2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
8 Copyright (C) 2007--2009 Jean Delvare <khali@linux-fr.org>
10 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <linux/jiffies.h>
31 #include <linux/i2c.h>
32 #include <linux/hwmon.h>
33 #include <linux/hwmon-vid.h>
34 #include <linux/hwmon-sysfs.h>
35 #include <linux/err.h>
36 #include <linux/mutex.h>
38 /* Addresses to scan */
39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
42 any_chip, lm85b, lm85c,
43 adm1027, adt7463, adt7468,
44 emc6d100, emc6d102, emc6d103
47 /* The LM85 registers */
49 #define LM85_REG_IN(nr) (0x20 + (nr))
50 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
51 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
53 #define LM85_REG_TEMP(nr) (0x25 + (nr))
54 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
55 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
57 /* Fan speeds are LSB, MSB (2 bytes) */
58 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
59 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
61 #define LM85_REG_PWM(nr) (0x30 + (nr))
63 #define LM85_REG_COMPANY 0x3e
64 #define LM85_REG_VERSTEP 0x3f
66 #define ADT7468_REG_CFG5 0x7c
67 #define ADT7468_OFF64 (1 << 0)
68 #define ADT7468_HFPWM (1 << 1)
69 #define IS_ADT7468_OFF64(data) \
70 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
71 #define IS_ADT7468_HFPWM(data) \
72 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
74 /* These are the recognized values for the above regs */
75 #define LM85_COMPANY_NATIONAL 0x01
76 #define LM85_COMPANY_ANALOG_DEV 0x41
77 #define LM85_COMPANY_SMSC 0x5c
78 #define LM85_VERSTEP_VMASK 0xf0
79 #define LM85_VERSTEP_GENERIC 0x60
80 #define LM85_VERSTEP_GENERIC2 0x70
81 #define LM85_VERSTEP_LM85C 0x60
82 #define LM85_VERSTEP_LM85B 0x62
83 #define LM85_VERSTEP_LM96000_1 0x68
84 #define LM85_VERSTEP_LM96000_2 0x69
85 #define LM85_VERSTEP_ADM1027 0x60
86 #define LM85_VERSTEP_ADT7463 0x62
87 #define LM85_VERSTEP_ADT7463C 0x6A
88 #define LM85_VERSTEP_ADT7468_1 0x71
89 #define LM85_VERSTEP_ADT7468_2 0x72
90 #define LM85_VERSTEP_EMC6D100_A0 0x60
91 #define LM85_VERSTEP_EMC6D100_A1 0x61
92 #define LM85_VERSTEP_EMC6D102 0x65
93 #define LM85_VERSTEP_EMC6D103_A0 0x68
94 #define LM85_VERSTEP_EMC6D103_A1 0x69
95 #define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
97 #define LM85_REG_CONFIG 0x40
99 #define LM85_REG_ALARM1 0x41
100 #define LM85_REG_ALARM2 0x42
102 #define LM85_REG_VID 0x43
104 /* Automated FAN control */
105 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
106 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
107 #define LM85_REG_AFAN_SPIKE1 0x62
108 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
109 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
110 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
111 #define LM85_REG_AFAN_HYST1 0x6d
112 #define LM85_REG_AFAN_HYST2 0x6e
114 #define ADM1027_REG_EXTEND_ADC1 0x76
115 #define ADM1027_REG_EXTEND_ADC2 0x77
117 #define EMC6D100_REG_ALARM3 0x7d
118 /* IN5, IN6 and IN7 */
119 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
120 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
121 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
122 #define EMC6D102_REG_EXTEND_ADC1 0x85
123 #define EMC6D102_REG_EXTEND_ADC2 0x86
124 #define EMC6D102_REG_EXTEND_ADC3 0x87
125 #define EMC6D102_REG_EXTEND_ADC4 0x88
128 /* Conversions. Rounding and limit checking is only done on the TO_REG
129 variants. Note that you should be a bit careful with which arguments
130 these macros are called: arguments may be evaluated more than once.
133 /* IN are scaled acording to built-in resistors */
134 static const int lm85_scaling[] = { /* .001 Volts */
135 2500, 2250, 3300, 5000, 12000,
136 3300, 1500, 1800 /*EMC6D100*/
138 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
140 #define INS_TO_REG(n, val) \
141 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
143 #define INSEXT_FROM_REG(n, val, ext) \
144 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
146 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
148 /* FAN speed is measured using 90kHz clock */
149 static inline u16 FAN_TO_REG(unsigned long val)
153 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
155 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
158 /* Temperature is reported in .001 degC increments */
159 #define TEMP_TO_REG(val) \
160 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
161 #define TEMPEXT_FROM_REG(val, ext) \
162 SCALE(((val) << 4) + (ext), 16, 1000)
163 #define TEMP_FROM_REG(val) ((val) * 1000)
165 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
166 #define PWM_FROM_REG(val) (val)
169 /* ZONEs have the following parameters:
170 * Limit (low) temp, 1. degC
171 * Hysteresis (below limit), 1. degC (0-15)
172 * Range of speed control, .1 degC (2-80)
173 * Critical (high) temp, 1. degC
175 * FAN PWMs have the following parameters:
176 * Reference Zone, 1, 2, 3, etc.
177 * Spinup time, .05 sec
178 * PWM value at limit/low temp, 1 count
179 * PWM Frequency, 1. Hz
180 * PWM is Min or OFF below limit, flag
181 * Invert PWM output, flag
183 * Some chips filter the temp, others the fan.
184 * Filter constant (or disabled) .1 seconds
187 /* These are the zone temperature range encodings in .001 degree C */
188 static const int lm85_range_map[] = {
189 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
190 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
193 static int RANGE_TO_REG(int range)
197 /* Find the closest match */
198 for (i = 0; i < 15; ++i) {
199 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
205 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
207 /* These are the PWM frequency encodings */
208 static const int lm85_freq_map[8] = { /* 1 Hz */
209 10, 15, 23, 30, 38, 47, 61, 94
211 static const int adm1027_freq_map[8] = { /* 1 Hz */
212 11, 15, 22, 29, 35, 44, 59, 88
215 static int FREQ_TO_REG(const int *map, int freq)
219 /* Find the closest match */
220 for (i = 0; i < 7; ++i)
221 if (freq <= (map[i] + map[i + 1]) / 2)
226 static int FREQ_FROM_REG(const int *map, u8 reg)
228 return map[reg & 0x07];
231 /* Since we can't use strings, I'm abusing these numbers
232 * to stand in for the following meanings:
233 * 1 -- PWM responds to Zone 1
234 * 2 -- PWM responds to Zone 2
235 * 3 -- PWM responds to Zone 3
236 * 23 -- PWM responds to the higher temp of Zone 2 or 3
237 * 123 -- PWM responds to highest of Zone 1, 2, or 3
238 * 0 -- PWM is always at 0% (ie, off)
239 * -1 -- PWM is always at 100%
240 * -2 -- PWM responds to manual control
243 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
244 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
246 static int ZONE_TO_REG(int zone)
250 for (i = 0; i <= 7; ++i)
251 if (zone == lm85_zone_map[i])
253 if (i > 7) /* Not found. */
254 i = 3; /* Always 100% */
258 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
259 #define HYST_FROM_REG(val) ((val) * 1000)
261 /* Chip sampling rates
263 * Some sensors are not updated more frequently than once per second
264 * so it doesn't make sense to read them more often than that.
265 * We cache the results and return the saved data if the driver
266 * is called again before a second has elapsed.
268 * Also, there is significant configuration data for this chip
269 * given the automatic PWM fan control that is possible. There
270 * are about 47 bytes of config data to only 22 bytes of actual
271 * readings. So, we keep the config data up to date in the cache
272 * when it is written and only sample it once every 1 *minute*
274 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
275 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
277 /* LM85 can automatically adjust fan speeds based on temperature
278 * This structure encapsulates an entire Zone config. There are
279 * three zones (one for each temperature input) on the lm85
282 s8 limit; /* Low temp limit */
283 u8 hyst; /* Low limit hysteresis. (0-15) */
284 u8 range; /* Temp range, encoded */
285 s8 critical; /* "All fans ON" temp limit */
286 u8 max_desired; /* Actual "max" temperature specified. Preserved
287 * to prevent "drift" as other autofan control
292 struct lm85_autofan {
293 u8 config; /* Register value */
294 u8 min_pwm; /* Minimum PWM value, encoded */
295 u8 min_off; /* Min PWM or OFF below "limit", flag */
298 /* For each registered chip, we need to keep some data in memory.
299 The structure is dynamically allocated. */
301 struct device *hwmon_dev;
305 bool has_vid5; /* true if VID5 is configured for ADT7463 or ADT7468 */
307 struct mutex update_lock;
308 int valid; /* !=0 if following fields are valid */
309 unsigned long last_reading; /* In jiffies */
310 unsigned long last_config; /* In jiffies */
312 u8 in[8]; /* Register value */
313 u8 in_max[8]; /* Register value */
314 u8 in_min[8]; /* Register value */
315 s8 temp[3]; /* Register value */
316 s8 temp_min[3]; /* Register value */
317 s8 temp_max[3]; /* Register value */
318 u16 fan[4]; /* Register value */
319 u16 fan_min[4]; /* Register value */
320 u8 pwm[3]; /* Register value */
321 u8 pwm_freq[3]; /* Register encoding */
322 u8 temp_ext[3]; /* Decoded values */
323 u8 in_ext[8]; /* Decoded values */
324 u8 vid; /* Register value */
325 u8 vrm; /* VRM version */
326 u32 alarms; /* Register encoding, combined */
327 u8 cfg5; /* Config Register 5 on ADT7468 */
328 struct lm85_autofan autofan[3];
329 struct lm85_zone zone[3];
332 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info);
333 static int lm85_probe(struct i2c_client *client,
334 const struct i2c_device_id *id);
335 static int lm85_remove(struct i2c_client *client);
337 static int lm85_read_value(struct i2c_client *client, u8 reg);
338 static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
339 static struct lm85_data *lm85_update_device(struct device *dev);
342 static const struct i2c_device_id lm85_id[] = {
343 { "adm1027", adm1027 },
344 { "adt7463", adt7463 },
345 { "adt7468", adt7468 },
346 { "lm85", any_chip },
349 { "emc6d100", emc6d100 },
350 { "emc6d101", emc6d100 },
351 { "emc6d102", emc6d102 },
352 { "emc6d103", emc6d103 },
355 MODULE_DEVICE_TABLE(i2c, lm85_id);
357 static struct i2c_driver lm85_driver = {
358 .class = I2C_CLASS_HWMON,
363 .remove = lm85_remove,
365 .detect = lm85_detect,
366 .address_list = normal_i2c,
371 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
374 int nr = to_sensor_dev_attr(attr)->index;
375 struct lm85_data *data = lm85_update_device(dev);
376 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
379 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
382 int nr = to_sensor_dev_attr(attr)->index;
383 struct lm85_data *data = lm85_update_device(dev);
384 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
387 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
388 const char *buf, size_t count)
390 int nr = to_sensor_dev_attr(attr)->index;
391 struct i2c_client *client = to_i2c_client(dev);
392 struct lm85_data *data = i2c_get_clientdata(client);
393 unsigned long val = simple_strtoul(buf, NULL, 10);
395 mutex_lock(&data->update_lock);
396 data->fan_min[nr] = FAN_TO_REG(val);
397 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
398 mutex_unlock(&data->update_lock);
402 #define show_fan_offset(offset) \
403 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
404 show_fan, NULL, offset - 1); \
405 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
406 show_fan_min, set_fan_min, offset - 1)
413 /* vid, vrm, alarms */
415 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
418 struct lm85_data *data = lm85_update_device(dev);
421 if (data->has_vid5) {
422 /* 6-pin VID (VRM 10) */
423 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
425 /* 5-pin VID (VRM 9) */
426 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
429 return sprintf(buf, "%d\n", vid);
432 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
434 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
437 struct lm85_data *data = dev_get_drvdata(dev);
438 return sprintf(buf, "%ld\n", (long) data->vrm);
441 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
442 const char *buf, size_t count)
444 struct lm85_data *data = dev_get_drvdata(dev);
445 data->vrm = simple_strtoul(buf, NULL, 10);
449 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
451 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
454 struct lm85_data *data = lm85_update_device(dev);
455 return sprintf(buf, "%u\n", data->alarms);
458 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
460 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
463 int nr = to_sensor_dev_attr(attr)->index;
464 struct lm85_data *data = lm85_update_device(dev);
465 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
468 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
469 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
470 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
471 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
472 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
473 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
474 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
475 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
476 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
477 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
478 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
479 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
480 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
481 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
482 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
483 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
484 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
488 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
491 int nr = to_sensor_dev_attr(attr)->index;
492 struct lm85_data *data = lm85_update_device(dev);
493 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
496 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
497 const char *buf, size_t count)
499 int nr = to_sensor_dev_attr(attr)->index;
500 struct i2c_client *client = to_i2c_client(dev);
501 struct lm85_data *data = i2c_get_clientdata(client);
502 long val = simple_strtol(buf, NULL, 10);
504 mutex_lock(&data->update_lock);
505 data->pwm[nr] = PWM_TO_REG(val);
506 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
507 mutex_unlock(&data->update_lock);
511 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
514 int nr = to_sensor_dev_attr(attr)->index;
515 struct lm85_data *data = lm85_update_device(dev);
516 int pwm_zone, enable;
518 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
520 case -1: /* PWM is always at 100% */
523 case 0: /* PWM is always at 0% */
524 case -2: /* PWM responds to manual control */
527 default: /* PWM in automatic mode */
530 return sprintf(buf, "%d\n", enable);
533 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
534 *attr, const char *buf, size_t count)
536 int nr = to_sensor_dev_attr(attr)->index;
537 struct i2c_client *client = to_i2c_client(dev);
538 struct lm85_data *data = i2c_get_clientdata(client);
539 long val = simple_strtol(buf, NULL, 10);
550 /* Here we have to choose arbitrarily one of the 5 possible
551 configurations; I go for the safest */
558 mutex_lock(&data->update_lock);
559 data->autofan[nr].config = lm85_read_value(client,
560 LM85_REG_AFAN_CONFIG(nr));
561 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
563 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
564 data->autofan[nr].config);
565 mutex_unlock(&data->update_lock);
569 static ssize_t show_pwm_freq(struct device *dev,
570 struct device_attribute *attr, char *buf)
572 int nr = to_sensor_dev_attr(attr)->index;
573 struct lm85_data *data = lm85_update_device(dev);
576 if (IS_ADT7468_HFPWM(data))
579 freq = FREQ_FROM_REG(data->freq_map, data->pwm_freq[nr]);
581 return sprintf(buf, "%d\n", freq);
584 static ssize_t set_pwm_freq(struct device *dev,
585 struct device_attribute *attr, const char *buf, size_t count)
587 int nr = to_sensor_dev_attr(attr)->index;
588 struct i2c_client *client = to_i2c_client(dev);
589 struct lm85_data *data = i2c_get_clientdata(client);
590 long val = simple_strtol(buf, NULL, 10);
592 mutex_lock(&data->update_lock);
593 /* The ADT7468 has a special high-frequency PWM output mode,
594 * where all PWM outputs are driven by a 22.5 kHz clock.
595 * This might confuse the user, but there's not much we can do. */
596 if (data->type == adt7468 && val >= 11300) { /* High freq. mode */
597 data->cfg5 &= ~ADT7468_HFPWM;
598 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
599 } else { /* Low freq. mode */
600 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
601 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
602 (data->zone[nr].range << 4)
603 | data->pwm_freq[nr]);
604 if (data->type == adt7468) {
605 data->cfg5 |= ADT7468_HFPWM;
606 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
609 mutex_unlock(&data->update_lock);
613 #define show_pwm_reg(offset) \
614 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
615 show_pwm, set_pwm, offset - 1); \
616 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
617 show_pwm_enable, set_pwm_enable, offset - 1); \
618 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
619 show_pwm_freq, set_pwm_freq, offset - 1)
627 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
630 int nr = to_sensor_dev_attr(attr)->index;
631 struct lm85_data *data = lm85_update_device(dev);
632 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
636 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
639 int nr = to_sensor_dev_attr(attr)->index;
640 struct lm85_data *data = lm85_update_device(dev);
641 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
644 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
645 const char *buf, size_t count)
647 int nr = to_sensor_dev_attr(attr)->index;
648 struct i2c_client *client = to_i2c_client(dev);
649 struct lm85_data *data = i2c_get_clientdata(client);
650 long val = simple_strtol(buf, NULL, 10);
652 mutex_lock(&data->update_lock);
653 data->in_min[nr] = INS_TO_REG(nr, val);
654 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
655 mutex_unlock(&data->update_lock);
659 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
662 int nr = to_sensor_dev_attr(attr)->index;
663 struct lm85_data *data = lm85_update_device(dev);
664 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
667 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
668 const char *buf, size_t count)
670 int nr = to_sensor_dev_attr(attr)->index;
671 struct i2c_client *client = to_i2c_client(dev);
672 struct lm85_data *data = i2c_get_clientdata(client);
673 long val = simple_strtol(buf, NULL, 10);
675 mutex_lock(&data->update_lock);
676 data->in_max[nr] = INS_TO_REG(nr, val);
677 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
678 mutex_unlock(&data->update_lock);
682 #define show_in_reg(offset) \
683 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
684 show_in, NULL, offset); \
685 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
686 show_in_min, set_in_min, offset); \
687 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
688 show_in_max, set_in_max, offset)
701 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
704 int nr = to_sensor_dev_attr(attr)->index;
705 struct lm85_data *data = lm85_update_device(dev);
706 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
707 data->temp_ext[nr]));
710 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
713 int nr = to_sensor_dev_attr(attr)->index;
714 struct lm85_data *data = lm85_update_device(dev);
715 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
718 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
719 const char *buf, size_t count)
721 int nr = to_sensor_dev_attr(attr)->index;
722 struct i2c_client *client = to_i2c_client(dev);
723 struct lm85_data *data = i2c_get_clientdata(client);
724 long val = simple_strtol(buf, NULL, 10);
726 if (IS_ADT7468_OFF64(data))
729 mutex_lock(&data->update_lock);
730 data->temp_min[nr] = TEMP_TO_REG(val);
731 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
732 mutex_unlock(&data->update_lock);
736 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
739 int nr = to_sensor_dev_attr(attr)->index;
740 struct lm85_data *data = lm85_update_device(dev);
741 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
744 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
745 const char *buf, size_t count)
747 int nr = to_sensor_dev_attr(attr)->index;
748 struct i2c_client *client = to_i2c_client(dev);
749 struct lm85_data *data = i2c_get_clientdata(client);
750 long val = simple_strtol(buf, NULL, 10);
752 if (IS_ADT7468_OFF64(data))
755 mutex_lock(&data->update_lock);
756 data->temp_max[nr] = TEMP_TO_REG(val);
757 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
758 mutex_unlock(&data->update_lock);
762 #define show_temp_reg(offset) \
763 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
764 show_temp, NULL, offset - 1); \
765 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
766 show_temp_min, set_temp_min, offset - 1); \
767 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
768 show_temp_max, set_temp_max, offset - 1);
775 /* Automatic PWM control */
777 static ssize_t show_pwm_auto_channels(struct device *dev,
778 struct device_attribute *attr, char *buf)
780 int nr = to_sensor_dev_attr(attr)->index;
781 struct lm85_data *data = lm85_update_device(dev);
782 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
785 static ssize_t set_pwm_auto_channels(struct device *dev,
786 struct device_attribute *attr, const char *buf, size_t count)
788 int nr = to_sensor_dev_attr(attr)->index;
789 struct i2c_client *client = to_i2c_client(dev);
790 struct lm85_data *data = i2c_get_clientdata(client);
791 long val = simple_strtol(buf, NULL, 10);
793 mutex_lock(&data->update_lock);
794 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
796 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
797 data->autofan[nr].config);
798 mutex_unlock(&data->update_lock);
802 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
803 struct device_attribute *attr, char *buf)
805 int nr = to_sensor_dev_attr(attr)->index;
806 struct lm85_data *data = lm85_update_device(dev);
807 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
810 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
811 struct device_attribute *attr, const char *buf, size_t count)
813 int nr = to_sensor_dev_attr(attr)->index;
814 struct i2c_client *client = to_i2c_client(dev);
815 struct lm85_data *data = i2c_get_clientdata(client);
816 long val = simple_strtol(buf, NULL, 10);
818 mutex_lock(&data->update_lock);
819 data->autofan[nr].min_pwm = PWM_TO_REG(val);
820 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
821 data->autofan[nr].min_pwm);
822 mutex_unlock(&data->update_lock);
826 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
827 struct device_attribute *attr, char *buf)
829 int nr = to_sensor_dev_attr(attr)->index;
830 struct lm85_data *data = lm85_update_device(dev);
831 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
834 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
835 struct device_attribute *attr, const char *buf, size_t count)
837 int nr = to_sensor_dev_attr(attr)->index;
838 struct i2c_client *client = to_i2c_client(dev);
839 struct lm85_data *data = i2c_get_clientdata(client);
840 long val = simple_strtol(buf, NULL, 10);
843 mutex_lock(&data->update_lock);
844 data->autofan[nr].min_off = val;
845 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
846 tmp &= ~(0x20 << nr);
847 if (data->autofan[nr].min_off)
849 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
850 mutex_unlock(&data->update_lock);
854 #define pwm_auto(offset) \
855 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
856 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
857 set_pwm_auto_channels, offset - 1); \
858 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
859 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
860 set_pwm_auto_pwm_min, offset - 1); \
861 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
862 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
863 set_pwm_auto_pwm_minctl, offset - 1)
869 /* Temperature settings for automatic PWM control */
871 static ssize_t show_temp_auto_temp_off(struct device *dev,
872 struct device_attribute *attr, char *buf)
874 int nr = to_sensor_dev_attr(attr)->index;
875 struct lm85_data *data = lm85_update_device(dev);
876 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
877 HYST_FROM_REG(data->zone[nr].hyst));
880 static ssize_t set_temp_auto_temp_off(struct device *dev,
881 struct device_attribute *attr, const char *buf, size_t count)
883 int nr = to_sensor_dev_attr(attr)->index;
884 struct i2c_client *client = to_i2c_client(dev);
885 struct lm85_data *data = i2c_get_clientdata(client);
887 long val = simple_strtol(buf, NULL, 10);
889 mutex_lock(&data->update_lock);
890 min = TEMP_FROM_REG(data->zone[nr].limit);
891 data->zone[nr].hyst = HYST_TO_REG(min - val);
892 if (nr == 0 || nr == 1) {
893 lm85_write_value(client, LM85_REG_AFAN_HYST1,
894 (data->zone[0].hyst << 4)
895 | data->zone[1].hyst);
897 lm85_write_value(client, LM85_REG_AFAN_HYST2,
898 (data->zone[2].hyst << 4));
900 mutex_unlock(&data->update_lock);
904 static ssize_t show_temp_auto_temp_min(struct device *dev,
905 struct device_attribute *attr, char *buf)
907 int nr = to_sensor_dev_attr(attr)->index;
908 struct lm85_data *data = lm85_update_device(dev);
909 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
912 static ssize_t set_temp_auto_temp_min(struct device *dev,
913 struct device_attribute *attr, const char *buf, size_t count)
915 int nr = to_sensor_dev_attr(attr)->index;
916 struct i2c_client *client = to_i2c_client(dev);
917 struct lm85_data *data = i2c_get_clientdata(client);
918 long val = simple_strtol(buf, NULL, 10);
920 mutex_lock(&data->update_lock);
921 data->zone[nr].limit = TEMP_TO_REG(val);
922 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
923 data->zone[nr].limit);
925 /* Update temp_auto_max and temp_auto_range */
926 data->zone[nr].range = RANGE_TO_REG(
927 TEMP_FROM_REG(data->zone[nr].max_desired) -
928 TEMP_FROM_REG(data->zone[nr].limit));
929 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
930 ((data->zone[nr].range & 0x0f) << 4)
931 | (data->pwm_freq[nr] & 0x07));
933 mutex_unlock(&data->update_lock);
937 static ssize_t show_temp_auto_temp_max(struct device *dev,
938 struct device_attribute *attr, char *buf)
940 int nr = to_sensor_dev_attr(attr)->index;
941 struct lm85_data *data = lm85_update_device(dev);
942 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
943 RANGE_FROM_REG(data->zone[nr].range));
946 static ssize_t set_temp_auto_temp_max(struct device *dev,
947 struct device_attribute *attr, const char *buf, size_t count)
949 int nr = to_sensor_dev_attr(attr)->index;
950 struct i2c_client *client = to_i2c_client(dev);
951 struct lm85_data *data = i2c_get_clientdata(client);
953 long val = simple_strtol(buf, NULL, 10);
955 mutex_lock(&data->update_lock);
956 min = TEMP_FROM_REG(data->zone[nr].limit);
957 data->zone[nr].max_desired = TEMP_TO_REG(val);
958 data->zone[nr].range = RANGE_TO_REG(
960 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
961 ((data->zone[nr].range & 0x0f) << 4)
962 | (data->pwm_freq[nr] & 0x07));
963 mutex_unlock(&data->update_lock);
967 static ssize_t show_temp_auto_temp_crit(struct device *dev,
968 struct device_attribute *attr, char *buf)
970 int nr = to_sensor_dev_attr(attr)->index;
971 struct lm85_data *data = lm85_update_device(dev);
972 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
975 static ssize_t set_temp_auto_temp_crit(struct device *dev,
976 struct device_attribute *attr, const char *buf, size_t count)
978 int nr = to_sensor_dev_attr(attr)->index;
979 struct i2c_client *client = to_i2c_client(dev);
980 struct lm85_data *data = i2c_get_clientdata(client);
981 long val = simple_strtol(buf, NULL, 10);
983 mutex_lock(&data->update_lock);
984 data->zone[nr].critical = TEMP_TO_REG(val);
985 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
986 data->zone[nr].critical);
987 mutex_unlock(&data->update_lock);
991 #define temp_auto(offset) \
992 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
993 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
994 set_temp_auto_temp_off, offset - 1); \
995 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
996 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
997 set_temp_auto_temp_min, offset - 1); \
998 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
999 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
1000 set_temp_auto_temp_max, offset - 1); \
1001 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
1002 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
1003 set_temp_auto_temp_crit, offset - 1);
1009 static struct attribute *lm85_attributes[] = {
1010 &sensor_dev_attr_fan1_input.dev_attr.attr,
1011 &sensor_dev_attr_fan2_input.dev_attr.attr,
1012 &sensor_dev_attr_fan3_input.dev_attr.attr,
1013 &sensor_dev_attr_fan4_input.dev_attr.attr,
1014 &sensor_dev_attr_fan1_min.dev_attr.attr,
1015 &sensor_dev_attr_fan2_min.dev_attr.attr,
1016 &sensor_dev_attr_fan3_min.dev_attr.attr,
1017 &sensor_dev_attr_fan4_min.dev_attr.attr,
1018 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1019 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1020 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1021 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1023 &sensor_dev_attr_pwm1.dev_attr.attr,
1024 &sensor_dev_attr_pwm2.dev_attr.attr,
1025 &sensor_dev_attr_pwm3.dev_attr.attr,
1026 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1027 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1028 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1029 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1030 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1031 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1033 &sensor_dev_attr_in0_input.dev_attr.attr,
1034 &sensor_dev_attr_in1_input.dev_attr.attr,
1035 &sensor_dev_attr_in2_input.dev_attr.attr,
1036 &sensor_dev_attr_in3_input.dev_attr.attr,
1037 &sensor_dev_attr_in0_min.dev_attr.attr,
1038 &sensor_dev_attr_in1_min.dev_attr.attr,
1039 &sensor_dev_attr_in2_min.dev_attr.attr,
1040 &sensor_dev_attr_in3_min.dev_attr.attr,
1041 &sensor_dev_attr_in0_max.dev_attr.attr,
1042 &sensor_dev_attr_in1_max.dev_attr.attr,
1043 &sensor_dev_attr_in2_max.dev_attr.attr,
1044 &sensor_dev_attr_in3_max.dev_attr.attr,
1045 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1046 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1047 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1048 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1050 &sensor_dev_attr_temp1_input.dev_attr.attr,
1051 &sensor_dev_attr_temp2_input.dev_attr.attr,
1052 &sensor_dev_attr_temp3_input.dev_attr.attr,
1053 &sensor_dev_attr_temp1_min.dev_attr.attr,
1054 &sensor_dev_attr_temp2_min.dev_attr.attr,
1055 &sensor_dev_attr_temp3_min.dev_attr.attr,
1056 &sensor_dev_attr_temp1_max.dev_attr.attr,
1057 &sensor_dev_attr_temp2_max.dev_attr.attr,
1058 &sensor_dev_attr_temp3_max.dev_attr.attr,
1059 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1060 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1061 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1062 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1063 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1065 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1066 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1067 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1068 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1069 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1070 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1071 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1072 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1073 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1075 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1076 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1077 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1078 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1079 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1080 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1081 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1082 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1083 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1084 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1085 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1086 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1089 &dev_attr_cpu0_vid.attr,
1090 &dev_attr_alarms.attr,
1094 static const struct attribute_group lm85_group = {
1095 .attrs = lm85_attributes,
1098 static struct attribute *lm85_attributes_in4[] = {
1099 &sensor_dev_attr_in4_input.dev_attr.attr,
1100 &sensor_dev_attr_in4_min.dev_attr.attr,
1101 &sensor_dev_attr_in4_max.dev_attr.attr,
1102 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1106 static const struct attribute_group lm85_group_in4 = {
1107 .attrs = lm85_attributes_in4,
1110 static struct attribute *lm85_attributes_in567[] = {
1111 &sensor_dev_attr_in5_input.dev_attr.attr,
1112 &sensor_dev_attr_in6_input.dev_attr.attr,
1113 &sensor_dev_attr_in7_input.dev_attr.attr,
1114 &sensor_dev_attr_in5_min.dev_attr.attr,
1115 &sensor_dev_attr_in6_min.dev_attr.attr,
1116 &sensor_dev_attr_in7_min.dev_attr.attr,
1117 &sensor_dev_attr_in5_max.dev_attr.attr,
1118 &sensor_dev_attr_in6_max.dev_attr.attr,
1119 &sensor_dev_attr_in7_max.dev_attr.attr,
1120 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1121 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1122 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1126 static const struct attribute_group lm85_group_in567 = {
1127 .attrs = lm85_attributes_in567,
1130 static void lm85_init_client(struct i2c_client *client)
1134 /* Start monitoring if needed */
1135 value = lm85_read_value(client, LM85_REG_CONFIG);
1136 if (!(value & 0x01)) {
1137 dev_info(&client->dev, "Starting monitoring\n");
1138 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1141 /* Warn about unusual configuration bits */
1143 dev_warn(&client->dev, "Device configuration is locked\n");
1144 if (!(value & 0x04))
1145 dev_warn(&client->dev, "Device is not ready\n");
1148 static int lm85_is_fake(struct i2c_client *client)
1151 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1152 * emulate the former except that it has no hardware monitoring function
1153 * so the readings are always 0.
1158 for (i = 0; i < 8; i++) {
1159 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1160 fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1161 if (in_temp != 0x00 || fan != 0xff)
1168 /* Return 0 if detection is successful, -ENODEV otherwise */
1169 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
1171 struct i2c_adapter *adapter = client->adapter;
1172 int address = client->addr;
1173 const char *type_name;
1174 int company, verstep;
1176 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1177 /* We need to be able to do byte I/O */
1181 /* Determine the chip type */
1182 company = lm85_read_value(client, LM85_REG_COMPANY);
1183 verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1185 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
1186 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1187 address, company, verstep);
1189 /* All supported chips have the version in common */
1190 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC &&
1191 (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) {
1192 dev_dbg(&adapter->dev,
1193 "Autodetection failed: unsupported version\n");
1198 /* Now, refine the detection */
1199 if (company == LM85_COMPANY_NATIONAL) {
1201 case LM85_VERSTEP_LM85C:
1202 type_name = "lm85c";
1204 case LM85_VERSTEP_LM85B:
1205 type_name = "lm85b";
1207 case LM85_VERSTEP_LM96000_1:
1208 case LM85_VERSTEP_LM96000_2:
1209 /* Check for Winbond WPCD377I */
1210 if (lm85_is_fake(client)) {
1211 dev_dbg(&adapter->dev,
1212 "Found Winbond WPCD377I, ignoring\n");
1217 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1219 case LM85_VERSTEP_ADM1027:
1220 type_name = "adm1027";
1222 case LM85_VERSTEP_ADT7463:
1223 case LM85_VERSTEP_ADT7463C:
1224 type_name = "adt7463";
1226 case LM85_VERSTEP_ADT7468_1:
1227 case LM85_VERSTEP_ADT7468_2:
1228 type_name = "adt7468";
1231 } else if (company == LM85_COMPANY_SMSC) {
1233 case LM85_VERSTEP_EMC6D100_A0:
1234 case LM85_VERSTEP_EMC6D100_A1:
1235 /* Note: we can't tell a '100 from a '101 */
1236 type_name = "emc6d100";
1238 case LM85_VERSTEP_EMC6D102:
1239 type_name = "emc6d102";
1241 case LM85_VERSTEP_EMC6D103_A0:
1242 case LM85_VERSTEP_EMC6D103_A1:
1243 type_name = "emc6d103";
1246 * Registers apparently missing in EMC6D103S/EMC6D103:A2
1247 * compared to EMC6D103:A0, EMC6D103:A1, and EMC6D102
1248 * (according to the data sheets), but used unconditionally
1249 * in the driver: 62[5:7], 6D[0:7], and 6E[0:7].
1250 * So skip EMC6D103S for now.
1251 case LM85_VERSTEP_EMC6D103S:
1252 type_name = "emc6d103s";
1257 dev_dbg(&adapter->dev,
1258 "Autodetection failed: unknown vendor\n");
1262 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1267 static void lm85_remove_files(struct i2c_client *client, struct lm85_data *data)
1269 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1270 if (!data->has_vid5)
1271 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1272 if (data->type == emc6d100)
1273 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1276 static int lm85_probe(struct i2c_client *client,
1277 const struct i2c_device_id *id)
1279 struct lm85_data *data;
1282 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
1286 i2c_set_clientdata(client, data);
1287 data->type = id->driver_data;
1288 mutex_init(&data->update_lock);
1290 /* Fill in the chip specific driver values */
1291 switch (data->type) {
1298 data->freq_map = adm1027_freq_map;
1301 data->freq_map = lm85_freq_map;
1304 /* Set the VRM version */
1305 data->vrm = vid_which_vrm();
1307 /* Initialize the LM85 chip */
1308 lm85_init_client(client);
1310 /* Register sysfs hooks */
1311 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1315 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1316 as a sixth digital VID input rather than an analog input. */
1317 if (data->type == adt7463 || data->type == adt7468) {
1318 u8 vid = lm85_read_value(client, LM85_REG_VID);
1320 data->has_vid5 = true;
1323 if (!data->has_vid5)
1324 if ((err = sysfs_create_group(&client->dev.kobj,
1326 goto err_remove_files;
1328 /* The EMC6D100 has 3 additional voltage inputs */
1329 if (data->type == emc6d100)
1330 if ((err = sysfs_create_group(&client->dev.kobj,
1331 &lm85_group_in567)))
1332 goto err_remove_files;
1334 data->hwmon_dev = hwmon_device_register(&client->dev);
1335 if (IS_ERR(data->hwmon_dev)) {
1336 err = PTR_ERR(data->hwmon_dev);
1337 goto err_remove_files;
1342 /* Error out and cleanup code */
1344 lm85_remove_files(client, data);
1350 static int lm85_remove(struct i2c_client *client)
1352 struct lm85_data *data = i2c_get_clientdata(client);
1353 hwmon_device_unregister(data->hwmon_dev);
1354 lm85_remove_files(client, data);
1360 static int lm85_read_value(struct i2c_client *client, u8 reg)
1364 /* What size location is it? */
1366 case LM85_REG_FAN(0): /* Read WORD data */
1367 case LM85_REG_FAN(1):
1368 case LM85_REG_FAN(2):
1369 case LM85_REG_FAN(3):
1370 case LM85_REG_FAN_MIN(0):
1371 case LM85_REG_FAN_MIN(1):
1372 case LM85_REG_FAN_MIN(2):
1373 case LM85_REG_FAN_MIN(3):
1374 case LM85_REG_ALARM1: /* Read both bytes at once */
1375 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1376 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1378 default: /* Read BYTE data */
1379 res = i2c_smbus_read_byte_data(client, reg);
1386 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1389 case LM85_REG_FAN(0): /* Write WORD data */
1390 case LM85_REG_FAN(1):
1391 case LM85_REG_FAN(2):
1392 case LM85_REG_FAN(3):
1393 case LM85_REG_FAN_MIN(0):
1394 case LM85_REG_FAN_MIN(1):
1395 case LM85_REG_FAN_MIN(2):
1396 case LM85_REG_FAN_MIN(3):
1397 /* NOTE: ALARM is read only, so not included here */
1398 i2c_smbus_write_byte_data(client, reg, value & 0xff);
1399 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1401 default: /* Write BYTE data */
1402 i2c_smbus_write_byte_data(client, reg, value);
1407 static struct lm85_data *lm85_update_device(struct device *dev)
1409 struct i2c_client *client = to_i2c_client(dev);
1410 struct lm85_data *data = i2c_get_clientdata(client);
1413 mutex_lock(&data->update_lock);
1416 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1417 /* Things that change quickly */
1418 dev_dbg(&client->dev, "Reading sensor values\n");
1420 /* Have to read extended bits first to "freeze" the
1421 * more significant bits that are read later.
1422 * There are 2 additional resolution bits per channel and we
1423 * have room for 4, so we shift them to the left.
1425 if (data->type == adm1027 || data->type == adt7463 ||
1426 data->type == adt7468) {
1427 int ext1 = lm85_read_value(client,
1428 ADM1027_REG_EXTEND_ADC1);
1429 int ext2 = lm85_read_value(client,
1430 ADM1027_REG_EXTEND_ADC2);
1431 int val = (ext1 << 8) + ext2;
1433 for (i = 0; i <= 4; i++)
1435 ((val >> (i * 2)) & 0x03) << 2;
1437 for (i = 0; i <= 2; i++)
1439 (val >> ((i + 4) * 2)) & 0x0c;
1442 data->vid = lm85_read_value(client, LM85_REG_VID);
1444 for (i = 0; i <= 3; ++i) {
1446 lm85_read_value(client, LM85_REG_IN(i));
1448 lm85_read_value(client, LM85_REG_FAN(i));
1451 if (!data->has_vid5)
1452 data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
1454 if (data->type == adt7468)
1455 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
1457 for (i = 0; i <= 2; ++i) {
1459 lm85_read_value(client, LM85_REG_TEMP(i));
1461 lm85_read_value(client, LM85_REG_PWM(i));
1463 if (IS_ADT7468_OFF64(data))
1464 data->temp[i] -= 64;
1467 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1469 if (data->type == emc6d100) {
1470 /* Three more voltage sensors */
1471 for (i = 5; i <= 7; ++i) {
1472 data->in[i] = lm85_read_value(client,
1473 EMC6D100_REG_IN(i));
1475 /* More alarm bits */
1476 data->alarms |= lm85_read_value(client,
1477 EMC6D100_REG_ALARM3) << 16;
1478 } else if (data->type == emc6d102 || data->type == emc6d103) {
1479 /* Have to read LSB bits after the MSB ones because
1480 the reading of the MSB bits has frozen the
1481 LSBs (backward from the ADM1027).
1483 int ext1 = lm85_read_value(client,
1484 EMC6D102_REG_EXTEND_ADC1);
1485 int ext2 = lm85_read_value(client,
1486 EMC6D102_REG_EXTEND_ADC2);
1487 int ext3 = lm85_read_value(client,
1488 EMC6D102_REG_EXTEND_ADC3);
1489 int ext4 = lm85_read_value(client,
1490 EMC6D102_REG_EXTEND_ADC4);
1491 data->in_ext[0] = ext3 & 0x0f;
1492 data->in_ext[1] = ext4 & 0x0f;
1493 data->in_ext[2] = ext4 >> 4;
1494 data->in_ext[3] = ext3 >> 4;
1495 data->in_ext[4] = ext2 >> 4;
1497 data->temp_ext[0] = ext1 & 0x0f;
1498 data->temp_ext[1] = ext2 & 0x0f;
1499 data->temp_ext[2] = ext1 >> 4;
1502 data->last_reading = jiffies;
1503 } /* last_reading */
1506 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1507 /* Things that don't change often */
1508 dev_dbg(&client->dev, "Reading config values\n");
1510 for (i = 0; i <= 3; ++i) {
1512 lm85_read_value(client, LM85_REG_IN_MIN(i));
1514 lm85_read_value(client, LM85_REG_IN_MAX(i));
1516 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1519 if (!data->has_vid5) {
1520 data->in_min[4] = lm85_read_value(client,
1521 LM85_REG_IN_MIN(4));
1522 data->in_max[4] = lm85_read_value(client,
1523 LM85_REG_IN_MAX(4));
1526 if (data->type == emc6d100) {
1527 for (i = 5; i <= 7; ++i) {
1528 data->in_min[i] = lm85_read_value(client,
1529 EMC6D100_REG_IN_MIN(i));
1530 data->in_max[i] = lm85_read_value(client,
1531 EMC6D100_REG_IN_MAX(i));
1535 for (i = 0; i <= 2; ++i) {
1539 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1541 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1543 data->autofan[i].config =
1544 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1545 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1546 data->pwm_freq[i] = val & 0x07;
1547 data->zone[i].range = val >> 4;
1548 data->autofan[i].min_pwm =
1549 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1550 data->zone[i].limit =
1551 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1552 data->zone[i].critical =
1553 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1555 if (IS_ADT7468_OFF64(data)) {
1556 data->temp_min[i] -= 64;
1557 data->temp_max[i] -= 64;
1558 data->zone[i].limit -= 64;
1559 data->zone[i].critical -= 64;
1563 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1564 data->autofan[0].min_off = (i & 0x20) != 0;
1565 data->autofan[1].min_off = (i & 0x40) != 0;
1566 data->autofan[2].min_off = (i & 0x80) != 0;
1568 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1569 data->zone[0].hyst = i >> 4;
1570 data->zone[1].hyst = i & 0x0f;
1572 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1573 data->zone[2].hyst = i >> 4;
1575 data->last_config = jiffies;
1580 mutex_unlock(&data->update_lock);
1586 static int __init sm_lm85_init(void)
1588 return i2c_add_driver(&lm85_driver);
1591 static void __exit sm_lm85_exit(void)
1593 i2c_del_driver(&lm85_driver);
1596 MODULE_LICENSE("GPL");
1597 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1598 "Margit Schubert-While <margitsw@t-online.de>, "
1599 "Justin Thiessen <jthiessen@penguincomputing.com>");
1600 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1602 module_init(sm_lm85_init);
1603 module_exit(sm_lm85_exit);