adt7476 },
166 { "adt7490", adt7490 },
169 MODULE_DEVICE_TABLE(i2c, adt7475_id);
171 static const struct of_device_id adt7475_of_match[] = {
173 .compatible = "adi,adt7473",
174 .data = (void *)adt7473
177 .compatible = "adi,adt7475",
178 .data = (void *)adt7475
181 .compatible = "adi,adt7476",
182 .data = (void *)adt7476
185 .compatible = "adi,adt7490",
186 .data = (void *)adt7490
190 MODULE_DEVICE_TABLE(of, adt7475_of_match);
192 struct adt7475_data {
193 struct device *hwmon_dev;
196 unsigned long measure_updated;
197 unsigned long limits_updated;
203 u8 bypass_attn; /* Bypass voltage attenuator */
221 static struct i2c_driver adt7475_driver;
222 static struct adt7475_data *adt7475_update_device(struct device *dev);
223 static void adt7475_read_hystersis(struct i2c_client *client);
224 static void adt7475_read_pwm(struct i2c_client *client, int index);
226 /* Given a temp value, convert it to register value */
228 static inline u16 temp2reg(struct adt7475_data *data, long val)
232 if (!(data->config5 & CONFIG5_TWOSCOMP)) {
233 val = clamp_val(val, -64000, 191000);
234 ret = (val + 64500) / 1000;
236 val = clamp_val(val, -128000, 127000);
238 ret = (256500 + val) / 1000;
240 ret = (val + 500) / 1000;
246 /* Given a register value, convert it to a real temp value */
248 static inline int reg2temp(struct adt7475_data *data, u16 reg)
250 if (data->config5 & CONFIG5_TWOSCOMP) {
252 return (reg - 1024) * 250;
256 return (reg - 256) * 250;
259 static inline int tach2rpm(u16 tach)
261 if (tach == 0 || tach == 0xFFFF)
264 return (90000 * 60) / tach;
267 static inline u16 rpm2tach(unsigned long rpm)
272 return clamp_val((90000 * 60) / rpm, 1, 0xFFFF);
275 /* Scaling factors for voltage inputs, taken from the ADT7490 datasheet */
276 static const int adt7473_in_scaling[ADT7475_VOLTAGE_COUNT + 1][2] = {
277 { 45, 94 }, /* +2.5V */
278 { 175, 525 }, /* Vccp */
279 { 68, 71 }, /* Vcc */
280 { 93, 47 }, /* +5V */
281 { 120, 20 }, /* +12V */
282 { 45, 45 }, /* Vtt */
285 static inline int reg2volt(int channel, u16 reg, u8 bypass_attn)
287 const int *r = adt7473_in_scaling[channel];
289 if (bypass_attn & (1 << channel))
290 return DIV_ROUND_CLOSEST(reg * 2250, 1024);
291 return DIV_ROUND_CLOSEST(reg * (r[0] + r[1]) * 2250, r[1] * 1024);
294 static inline u16 volt2reg(int channel, long volt, u8 bypass_attn)
296 const int *r = adt7473_in_scaling[channel];
299 if (bypass_attn & (1 << channel))
300 reg = DIV_ROUND_CLOSEST(volt * 1024, 2250);
302 reg = DIV_ROUND_CLOSEST(volt * r[1] * 1024,
303 (r[0] + r[1]) * 2250);
304 return clamp_val(reg, 0, 1023) & (0xff << 2);
307 static int adt7475_read_word(struct i2c_client *client, int reg)
311 val1 = i2c_smbus_read_byte_data(client, reg);
314 val2 = i2c_smbus_read_byte_data(client, reg + 1);
318 return val1 | (val2 << 8);
321 static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
323 i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
324 i2c_smbus_write_byte_data(client, reg, val & 0xFF);
327 static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
330 struct adt7475_data *data = adt7475_update_device(dev);
331 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
336 return sprintf(buf, "%d\n",
337 (data->alarms >> sattr->index) & 1);
339 val = data->voltage[sattr->nr][sattr->index];
340 return sprintf(buf, "%d\n",
341 reg2volt(sattr->index, val, data->bypass_attn));
345 static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
346 const char *buf, size_t count)
349 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
350 struct i2c_client *client = to_i2c_client(dev);
351 struct adt7475_data *data = i2c_get_clientdata(client);
355 if (kstrtol(buf, 10, &val))
358 mutex_lock(&data->lock);
360 data->voltage[sattr->nr][sattr->index] =
361 volt2reg(sattr->index, val, data->bypass_attn);
363 if (sattr->index < ADT7475_VOLTAGE_COUNT) {
364 if (sattr->nr == MIN)
365 reg = VOLTAGE_MIN_REG(sattr->index);
367 reg = VOLTAGE_MAX_REG(sattr->index);
369 if (sattr->nr == MIN)
375 i2c_smbus_write_byte_data(client, reg,
376 data->voltage[sattr->nr][sattr->index] >> 2);
377 mutex_unlock(&data->lock);
382 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
385 struct adt7475_data *data = adt7475_update_device(dev);
386 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
391 mutex_lock(&data->lock);
392 out = data->temp[sattr->nr][sattr->index];
393 if (sattr->index != 1)
394 out = (out >> 4) & 0xF;
398 * Show the value as an absolute number tied to
401 out = reg2temp(data, data->temp[THERM][sattr->index]) -
403 mutex_unlock(&data->lock);
408 * Offset is always 2's complement, regardless of the
411 mutex_lock(&data->lock);
412 out = (s8)data->temp[sattr->nr][sattr->index];
413 if (data->config5 & CONFIG5_TEMPOFFSET)
417 mutex_unlock(&data->lock);
421 out = (data->alarms >> (sattr->index + 4)) & 1;
425 /* Note - only for remote1 and remote2 */
426 out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000));
430 /* All other temp values are in the configured format */
431 out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
434 return sprintf(buf, "%d\n", out);
437 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
438 const char *buf, size_t count)
440 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
441 struct i2c_client *client = to_i2c_client(dev);
442 struct adt7475_data *data = i2c_get_clientdata(client);
443 unsigned char reg = 0;
448 if (kstrtol(buf, 10, &val))
451 mutex_lock(&data->lock);
453 /* We need the config register in all cases for temp <-> reg conv. */
454 data->config5 = adt7475_read(REG_CONFIG5);
458 if (data->config5 & CONFIG5_TEMPOFFSET) {
459 val = clamp_val(val, -63000, 127000);
460 out = data->temp[OFFSET][sattr->index] = val / 1000;
462 val = clamp_val(val, -63000, 64000);
463 out = data->temp[OFFSET][sattr->index] = val / 500;
469 * The value will be given as an absolute value, turn it
470 * into an offset based on THERM
473 /* Read fresh THERM and HYSTERSIS values from the chip */
474 data->temp[THERM][sattr->index] =
475 adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
476 adt7475_read_hystersis(client);
478 temp = reg2temp(data, data->temp[THERM][sattr->index]);
479 val = clamp_val(val, temp - 15000, temp);
480 val = (temp - val) / 1000;
482 if (sattr->index != 1) {
483 data->temp[HYSTERSIS][sattr->index] &= 0xF0;
484 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
486 data->temp[HYSTERSIS][sattr->index] &= 0x0F;
487 data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
490 out = data->temp[HYSTERSIS][sattr->index];
494 data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
497 * We maintain an extra 2 digits of precision for simplicity
498 * - shift those back off before writing the value
500 out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
505 reg = TEMP_MIN_REG(sattr->index);
508 reg = TEMP_MAX_REG(sattr->index);
511 reg = TEMP_OFFSET_REG(sattr->index);
514 reg = TEMP_TMIN_REG(sattr->index);
517 reg = TEMP_THERM_REG(sattr->index);
520 if (sattr->index != 2)
521 reg = REG_REMOTE1_HYSTERSIS;
523 reg = REG_REMOTE2_HYSTERSIS;
528 i2c_smbus_write_byte_data(client, reg, out);
530 mutex_unlock(&data->lock);
534 /* Assuming CONFIG6[SLOW] is 0 */
535 static const int ad7475_st_map[] = {
536 37500, 18800, 12500, 7500, 4700, 3100, 1600, 800,
539 static ssize_t show_temp_st(struct device *dev, struct device_attribute *attr,
542 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
543 struct i2c_client *client = to_i2c_client(dev);
544 struct adt7475_data *data = i2c_get_clientdata(client);
547 switch (sattr->index) {
549 val = data->enh_acoustics[0] & 0xf;
552 val = (data->enh_acoustics[1] >> 4) & 0xf;
556 val = data->enh_acoustics[1] & 0xf;
561 return sprintf(buf, "%d\n", ad7475_st_map[val & 0x7]);
563 return sprintf(buf, "0\n");
566 static ssize_t set_temp_st(struct device *dev, struct device_attribute *attr,
567 const char *buf, size_t count)
569 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
570 struct i2c_client *client = to_i2c_client(dev);
571 struct adt7475_data *data = i2c_get_clientdata(client);
576 if (kstrtoul(buf, 10, &val))
579 switch (sattr->index) {
581 reg = REG_ENHANCE_ACOUSTICS1;
586 reg = REG_ENHANCE_ACOUSTICS2;
592 reg = REG_ENHANCE_ACOUSTICS2;
599 val = find_closest_descending(val, ad7475_st_map,
600 ARRAY_SIZE(ad7475_st_map));
604 mutex_lock(&data->lock);
606 data->enh_acoustics[idx] &= ~(0xf << shift);
607 data->enh_acoustics[idx] |= (val << shift);
609 i2c_smbus_write_byte_data(client, reg, data->enh_acoustics[idx]);
611 mutex_unlock(&data->lock);
617 * Table of autorange values - the user will write the value in millidegrees,
618 * and we'll convert it
620 static const int autorange_table[] = {
621 2000, 2500, 3330, 4000, 5000, 6670, 8000,
622 10000, 13330, 16000, 20000, 26670, 32000, 40000,
626 static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
629 struct adt7475_data *data = adt7475_update_device(dev);
630 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
633 mutex_lock(&data->lock);
634 out = (data->range[sattr->index] >> 4) & 0x0F;
635 val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
636 mutex_unlock(&data->lock);
638 return sprintf(buf, "%d\n", val + autorange_table[out]);
641 static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
642 const char *buf, size_t count)
644 struct i2c_client *client = to_i2c_client(dev);
645 struct adt7475_data *data = i2c_get_clientdata(client);
646 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
650 if (kstrtol(buf, 10, &val))
653 mutex_lock(&data->lock);
655 /* Get a fresh copy of the needed registers */
656 data->config5 = adt7475_read(REG_CONFIG5);
657 data->temp[AUTOMIN][sattr->index] =
658 adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
659 data->range[sattr->index] =
660 adt7475_read(TEMP_TRANGE_REG(sattr->index));
663 * The user will write an absolute value, so subtract the start point
664 * to figure the range
666 temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
667 val = clamp_val(val, temp + autorange_table[0],
668 temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
671 /* Find the nearest table entry to what the user wrote */
672 val = find_closest(val, autorange_table, ARRAY_SIZE(autorange_table));
674 data->range[sattr->index] &= ~0xF0;
675 data->range[sattr->index] |= val << 4;
677 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
678 data->range[sattr->index]);
680 mutex_unlock(&data->lock);
684 static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
687 struct adt7475_data *data = adt7475_update_device(dev);
688 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
691 if (sattr->nr == ALARM)
692 out = (data->alarms >> (sattr->index + 10)) & 1;
694 out = tach2rpm(data->tach[sattr->nr][sattr->index]);
696 return sprintf(buf, "%d\n", out);
699 static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
700 const char *buf, size_t count)
703 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
704 struct i2c_client *client = to_i2c_client(dev);
705 struct adt7475_data *data = i2c_get_clientdata(client);
708 if (kstrtoul(buf, 10, &val))
711 mutex_lock(&data->lock);
713 data->tach[MIN][sattr->index] = rpm2tach(val);
715 adt7475_write_word(client, TACH_MIN_REG(sattr->index),
716 data->tach[MIN][sattr->index]);
718 mutex_unlock(&data->lock);
722 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
725 struct adt7475_data *data = adt7475_update_device(dev);
726 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
728 return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
731 static ssize_t show_pwmchan(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);
737 return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
740 static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
743 struct adt7475_data *data = adt7475_update_device(dev);
744 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
746 return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
749 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
750 const char *buf, size_t count)
753 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
754 struct i2c_client *client = to_i2c_client(dev);
755 struct adt7475_data *data = i2c_get_clientdata(client);
756 unsigned char reg = 0;
759 if (kstrtol(buf, 10, &val))
762 mutex_lock(&data->lock);
766 /* Get a fresh value for CONTROL */
767 data->pwm[CONTROL][sattr->index] =
768 adt7475_read(PWM_CONFIG_REG(sattr->index));
771 * If we are not in manual mode, then we shouldn't allow
772 * the user to set the pwm speed
774 if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
775 mutex_unlock(&data->lock);
779 reg = PWM_REG(sattr->index);
783 reg = PWM_MIN_REG(sattr->index);
787 reg = PWM_MAX_REG(sattr->index);
791 data->pwm[sattr->nr][sattr->index] = clamp_val(val, 0, 0xFF);
792 i2c_smbus_write_byte_data(client, reg,
793 data->pwm[sattr->nr][sattr->index]);
794 mutex_unlock(&data->lock);
799 static ssize_t show_stall_disable(struct device *dev,
800 struct device_attribute *attr, char *buf)
802 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
803 struct i2c_client *client = to_i2c_client(dev);
804 struct adt7475_data *data = i2c_get_clientdata(client);
805 u8 mask = BIT(5 + sattr->index);
807 return sprintf(buf, "%d\n", !!(data->enh_acoustics[0] & mask));
810 static ssize_t set_stall_disable(struct device *dev,
811 struct device_attribute *attr, const char *buf,
814 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
815 struct i2c_client *client = to_i2c_client(dev);
816 struct adt7475_data *data = i2c_get_clientdata(client);
818 u8 mask = BIT(5 + sattr->index);
820 if (kstrtol(buf, 10, &val))
823 mutex_lock(&data->lock);
825 data->enh_acoustics[0] &= ~mask;
827 data->enh_acoustics[0] |= mask;
829 i2c_smbus_write_byte_data(client, REG_ENHANCE_ACOUSTICS1,
830 data->enh_acoustics[0]);
832 mutex_unlock(&data->lock);
837 /* Called by set_pwmctrl and set_pwmchan */
839 static int hw_set_pwm(struct i2c_client *client, int index,
840 unsigned int pwmctl, unsigned int pwmchan)
842 struct adt7475_data *data = i2c_get_clientdata(client);
847 val = 0x03; /* Run at full speed */
850 val = 0x07; /* Manual mode */
855 /* Remote1 controls PWM */
859 /* local controls PWM */
863 /* remote2 controls PWM */
867 /* local/remote2 control PWM */
871 /* All three control PWM */
882 data->pwmctl[index] = pwmctl;
883 data->pwmchan[index] = pwmchan;
885 data->pwm[CONTROL][index] &= ~0xE0;
886 data->pwm[CONTROL][index] |= (val & 7) << 5;
888 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
889 data->pwm[CONTROL][index]);
894 static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
895 const char *buf, size_t count)
897 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
898 struct i2c_client *client = to_i2c_client(dev);
899 struct adt7475_data *data = i2c_get_clientdata(client);
903 if (kstrtol(buf, 10, &val))
906 mutex_lock(&data->lock);
907 /* Read Modify Write PWM values */
908 adt7475_read_pwm(client, sattr->index);
909 r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
912 mutex_unlock(&data->lock);
917 static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
918 const char *buf, size_t count)
920 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
921 struct i2c_client *client = to_i2c_client(dev);
922 struct adt7475_data *data = i2c_get_clientdata(client);
926 if (kstrtol(buf, 10, &val))
929 mutex_lock(&data->lock);
930 /* Read Modify Write PWM values */
931 adt7475_read_pwm(client, sattr->index);
932 r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
935 mutex_unlock(&data->lock);
940 /* List of frequencies for the PWM */
941 static const int pwmfreq_table[] = {
942 11, 14, 22, 29, 35, 44, 58, 88, 22500
945 static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
948 struct adt7475_data *data = adt7475_update_device(dev);
949 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
950 int i = clamp_val(data->range[sattr->index] & 0xf, 0,
951 ARRAY_SIZE(pwmfreq_table) - 1);
953 return sprintf(buf, "%d\n", pwmfreq_table[i]);
956 static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
957 const char *buf, size_t count)
959 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
960 struct i2c_client *client = to_i2c_client(dev);
961 struct adt7475_data *data = i2c_get_clientdata(client);
965 if (kstrtol(buf, 10, &val))
968 out = find_closest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
970 mutex_lock(&data->lock);
972 data->range[sattr->index] =
973 adt7475_read(TEMP_TRANGE_REG(sattr->index));
974 data->range[sattr->index] &= ~0xf;
975 data->range[sattr->index] |= out;
977 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
978 data->range[sattr->index]);
980 mutex_unlock(&data->lock);
984 static ssize_t pwm_use_point2_pwm_at_crit_show(struct device *dev,
985 struct device_attribute *devattr,
988 struct adt7475_data *data = adt7475_update_device(dev);
989 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
992 static ssize_t pwm_use_point2_pwm_at_crit_store(struct device *dev,
993 struct device_attribute *devattr,
994 const char *buf, size_t count)
996 struct i2c_client *client = to_i2c_client(dev);
997 struct adt7475_data *data = i2c_get_clientdata(client);
1000 if (kstrtol(buf, 10, &val))
1002 if (val != 0 && val != 1)
1005 mutex_lock(&data->lock);
1006 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
1008 data->config4 |= CONFIG4_MAXDUTY;
1010 data->config4 &= ~CONFIG4_MAXDUTY;
1011 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
1012 mutex_unlock(&data->lock);
1017 static ssize_t vrm_show(struct device *dev, struct device_attribute *devattr,
1020 struct adt7475_data *data = dev_get_drvdata(dev);
1021 return sprintf(buf, "%d\n", (int)data->vrm);
1024 static ssize_t vrm_store(struct device *dev, struct device_attribute *devattr,
1025 const char *buf, size_t count)
1027 struct adt7475_data *data = dev_get_drvdata(dev);
1030 if (kstrtol(buf, 10, &val))
1032 if (val < 0 || val > 255)
1039 static ssize_t cpu0_vid_show(struct device *dev,
1040 struct device_attribute *devattr, char *buf)
1042 struct adt7475_data *data = adt7475_update_device(dev);
1043 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1046 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
1047 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
1048 set_voltage, MAX, 0);
1049 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
1050 set_voltage, MIN, 0);
1051 static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
1052 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
1053 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
1054 set_voltage, MAX, 1);
1055 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
1056 set_voltage, MIN, 1);
1057 static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
1058 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 2);
1059 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
1060 set_voltage, MAX, 2);
1061 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
1062 set_voltage, MIN, 2);
1063 static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
1064 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
1065 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
1066 set_voltage, MAX, 3);
1067 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
1068 set_voltage, MIN, 3);
1069 static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
1070 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
1071 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
1072 set_voltage, MAX, 4);
1073 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
1074 set_voltage, MIN, 4);
1075 static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
1076 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
1077 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
1078 set_voltage, MAX, 5);
1079 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
1080 set_voltage, MIN, 5);
1081 static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
1082 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
1083 static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
1084 static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
1085 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1087 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1089 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1090 set_temp, OFFSET, 0);
1091 static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
1092 show_temp, set_temp, AUTOMIN, 0);
1093 static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
1094 show_point2, set_point2, 0, 0);
1095 static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1097 static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1098 set_temp, HYSTERSIS, 0);
1099 static SENSOR_DEVICE_ATTR_2(temp1_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1101 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
1102 static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
1103 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1105 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1107 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1108 set_temp, OFFSET, 1);
1109 static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
1110 show_temp, set_temp, AUTOMIN, 1);
1111 static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
1112 show_point2, set_point2, 0, 1);
1113 static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1115 static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1116 set_temp, HYSTERSIS, 1);
1117 static SENSOR_DEVICE_ATTR_2(temp2_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1119 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
1120 static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
1121 static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
1122 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1124 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1126 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1127 set_temp, OFFSET, 2);
1128 static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
1129 show_temp, set_temp, AUTOMIN, 2);
1130 static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
1131 show_point2, set_point2, 0, 2);
1132 static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
1134 static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
1135 set_temp, HYSTERSIS, 2);
1136 static SENSOR_DEVICE_ATTR_2(temp3_smoothing, S_IRUGO | S_IWUSR, show_temp_st,
1138 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
1139 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1141 static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
1142 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
1143 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1145 static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
1146 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
1147 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1149 static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
1150 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
1151 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
1153 static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
1154 static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1156 static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1157 set_pwmfreq, INPUT, 0);
1158 static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1159 set_pwmctrl, INPUT, 0);
1160 static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1161 show_pwmchan, set_pwmchan, INPUT, 0);
1162 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1164 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1166 static SENSOR_DEVICE_ATTR_2(pwm1_stall_disable, S_IRUGO | S_IWUSR,
1167 show_stall_disable, set_stall_disable, 0, 0);
1168 static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1170 static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1171 set_pwmfreq, INPUT, 1);
1172 static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1173 set_pwmctrl, INPUT, 1);
1174 static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1175 show_pwmchan, set_pwmchan, INPUT, 1);
1176 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1178 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1180 static SENSOR_DEVICE_ATTR_2(pwm2_stall_disable, S_IRUGO | S_IWUSR,
1181 show_stall_disable, set_stall_disable, 0, 1);
1182 static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
1184 static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
1185 set_pwmfreq, INPUT, 2);
1186 static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
1187 set_pwmctrl, INPUT, 2);
1188 static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1189 show_pwmchan, set_pwmchan, INPUT, 2);
1190 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
1192 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
1194 static SENSOR_DEVICE_ATTR_2(pwm3_stall_disable, S_IRUGO | S_IWUSR,
1195 show_stall_disable, set_stall_disable, 0, 2);
1197 /* Non-standard name, might need revisiting */
1198 static DEVICE_ATTR_RW(pwm_use_point2_pwm_at_crit);
1200 static DEVICE_ATTR_RW(vrm);
1201 static DEVICE_ATTR_RO(cpu0_vid);
1203 static struct attribute *adt7475_attrs[] = {
1204 &sensor_dev_attr_in1_input.dev_attr.attr,
1205 &sensor_dev_attr_in1_max.dev_attr.attr,
1206 &sensor_dev_attr_in1_min.dev_attr.attr,
1207 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1208 &sensor_dev_attr_in2_input.dev_attr.attr,
1209 &sensor_dev_attr_in2_max.dev_attr.attr,
1210 &sensor_dev_attr_in2_min.dev_attr.attr,
1211 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1212 &sensor_dev_attr_temp1_input.dev_attr.attr,
1213 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1214 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1215 &sensor_dev_attr_temp1_max.dev_attr.attr,
1216 &sensor_dev_attr_temp1_min.dev_attr.attr,
1217 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1218 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1219 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1220 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1221 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
1222 &sensor_dev_attr_temp1_smoothing.dev_attr.attr,
1223 &sensor_dev_attr_temp2_input.dev_attr.attr,
1224 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1225 &sensor_dev_attr_temp2_max.dev_attr.attr,
1226 &sensor_dev_attr_temp2_min.dev_attr.attr,
1227 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1228 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1229 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1230 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1231 &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
1232 &sensor_dev_attr_temp2_smoothing.dev_attr.attr,
1233 &sensor_dev_attr_temp3_input.dev_attr.attr,
1234 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1235 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1236 &sensor_dev_attr_temp3_max.dev_attr.attr,
1237 &sensor_dev_attr_temp3_min.dev_attr.attr,
1238 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1239 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1240 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1241 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1242 &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
1243 &sensor_dev_attr_temp3_smoothing.dev_attr.attr,
1244 &sensor_dev_attr_fan1_input.dev_attr.attr,
1245 &sensor_dev_attr_fan1_min.dev_attr.attr,
1246 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1247 &sensor_dev_attr_fan2_input.dev_attr.attr,
1248 &sensor_dev_attr_fan2_min.dev_attr.attr,
1249 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1250 &sensor_dev_attr_fan3_input.dev_attr.attr,
1251 &sensor_dev_attr_fan3_min.dev_attr.attr,
1252 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1253 &sensor_dev_attr_pwm1.dev_attr.attr,
1254 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1255 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1256 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1257 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1258 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1259 &sensor_dev_attr_pwm1_stall_disable.dev_attr.attr,
1260 &sensor_dev_attr_pwm3.dev_attr.attr,
1261 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1262 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1263 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1264 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1265 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1266 &sensor_dev_attr_pwm3_stall_disable.dev_attr.attr,
1267 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
1271 static struct attribute *fan4_attrs[] = {
1272 &sensor_dev_attr_fan4_input.dev_attr.attr,
1273 &sensor_dev_attr_fan4_min.dev_attr.attr,
1274 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1278 static struct attribute *pwm2_attrs[] = {
1279 &sensor_dev_attr_pwm2.dev_attr.attr,
1280 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1281 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1282 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1283 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1284 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1285 &sensor_dev_attr_pwm2_stall_disable.dev_attr.attr,
1289 static struct attribute *in0_attrs[] = {
1290 &sensor_dev_attr_in0_input.dev_attr.attr,
1291 &sensor_dev_attr_in0_max.dev_attr.attr,
1292 &sensor_dev_attr_in0_min.dev_attr.attr,
1293 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1297 static struct attribute *in3_attrs[] = {
1298 &sensor_dev_attr_in3_input.dev_attr.attr,
1299 &sensor_dev_attr_in3_max.dev_attr.attr,
1300 &sensor_dev_attr_in3_min.dev_attr.attr,
1301 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1305 static struct attribute *in4_attrs[] = {
1306 &sensor_dev_attr_in4_input.dev_attr.attr,
1307 &sensor_dev_attr_in4_max.dev_attr.attr,
1308 &sensor_dev_attr_in4_min.dev_attr.attr,
1309 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1313 static struct attribute *in5_attrs[] = {
1314 &sensor_dev_attr_in5_input.dev_attr.attr,
1315 &sensor_dev_attr_in5_max.dev_attr.attr,
1316 &sensor_dev_attr_in5_min.dev_attr.attr,
1317 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1321 static struct attribute *vid_attrs[] = {
1322 &dev_attr_cpu0_vid.attr,
1327 static const struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1328 static const struct attribute_group fan4_attr_group = { .attrs = fan4_attrs };
1329 static const struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs };
1330 static const struct attribute_group in0_attr_group = { .attrs = in0_attrs };
1331 static const struct attribute_group in3_attr_group = { .attrs = in3_attrs };
1332 static const struct attribute_group in4_attr_group = { .attrs = in4_attrs };
1333 static const struct attribute_group in5_attr_group = { .attrs = in5_attrs };
1334 static const struct attribute_group vid_attr_group = { .attrs = vid_attrs };
1336 static int adt7475_detect(struct i2c_client *client,
1337 struct i2c_board_info *info)
1339 struct i2c_adapter *adapter = client->adapter;
1340 int vendid, devid, devid2;
1343 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1346 vendid = adt7475_read(REG_VENDID);
1347 devid2 = adt7475_read(REG_DEVID2);
1348 if (vendid != 0x41 || /* Analog Devices */
1349 (devid2 & 0xf8) != 0x68)
1352 devid = adt7475_read(REG_DEVID);
1355 else if (devid == 0x75 && client->addr == 0x2e)
1357 else if (devid == 0x76)
1359 else if ((devid2 & 0xfc) == 0x6c)
1362 dev_dbg(&adapter->dev,
1363 "Couldn't detect an ADT7473/75/76/90 part at "
1364 "0x%02x\n", (unsigned int)client->addr);
1368 strlcpy(info->type, name, I2C_NAME_SIZE);
1373 static void adt7475_remove_files(struct i2c_client *client,
1374 struct adt7475_data *data)
1376 sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
1378 sysfs_remove_group(&client->dev.kobj, &fan4_attr_group);
1380 sysfs_remove_group(&client->dev.kobj, &pwm2_attr_group);
1381 if (data->has_voltage & (1 << 0))
1382 sysfs_remove_group(&client->dev.kobj, &in0_attr_group);
1383 if (data->has_voltage & (1 << 3))
1384 sysfs_remove_group(&client->dev.kobj, &in3_attr_group);
1385 if (data->has_voltage & (1 << 4))
1386 sysfs_remove_group(&client->dev.kobj, &in4_attr_group);
1387 if (data->has_voltage & (1 << 5))
1388 sysfs_remove_group(&client->dev.kobj, &in5_attr_group);
1390 sysfs_remove_group(&client->dev.kobj, &vid_attr_group);
1393 static int adt7475_probe(struct i2c_client *client,
1394 const struct i2c_device_id *id)
1397 static const char * const names[] = {
1398 [adt7473] = "ADT7473",
1399 [adt7475] = "ADT7475",
1400 [adt7476] = "ADT7476",
1401 [adt7490] = "ADT7490",
1404 struct adt7475_data *data;
1405 int i, ret = 0, revision;
1406 u8 config2, config3;
1408 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
1412 mutex_init(&data->lock);
1413 i2c_set_clientdata(client, data);
1415 if (client->dev.of_node)
1416 chip = (enum chips)of_device_get_match_data(&client->dev);
1418 chip = id->driver_data;
1420 /* Initialize device-specific values */
1423 data->has_voltage = 0x0e; /* in1 to in3 */
1424 revision = adt7475_read(REG_DEVID2) & 0x07;
1427 data->has_voltage = 0x3e; /* in1 to in5 */
1428 revision = adt7475_read(REG_DEVID2) & 0x03;
1429 if (revision == 0x03)
1430 revision += adt7475_read(REG_DEVREV2);
1433 data->has_voltage = 0x06; /* in1, in2 */
1434 revision = adt7475_read(REG_DEVID2) & 0x07;
1437 config3 = adt7475_read(REG_CONFIG3);
1438 /* Pin PWM2 may alternatively be used for ALERT output */
1439 if (!(config3 & CONFIG3_SMBALERT))
1441 /* Meaning of this bit is inverted for the ADT7473-1 */
1442 if (id->driver_data == adt7473 && revision >= 1)
1443 data->has_pwm2 = !data->has_pwm2;
1445 data->config4 = adt7475_read(REG_CONFIG4);
1446 /* Pin TACH4 may alternatively be used for THERM */
1447 if ((data->config4 & CONFIG4_PINFUNC) == 0x0)
1451 * THERM configuration is more complex on the ADT7476 and ADT7490,
1452 * because 2 different pins (TACH4 and +2.5 Vin) can be used for
1455 if (id->driver_data == adt7490) {
1456 if ((data->config4 & CONFIG4_PINFUNC) == 0x1 &&
1457 !(config3 & CONFIG3_THERM))
1460 if (id->driver_data == adt7476 || id->driver_data == adt7490) {
1461 if (!(config3 & CONFIG3_THERM) ||
1462 (data->config4 & CONFIG4_PINFUNC) == 0x1)
1463 data->has_voltage |= (1 << 0); /* in0 */
1467 * On the ADT7476, the +12V input pin may instead be used as VID5,
1468 * and VID pins may alternatively be used as GPIO
1470 if (id->driver_data == adt7476) {
1471 u8 vid = adt7475_read(REG_VID);
1472 if (!(vid & VID_VIDSEL))
1473 data->has_voltage |= (1 << 4); /* in4 */
1475 data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO);
1478 /* Voltage attenuators can be bypassed, globally or individually */
1479 config2 = adt7475_read(REG_CONFIG2);
1480 if (config2 & CONFIG2_ATTN) {
1481 data->bypass_attn = (0x3 << 3) | 0x3;
1483 data->bypass_attn = ((data->config4 & CONFIG4_ATTN_IN10) >> 4) |
1484 ((data->config4 & CONFIG4_ATTN_IN43) >> 3);
1486 data->bypass_attn &= data->has_voltage;
1489 * Call adt7475_read_pwm for all pwm's as this will reprogram any
1490 * pwm's which are disabled to manual mode with 0% duty cycle
1492 for (i = 0; i < ADT7475_PWM_COUNT; i++)
1493 adt7475_read_pwm(client, i);
1495 /* Start monitoring */
1499 i2c_smbus_write_byte_data(client, REG_CONFIG1,
1500 adt7475_read(REG_CONFIG1) | 0x01);
1506 ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
1510 /* Features that can be disabled individually */
1511 if (data->has_fan4) {
1512 ret = sysfs_create_group(&client->dev.kobj, &fan4_attr_group);
1516 if (data->has_pwm2) {
1517 ret = sysfs_create_group(&client->dev.kobj, &pwm2_attr_group);
1521 if (data->has_voltage & (1 << 0)) {
1522 ret = sysfs_create_group(&client->dev.kobj, &in0_attr_group);
1526 if (data->has_voltage & (1 << 3)) {
1527 ret = sysfs_create_group(&client->dev.kobj, &in3_attr_group);
1531 if (data->has_voltage & (1 << 4)) {
1532 ret = sysfs_create_group(&client->dev.kobj, &in4_attr_group);
1536 if (data->has_voltage & (1 << 5)) {
1537 ret = sysfs_create_group(&client->dev.kobj, &in5_attr_group);
1541 if (data->has_vid) {
1542 data->vrm = vid_which_vrm();
1543 ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group);
1548 data->hwmon_dev = hwmon_device_register(&client->dev);
1549 if (IS_ERR(data->hwmon_dev)) {
1550 ret = PTR_ERR(data->hwmon_dev);
1554 dev_info(&client->dev, "%s device, revision %d\n",
1555 names[id->driver_data], revision);
1556 if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2)
1557 dev_info(&client->dev, "Optional features:%s%s%s%s%s\n",
1558 (data->has_voltage & (1 << 0)) ? " in0" : "",
1559 (data->has_voltage & (1 << 4)) ? " in4" : "",
1560 data->has_fan4 ? " fan4" : "",
1561 data->has_pwm2 ? " pwm2" : "",
1562 data->has_vid ? " vid" : "");
1563 if (data->bypass_attn)
1564 dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n",
1565 (data->bypass_attn & (1 << 0)) ? " in0" : "",
1566 (data->bypass_attn & (1 << 1)) ? " in1" : "",
1567 (data->bypass_attn & (1 << 3)) ? " in3" : "",
1568 (data->bypass_attn & (1 << 4)) ? " in4" : "");
1573 adt7475_remove_files(client, data);
1577 static int adt7475_remove(struct i2c_client *client)
1579 struct adt7475_data *data = i2c_get_clientdata(client);
1581 hwmon_device_unregister(data->hwmon_dev);
1582 adt7475_remove_files(client, data);
1587 static struct i2c_driver adt7475_driver = {
1588 .class = I2C_CLASS_HWMON,
1591 .of_match_table = of_match_ptr(adt7475_of_match),
1593 .probe = adt7475_probe,
1594 .remove = adt7475_remove,
1595 .id_table = adt7475_id,
1596 .detect = adt7475_detect,
1597 .address_list = normal_i2c,
1600 static void adt7475_read_hystersis(struct i2c_client *client)
1602 struct adt7475_data *data = i2c_get_clientdata(client);
1604 data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
1605 data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
1606 data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
1609 static void adt7475_read_pwm(struct i2c_client *client, int index)
1611 struct adt7475_data *data = i2c_get_clientdata(client);
1614 data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
1617 * Figure out the internal value for pwmctrl and pwmchan
1618 * based on the current settings
1620 v = (data->pwm[CONTROL][index] >> 5) & 7;
1623 data->pwmctl[index] = 0;
1625 data->pwmctl[index] = 1;
1628 * The fan is disabled - we don't want to
1629 * support that, so change to manual mode and
1630 * set the duty cycle to 0 instead
1632 data->pwm[INPUT][index] = 0;
1633 data->pwm[CONTROL][index] &= ~0xE0;
1634 data->pwm[CONTROL][index] |= (7 << 5);
1636 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1637 data->pwm[INPUT][index]);
1639 i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
1640 data->pwm[CONTROL][index]);
1642 data->pwmctl[index] = 1;
1644 data->pwmctl[index] = 2;
1648 data->pwmchan[index] = 1;
1651 data->pwmchan[index] = 2;
1654 data->pwmchan[index] = 4;
1657 data->pwmchan[index] = 6;
1660 data->pwmchan[index] = 7;
1666 static struct adt7475_data *adt7475_update_device(struct device *dev)
1668 struct i2c_client *client = to_i2c_client(dev);
1669 struct adt7475_data *data = i2c_get_clientdata(client);
1673 mutex_lock(&data->lock);
1675 /* Measurement values update every 2 seconds */
1676 if (time_after(jiffies, data->measure_updated + HZ * 2) ||
1678 data->alarms = adt7475_read(REG_STATUS2) << 8;
1679 data->alarms |= adt7475_read(REG_STATUS1);
1681 ext = (adt7475_read(REG_EXTEND2) << 8) |
1682 adt7475_read(REG_EXTEND1);
1683 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1684 if (!(data->has_voltage & (1 << i)))
1686 data->voltage[INPUT][i] =
1687 (adt7475_read(VOLTAGE_REG(i)) << 2) |
1688 ((ext >> (i * 2)) & 3);
1691 for (i = 0; i < ADT7475_TEMP_COUNT; i++)
1692 data->temp[INPUT][i] =
1693 (adt7475_read(TEMP_REG(i)) << 2) |
1694 ((ext >> ((i + 5) * 2)) & 3);
1696 if (data->has_voltage & (1 << 5)) {
1697 data->alarms |= adt7475_read(REG_STATUS4) << 24;
1698 ext = adt7475_read(REG_EXTEND3);
1699 data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
1703 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1704 if (i == 3 && !data->has_fan4)
1706 data->tach[INPUT][i] =
1707 adt7475_read_word(client, TACH_REG(i));
1710 /* Updated by hw when in auto mode */
1711 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1712 if (i == 1 && !data->has_pwm2)
1714 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1718 data->vid = adt7475_read(REG_VID) & 0x3f;
1720 data->measure_updated = jiffies;
1723 /* Limits and settings, should never change update every 60 seconds */
1724 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1726 data->config4 = adt7475_read(REG_CONFIG4);
1727 data->config5 = adt7475_read(REG_CONFIG5);
1729 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1730 if (!(data->has_voltage & (1 << i)))
1732 /* Adjust values so they match the input precision */
1733 data->voltage[MIN][i] =
1734 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1735 data->voltage[MAX][i] =
1736 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
1739 if (data->has_voltage & (1 << 5)) {
1740 data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
1741 data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
1744 for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
1745 /* Adjust values so they match the input precision */
1746 data->temp[MIN][i] =
1747 adt7475_read(TEMP_MIN_REG(i)) << 2;
1748 data->temp[MAX][i] =
1749 adt7475_read(TEMP_MAX_REG(i)) << 2;
1750 data->temp[AUTOMIN][i] =
1751 adt7475_read(TEMP_TMIN_REG(i)) << 2;
1752 data->temp[THERM][i] =
1753 adt7475_read(TEMP_THERM_REG(i)) << 2;
1754 data->temp[OFFSET][i] =
1755 adt7475_read(TEMP_OFFSET_REG(i));
1757 adt7475_read_hystersis(client);
1759 for (i = 0; i < ADT7475_TACH_COUNT; i++) {
1760 if (i == 3 && !data->has_fan4)
1762 data->tach[MIN][i] =
1763 adt7475_read_word(client, TACH_MIN_REG(i));
1766 for (i = 0; i < ADT7475_PWM_COUNT; i++) {
1767 if (i == 1 && !data->has_pwm2)
1769 data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
1770 data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
1771 /* Set the channel and control information */
1772 adt7475_read_pwm(client, i);
1775 data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
1776 data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
1777 data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
1779 data->limits_updated = jiffies;
1783 mutex_unlock(&data->lock);
1788 module_i2c_driver(adt7475_driver);
1790 MODULE_AUTHOR("Advanced Micro Devices, Inc");
1791 MODULE_DESCRIPTION("adt7475 driver");
1792 MODULE_LICENSE("GPL");