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>
9 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/hwmon.h>
32 #include <linux/hwmon-vid.h>
33 #include <linux/hwmon-sysfs.h>
34 #include <linux/err.h>
35 #include <linux/mutex.h>
37 /* Addresses to scan */
38 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
40 /* Insmod parameters */
41 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102);
43 /* The LM85 registers */
45 #define LM85_REG_IN(nr) (0x20 + (nr))
46 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
47 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
49 #define LM85_REG_TEMP(nr) (0x25 + (nr))
50 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
51 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
53 /* Fan speeds are LSB, MSB (2 bytes) */
54 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
55 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
57 #define LM85_REG_PWM(nr) (0x30 + (nr))
59 #define LM85_REG_COMPANY 0x3e
60 #define LM85_REG_VERSTEP 0x3f
61 /* These are the recognized values for the above regs */
62 #define LM85_COMPANY_NATIONAL 0x01
63 #define LM85_COMPANY_ANALOG_DEV 0x41
64 #define LM85_COMPANY_SMSC 0x5c
65 #define LM85_VERSTEP_VMASK 0xf0
66 #define LM85_VERSTEP_GENERIC 0x60
67 #define LM85_VERSTEP_LM85C 0x60
68 #define LM85_VERSTEP_LM85B 0x62
69 #define LM85_VERSTEP_ADM1027 0x60
70 #define LM85_VERSTEP_ADT7463 0x62
71 #define LM85_VERSTEP_ADT7463C 0x6A
72 #define LM85_VERSTEP_EMC6D100_A0 0x60
73 #define LM85_VERSTEP_EMC6D100_A1 0x61
74 #define LM85_VERSTEP_EMC6D102 0x65
76 #define LM85_REG_CONFIG 0x40
78 #define LM85_REG_ALARM1 0x41
79 #define LM85_REG_ALARM2 0x42
81 #define LM85_REG_VID 0x43
83 /* Automated FAN control */
84 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
85 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
86 #define LM85_REG_AFAN_SPIKE1 0x62
87 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
88 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
89 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
90 #define LM85_REG_AFAN_HYST1 0x6d
91 #define LM85_REG_AFAN_HYST2 0x6e
93 #define ADM1027_REG_EXTEND_ADC1 0x76
94 #define ADM1027_REG_EXTEND_ADC2 0x77
96 #define EMC6D100_REG_ALARM3 0x7d
97 /* IN5, IN6 and IN7 */
98 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
99 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
100 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
101 #define EMC6D102_REG_EXTEND_ADC1 0x85
102 #define EMC6D102_REG_EXTEND_ADC2 0x86
103 #define EMC6D102_REG_EXTEND_ADC3 0x87
104 #define EMC6D102_REG_EXTEND_ADC4 0x88
107 /* Conversions. Rounding and limit checking is only done on the TO_REG
108 variants. Note that you should be a bit careful with which arguments
109 these macros are called: arguments may be evaluated more than once.
112 /* IN are scaled acording to built-in resistors */
113 static const int lm85_scaling[] = { /* .001 Volts */
114 2500, 2250, 3300, 5000, 12000,
115 3300, 1500, 1800 /*EMC6D100*/
117 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
119 #define INS_TO_REG(n, val) \
120 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
122 #define INSEXT_FROM_REG(n, val, ext) \
123 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
125 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
127 /* FAN speed is measured using 90kHz clock */
128 static inline u16 FAN_TO_REG(unsigned long val)
132 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
134 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
137 /* Temperature is reported in .001 degC increments */
138 #define TEMP_TO_REG(val) \
139 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
140 #define TEMPEXT_FROM_REG(val, ext) \
141 SCALE(((val) << 4) + (ext), 16, 1000)
142 #define TEMP_FROM_REG(val) ((val) * 1000)
144 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
145 #define PWM_FROM_REG(val) (val)
148 /* ZONEs have the following parameters:
149 * Limit (low) temp, 1. degC
150 * Hysteresis (below limit), 1. degC (0-15)
151 * Range of speed control, .1 degC (2-80)
152 * Critical (high) temp, 1. degC
154 * FAN PWMs have the following parameters:
155 * Reference Zone, 1, 2, 3, etc.
156 * Spinup time, .05 sec
157 * PWM value at limit/low temp, 1 count
158 * PWM Frequency, 1. Hz
159 * PWM is Min or OFF below limit, flag
160 * Invert PWM output, flag
162 * Some chips filter the temp, others the fan.
163 * Filter constant (or disabled) .1 seconds
166 /* These are the zone temperature range encodings in .001 degree C */
167 static const int lm85_range_map[] = {
168 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
169 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
172 static int RANGE_TO_REG(int range)
176 if (range >= lm85_range_map[15])
179 /* Find the closest match */
180 for (i = 14; i >= 0; --i) {
181 if (range >= lm85_range_map[i]) {
182 if ((lm85_range_map[i + 1] - range) <
183 (range - lm85_range_map[i]))
191 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
193 /* These are the PWM frequency encodings */
194 static const int lm85_freq_map[] = { /* .1 Hz */
195 100, 150, 230, 300, 380, 470, 620, 940
198 static int FREQ_TO_REG(int freq)
202 if (freq >= lm85_freq_map[7])
204 for (i = 0; i < 7; ++i)
205 if (freq <= lm85_freq_map[i])
209 #define FREQ_FROM_REG(val) lm85_freq_map[(val) & 0x07]
211 /* Since we can't use strings, I'm abusing these numbers
212 * to stand in for the following meanings:
213 * 1 -- PWM responds to Zone 1
214 * 2 -- PWM responds to Zone 2
215 * 3 -- PWM responds to Zone 3
216 * 23 -- PWM responds to the higher temp of Zone 2 or 3
217 * 123 -- PWM responds to highest of Zone 1, 2, or 3
218 * 0 -- PWM is always at 0% (ie, off)
219 * -1 -- PWM is always at 100%
220 * -2 -- PWM responds to manual control
223 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
224 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
226 static int ZONE_TO_REG(int zone)
230 for (i = 0; i <= 7; ++i)
231 if (zone == lm85_zone_map[i])
233 if (i > 7) /* Not found. */
234 i = 3; /* Always 100% */
238 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
239 #define HYST_FROM_REG(val) ((val) * 1000)
241 /* Chip sampling rates
243 * Some sensors are not updated more frequently than once per second
244 * so it doesn't make sense to read them more often than that.
245 * We cache the results and return the saved data if the driver
246 * is called again before a second has elapsed.
248 * Also, there is significant configuration data for this chip
249 * given the automatic PWM fan control that is possible. There
250 * are about 47 bytes of config data to only 22 bytes of actual
251 * readings. So, we keep the config data up to date in the cache
252 * when it is written and only sample it once every 1 *minute*
254 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
255 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
257 /* LM85 can automatically adjust fan speeds based on temperature
258 * This structure encapsulates an entire Zone config. There are
259 * three zones (one for each temperature input) on the lm85
262 s8 limit; /* Low temp limit */
263 u8 hyst; /* Low limit hysteresis. (0-15) */
264 u8 range; /* Temp range, encoded */
265 s8 critical; /* "All fans ON" temp limit */
266 u8 off_desired; /* Actual "off" temperature specified. Preserved
267 * to prevent "drift" as other autofan control
270 u8 max_desired; /* Actual "max" temperature specified. Preserved
271 * to prevent "drift" as other autofan control
276 struct lm85_autofan {
277 u8 config; /* Register value */
278 u8 freq; /* PWM frequency, encoded */
279 u8 min_pwm; /* Minimum PWM value, encoded */
280 u8 min_off; /* Min PWM or OFF below "limit", flag */
283 /* For each registered chip, we need to keep some data in memory.
284 The structure is dynamically allocated. */
286 struct i2c_client client;
287 struct device *hwmon_dev;
290 struct mutex update_lock;
291 int valid; /* !=0 if following fields are valid */
292 unsigned long last_reading; /* In jiffies */
293 unsigned long last_config; /* In jiffies */
295 u8 in[8]; /* Register value */
296 u8 in_max[8]; /* Register value */
297 u8 in_min[8]; /* Register value */
298 s8 temp[3]; /* Register value */
299 s8 temp_min[3]; /* Register value */
300 s8 temp_max[3]; /* Register value */
301 u16 fan[4]; /* Register value */
302 u16 fan_min[4]; /* Register value */
303 u8 pwm[3]; /* Register value */
304 u8 temp_ext[3]; /* Decoded values */
305 u8 in_ext[8]; /* Decoded values */
306 u8 vid; /* Register value */
307 u8 vrm; /* VRM version */
308 u32 alarms; /* Register encoding, combined */
309 struct lm85_autofan autofan[3];
310 struct lm85_zone zone[3];
313 static int lm85_attach_adapter(struct i2c_adapter *adapter);
314 static int lm85_detect(struct i2c_adapter *adapter, int address,
316 static int lm85_detach_client(struct i2c_client *client);
318 static int lm85_read_value(struct i2c_client *client, u8 reg);
319 static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
320 static struct lm85_data *lm85_update_device(struct device *dev);
321 static void lm85_init_client(struct i2c_client *client);
324 static struct i2c_driver lm85_driver = {
328 .attach_adapter = lm85_attach_adapter,
329 .detach_client = lm85_detach_client,
334 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
337 int nr = to_sensor_dev_attr(attr)->index;
338 struct lm85_data *data = lm85_update_device(dev);
339 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
342 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
345 int nr = to_sensor_dev_attr(attr)->index;
346 struct lm85_data *data = lm85_update_device(dev);
347 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
350 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
351 const char *buf, size_t count)
353 int nr = to_sensor_dev_attr(attr)->index;
354 struct i2c_client *client = to_i2c_client(dev);
355 struct lm85_data *data = i2c_get_clientdata(client);
356 unsigned long val = simple_strtoul(buf, NULL, 10);
358 mutex_lock(&data->update_lock);
359 data->fan_min[nr] = FAN_TO_REG(val);
360 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
361 mutex_unlock(&data->update_lock);
365 #define show_fan_offset(offset) \
366 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
367 show_fan, NULL, offset - 1); \
368 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
369 show_fan_min, set_fan_min, offset - 1)
376 /* vid, vrm, alarms */
378 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
381 struct lm85_data *data = lm85_update_device(dev);
384 if (data->type == adt7463 && (data->vid & 0x80)) {
385 /* 6-pin VID (VRM 10) */
386 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
388 /* 5-pin VID (VRM 9) */
389 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
392 return sprintf(buf, "%d\n", vid);
395 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
397 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
400 struct lm85_data *data = dev_get_drvdata(dev);
401 return sprintf(buf, "%ld\n", (long) data->vrm);
404 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
405 const char *buf, size_t count)
407 struct lm85_data *data = dev_get_drvdata(dev);
408 data->vrm = simple_strtoul(buf, NULL, 10);
412 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
414 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
417 struct lm85_data *data = lm85_update_device(dev);
418 return sprintf(buf, "%u\n", data->alarms);
421 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
423 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
426 int nr = to_sensor_dev_attr(attr)->index;
427 struct lm85_data *data = lm85_update_device(dev);
428 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
431 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
432 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
433 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
434 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
435 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
436 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
437 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
438 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
439 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
440 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
441 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
442 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
443 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
444 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
445 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
446 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
447 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
451 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
454 int nr = to_sensor_dev_attr(attr)->index;
455 struct lm85_data *data = lm85_update_device(dev);
456 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
459 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
460 const char *buf, size_t count)
462 int nr = to_sensor_dev_attr(attr)->index;
463 struct i2c_client *client = to_i2c_client(dev);
464 struct lm85_data *data = i2c_get_clientdata(client);
465 long val = simple_strtol(buf, NULL, 10);
467 mutex_lock(&data->update_lock);
468 data->pwm[nr] = PWM_TO_REG(val);
469 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
470 mutex_unlock(&data->update_lock);
474 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
477 int nr = to_sensor_dev_attr(attr)->index;
478 struct lm85_data *data = lm85_update_device(dev);
479 int pwm_zone, enable;
481 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
483 case -1: /* PWM is always at 100% */
486 case 0: /* PWM is always at 0% */
487 case -2: /* PWM responds to manual control */
490 default: /* PWM in automatic mode */
493 return sprintf(buf, "%d\n", enable);
496 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
497 *attr, 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);
513 /* Here we have to choose arbitrarily one of the 5 possible
514 configurations; I go for the safest */
521 mutex_lock(&data->update_lock);
522 data->autofan[nr].config = lm85_read_value(client,
523 LM85_REG_AFAN_CONFIG(nr));
524 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
526 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
527 data->autofan[nr].config);
528 mutex_unlock(&data->update_lock);
532 #define show_pwm_reg(offset) \
533 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
534 show_pwm, set_pwm, offset - 1); \
535 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
536 show_pwm_enable, set_pwm_enable, offset - 1)
544 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
547 int nr = to_sensor_dev_attr(attr)->index;
548 struct lm85_data *data = lm85_update_device(dev);
549 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
553 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
556 int nr = to_sensor_dev_attr(attr)->index;
557 struct lm85_data *data = lm85_update_device(dev);
558 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
561 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
562 const char *buf, size_t count)
564 int nr = to_sensor_dev_attr(attr)->index;
565 struct i2c_client *client = to_i2c_client(dev);
566 struct lm85_data *data = i2c_get_clientdata(client);
567 long val = simple_strtol(buf, NULL, 10);
569 mutex_lock(&data->update_lock);
570 data->in_min[nr] = INS_TO_REG(nr, val);
571 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
572 mutex_unlock(&data->update_lock);
576 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
579 int nr = to_sensor_dev_attr(attr)->index;
580 struct lm85_data *data = lm85_update_device(dev);
581 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
584 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
585 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 data->in_max[nr] = INS_TO_REG(nr, val);
594 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
595 mutex_unlock(&data->update_lock);
599 #define show_in_reg(offset) \
600 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
601 show_in, NULL, offset); \
602 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
603 show_in_min, set_in_min, offset); \
604 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
605 show_in_max, set_in_max, offset)
618 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
621 int nr = to_sensor_dev_attr(attr)->index;
622 struct lm85_data *data = lm85_update_device(dev);
623 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
624 data->temp_ext[nr]));
627 static ssize_t show_temp_min(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", TEMP_FROM_REG(data->temp_min[nr]));
635 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
636 const char *buf, size_t count)
638 int nr = to_sensor_dev_attr(attr)->index;
639 struct i2c_client *client = to_i2c_client(dev);
640 struct lm85_data *data = i2c_get_clientdata(client);
641 long val = simple_strtol(buf, NULL, 10);
643 mutex_lock(&data->update_lock);
644 data->temp_min[nr] = TEMP_TO_REG(val);
645 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
646 mutex_unlock(&data->update_lock);
650 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
653 int nr = to_sensor_dev_attr(attr)->index;
654 struct lm85_data *data = lm85_update_device(dev);
655 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
658 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
659 const char *buf, size_t count)
661 int nr = to_sensor_dev_attr(attr)->index;
662 struct i2c_client *client = to_i2c_client(dev);
663 struct lm85_data *data = i2c_get_clientdata(client);
664 long val = simple_strtol(buf, NULL, 10);
666 mutex_lock(&data->update_lock);
667 data->temp_max[nr] = TEMP_TO_REG(val);
668 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
669 mutex_unlock(&data->update_lock);
673 #define show_temp_reg(offset) \
674 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
675 show_temp, NULL, offset - 1); \
676 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
677 show_temp_min, set_temp_min, offset - 1); \
678 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
679 show_temp_max, set_temp_max, offset - 1);
686 /* Automatic PWM control */
688 static ssize_t show_pwm_auto_channels(struct device *dev,
689 struct device_attribute *attr, char *buf)
691 int nr = to_sensor_dev_attr(attr)->index;
692 struct lm85_data *data = lm85_update_device(dev);
693 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
696 static ssize_t set_pwm_auto_channels(struct device *dev,
697 struct device_attribute *attr, const char *buf, size_t count)
699 int nr = to_sensor_dev_attr(attr)->index;
700 struct i2c_client *client = to_i2c_client(dev);
701 struct lm85_data *data = i2c_get_clientdata(client);
702 long val = simple_strtol(buf, NULL, 10);
704 mutex_lock(&data->update_lock);
705 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
707 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
708 data->autofan[nr].config);
709 mutex_unlock(&data->update_lock);
713 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
714 struct device_attribute *attr, char *buf)
716 int nr = to_sensor_dev_attr(attr)->index;
717 struct lm85_data *data = lm85_update_device(dev);
718 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
721 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
722 struct device_attribute *attr, const char *buf, size_t count)
724 int nr = to_sensor_dev_attr(attr)->index;
725 struct i2c_client *client = to_i2c_client(dev);
726 struct lm85_data *data = i2c_get_clientdata(client);
727 long val = simple_strtol(buf, NULL, 10);
729 mutex_lock(&data->update_lock);
730 data->autofan[nr].min_pwm = PWM_TO_REG(val);
731 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
732 data->autofan[nr].min_pwm);
733 mutex_unlock(&data->update_lock);
737 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
738 struct device_attribute *attr, char *buf)
740 int nr = to_sensor_dev_attr(attr)->index;
741 struct lm85_data *data = lm85_update_device(dev);
742 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
745 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
746 struct device_attribute *attr, const char *buf, size_t count)
748 int nr = to_sensor_dev_attr(attr)->index;
749 struct i2c_client *client = to_i2c_client(dev);
750 struct lm85_data *data = i2c_get_clientdata(client);
751 long val = simple_strtol(buf, NULL, 10);
754 mutex_lock(&data->update_lock);
755 data->autofan[nr].min_off = val;
756 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
757 tmp &= ~(0x20 << nr);
758 if (data->autofan[nr].min_off)
760 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
761 mutex_unlock(&data->update_lock);
765 static ssize_t show_pwm_auto_pwm_freq(struct device *dev,
766 struct device_attribute *attr, char *buf)
768 int nr = to_sensor_dev_attr(attr)->index;
769 struct lm85_data *data = lm85_update_device(dev);
770 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
773 static ssize_t set_pwm_auto_pwm_freq(struct device *dev,
774 struct device_attribute *attr, const char *buf, size_t count)
776 int nr = to_sensor_dev_attr(attr)->index;
777 struct i2c_client *client = to_i2c_client(dev);
778 struct lm85_data *data = i2c_get_clientdata(client);
779 long val = simple_strtol(buf, NULL, 10);
781 mutex_lock(&data->update_lock);
782 data->autofan[nr].freq = FREQ_TO_REG(val);
783 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
784 (data->zone[nr].range << 4)
785 | data->autofan[nr].freq);
786 mutex_unlock(&data->update_lock);
790 #define pwm_auto(offset) \
791 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
792 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
793 set_pwm_auto_channels, offset - 1); \
794 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
795 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
796 set_pwm_auto_pwm_min, offset - 1); \
797 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
798 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
799 set_pwm_auto_pwm_minctl, offset - 1); \
800 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
801 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
802 set_pwm_auto_pwm_freq, offset - 1);
808 /* Temperature settings for automatic PWM control */
810 static ssize_t show_temp_auto_temp_off(struct device *dev,
811 struct device_attribute *attr, char *buf)
813 int nr = to_sensor_dev_attr(attr)->index;
814 struct lm85_data *data = lm85_update_device(dev);
815 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
816 HYST_FROM_REG(data->zone[nr].hyst));
819 static ssize_t set_temp_auto_temp_off(struct device *dev,
820 struct device_attribute *attr, const char *buf, size_t count)
822 int nr = to_sensor_dev_attr(attr)->index;
823 struct i2c_client *client = to_i2c_client(dev);
824 struct lm85_data *data = i2c_get_clientdata(client);
826 long val = simple_strtol(buf, NULL, 10);
828 mutex_lock(&data->update_lock);
829 min = TEMP_FROM_REG(data->zone[nr].limit);
830 data->zone[nr].off_desired = TEMP_TO_REG(val);
831 data->zone[nr].hyst = HYST_TO_REG(min - val);
832 if (nr == 0 || nr == 1) {
833 lm85_write_value(client, LM85_REG_AFAN_HYST1,
834 (data->zone[0].hyst << 4)
835 | data->zone[1].hyst);
837 lm85_write_value(client, LM85_REG_AFAN_HYST2,
838 (data->zone[2].hyst << 4));
840 mutex_unlock(&data->update_lock);
844 static ssize_t show_temp_auto_temp_min(struct device *dev,
845 struct device_attribute *attr, char *buf)
847 int nr = to_sensor_dev_attr(attr)->index;
848 struct lm85_data *data = lm85_update_device(dev);
849 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
852 static ssize_t set_temp_auto_temp_min(struct device *dev,
853 struct device_attribute *attr, const char *buf, size_t count)
855 int nr = to_sensor_dev_attr(attr)->index;
856 struct i2c_client *client = to_i2c_client(dev);
857 struct lm85_data *data = i2c_get_clientdata(client);
858 long val = simple_strtol(buf, NULL, 10);
860 mutex_lock(&data->update_lock);
861 data->zone[nr].limit = TEMP_TO_REG(val);
862 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
863 data->zone[nr].limit);
865 /* Update temp_auto_max and temp_auto_range */
866 data->zone[nr].range = RANGE_TO_REG(
867 TEMP_FROM_REG(data->zone[nr].max_desired) -
868 TEMP_FROM_REG(data->zone[nr].limit));
869 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
870 ((data->zone[nr].range & 0x0f) << 4)
871 | (data->autofan[nr].freq & 0x07));
873 /* Update temp_auto_hyst and temp_auto_off */
874 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
875 data->zone[nr].limit) - TEMP_FROM_REG(
876 data->zone[nr].off_desired));
877 if (nr == 0 || nr == 1) {
878 lm85_write_value(client, LM85_REG_AFAN_HYST1,
879 (data->zone[0].hyst << 4)
880 | data->zone[1].hyst);
882 lm85_write_value(client, LM85_REG_AFAN_HYST2,
883 (data->zone[2].hyst << 4));
885 mutex_unlock(&data->update_lock);
889 static ssize_t show_temp_auto_temp_max(struct device *dev,
890 struct device_attribute *attr, char *buf)
892 int nr = to_sensor_dev_attr(attr)->index;
893 struct lm85_data *data = lm85_update_device(dev);
894 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
895 RANGE_FROM_REG(data->zone[nr].range));
898 static ssize_t set_temp_auto_temp_max(struct device *dev,
899 struct device_attribute *attr, const char *buf, size_t count)
901 int nr = to_sensor_dev_attr(attr)->index;
902 struct i2c_client *client = to_i2c_client(dev);
903 struct lm85_data *data = i2c_get_clientdata(client);
905 long val = simple_strtol(buf, NULL, 10);
907 mutex_lock(&data->update_lock);
908 min = TEMP_FROM_REG(data->zone[nr].limit);
909 data->zone[nr].max_desired = TEMP_TO_REG(val);
910 data->zone[nr].range = RANGE_TO_REG(
912 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
913 ((data->zone[nr].range & 0x0f) << 4)
914 | (data->autofan[nr].freq & 0x07));
915 mutex_unlock(&data->update_lock);
919 static ssize_t show_temp_auto_temp_crit(struct device *dev,
920 struct device_attribute *attr, char *buf)
922 int nr = to_sensor_dev_attr(attr)->index;
923 struct lm85_data *data = lm85_update_device(dev);
924 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
927 static ssize_t set_temp_auto_temp_crit(struct device *dev,
928 struct device_attribute *attr, const char *buf, size_t count)
930 int nr = to_sensor_dev_attr(attr)->index;
931 struct i2c_client *client = to_i2c_client(dev);
932 struct lm85_data *data = i2c_get_clientdata(client);
933 long val = simple_strtol(buf, NULL, 10);
935 mutex_lock(&data->update_lock);
936 data->zone[nr].critical = TEMP_TO_REG(val);
937 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
938 data->zone[nr].critical);
939 mutex_unlock(&data->update_lock);
943 #define temp_auto(offset) \
944 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
945 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
946 set_temp_auto_temp_off, offset - 1); \
947 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
948 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
949 set_temp_auto_temp_min, offset - 1); \
950 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
951 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
952 set_temp_auto_temp_max, offset - 1); \
953 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
954 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
955 set_temp_auto_temp_crit, offset - 1);
961 static int lm85_attach_adapter(struct i2c_adapter *adapter)
963 if (!(adapter->class & I2C_CLASS_HWMON))
965 return i2c_probe(adapter, &addr_data, lm85_detect);
968 static struct attribute *lm85_attributes[] = {
969 &sensor_dev_attr_fan1_input.dev_attr.attr,
970 &sensor_dev_attr_fan2_input.dev_attr.attr,
971 &sensor_dev_attr_fan3_input.dev_attr.attr,
972 &sensor_dev_attr_fan4_input.dev_attr.attr,
973 &sensor_dev_attr_fan1_min.dev_attr.attr,
974 &sensor_dev_attr_fan2_min.dev_attr.attr,
975 &sensor_dev_attr_fan3_min.dev_attr.attr,
976 &sensor_dev_attr_fan4_min.dev_attr.attr,
977 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
978 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
979 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
980 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
982 &sensor_dev_attr_pwm1.dev_attr.attr,
983 &sensor_dev_attr_pwm2.dev_attr.attr,
984 &sensor_dev_attr_pwm3.dev_attr.attr,
985 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
986 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
987 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
989 &sensor_dev_attr_in0_input.dev_attr.attr,
990 &sensor_dev_attr_in1_input.dev_attr.attr,
991 &sensor_dev_attr_in2_input.dev_attr.attr,
992 &sensor_dev_attr_in3_input.dev_attr.attr,
993 &sensor_dev_attr_in0_min.dev_attr.attr,
994 &sensor_dev_attr_in1_min.dev_attr.attr,
995 &sensor_dev_attr_in2_min.dev_attr.attr,
996 &sensor_dev_attr_in3_min.dev_attr.attr,
997 &sensor_dev_attr_in0_max.dev_attr.attr,
998 &sensor_dev_attr_in1_max.dev_attr.attr,
999 &sensor_dev_attr_in2_max.dev_attr.attr,
1000 &sensor_dev_attr_in3_max.dev_attr.attr,
1001 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1002 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1003 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1004 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1006 &sensor_dev_attr_temp1_input.dev_attr.attr,
1007 &sensor_dev_attr_temp2_input.dev_attr.attr,
1008 &sensor_dev_attr_temp3_input.dev_attr.attr,
1009 &sensor_dev_attr_temp1_min.dev_attr.attr,
1010 &sensor_dev_attr_temp2_min.dev_attr.attr,
1011 &sensor_dev_attr_temp3_min.dev_attr.attr,
1012 &sensor_dev_attr_temp1_max.dev_attr.attr,
1013 &sensor_dev_attr_temp2_max.dev_attr.attr,
1014 &sensor_dev_attr_temp3_max.dev_attr.attr,
1015 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1016 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1017 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1018 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1019 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1021 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1022 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1023 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1024 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1025 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1026 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1027 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1028 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1029 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1030 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr,
1031 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr,
1032 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr,
1034 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1035 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1036 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1037 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1038 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1039 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1040 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1041 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1042 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1043 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1044 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1045 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1048 &dev_attr_cpu0_vid.attr,
1049 &dev_attr_alarms.attr,
1053 static const struct attribute_group lm85_group = {
1054 .attrs = lm85_attributes,
1057 static struct attribute *lm85_attributes_in4[] = {
1058 &sensor_dev_attr_in4_input.dev_attr.attr,
1059 &sensor_dev_attr_in4_min.dev_attr.attr,
1060 &sensor_dev_attr_in4_max.dev_attr.attr,
1061 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1065 static const struct attribute_group lm85_group_in4 = {
1066 .attrs = lm85_attributes_in4,
1069 static struct attribute *lm85_attributes_in567[] = {
1070 &sensor_dev_attr_in5_input.dev_attr.attr,
1071 &sensor_dev_attr_in6_input.dev_attr.attr,
1072 &sensor_dev_attr_in7_input.dev_attr.attr,
1073 &sensor_dev_attr_in5_min.dev_attr.attr,
1074 &sensor_dev_attr_in6_min.dev_attr.attr,
1075 &sensor_dev_attr_in7_min.dev_attr.attr,
1076 &sensor_dev_attr_in5_max.dev_attr.attr,
1077 &sensor_dev_attr_in6_max.dev_attr.attr,
1078 &sensor_dev_attr_in7_max.dev_attr.attr,
1079 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1080 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1081 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1085 static const struct attribute_group lm85_group_in567 = {
1086 .attrs = lm85_attributes_in567,
1089 static int lm85_detect(struct i2c_adapter *adapter, int address,
1092 int company, verstep;
1093 struct i2c_client *client;
1094 struct lm85_data *data;
1096 const char *type_name;
1098 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1099 /* We need to be able to do byte I/O */
1103 /* OK. For now, we presume we have a valid client. We now create the
1104 client structure, even though we cannot fill it completely yet.
1105 But it allows us to access lm85_{read,write}_value. */
1107 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1112 client = &data->client;
1113 i2c_set_clientdata(client, data);
1114 client->addr = address;
1115 client->adapter = adapter;
1116 client->driver = &lm85_driver;
1118 /* Now, we do the remaining detection. */
1120 company = lm85_read_value(client, LM85_REG_COMPANY);
1121 verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1123 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1124 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1125 i2c_adapter_id(client->adapter), client->addr,
1128 /* If auto-detecting, Determine the chip type. */
1130 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1131 i2c_adapter_id(adapter), address);
1132 if (company == LM85_COMPANY_NATIONAL
1133 && verstep == LM85_VERSTEP_LM85C) {
1135 } else if (company == LM85_COMPANY_NATIONAL
1136 && verstep == LM85_VERSTEP_LM85B) {
1138 } else if (company == LM85_COMPANY_NATIONAL
1139 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1140 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1141 " Defaulting to LM85.\n", verstep);
1143 } else if (company == LM85_COMPANY_ANALOG_DEV
1144 && verstep == LM85_VERSTEP_ADM1027) {
1146 } else if (company == LM85_COMPANY_ANALOG_DEV
1147 && (verstep == LM85_VERSTEP_ADT7463
1148 || verstep == LM85_VERSTEP_ADT7463C)) {
1150 } else if (company == LM85_COMPANY_ANALOG_DEV
1151 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1152 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1153 " Defaulting to Generic LM85.\n", verstep);
1155 } else if (company == LM85_COMPANY_SMSC
1156 && (verstep == LM85_VERSTEP_EMC6D100_A0
1157 || verstep == LM85_VERSTEP_EMC6D100_A1)) {
1158 /* Unfortunately, we can't tell a '100 from a '101
1159 * from the registers. Since a '101 is a '100
1160 * in a package with fewer pins and therefore no
1161 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1162 * inputs read 0, then it's a '101.
1165 } else if (company == LM85_COMPANY_SMSC
1166 && verstep == LM85_VERSTEP_EMC6D102) {
1168 } else if (company == LM85_COMPANY_SMSC
1169 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1170 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1171 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1172 " Defaulting to Generic LM85.\n", verstep);
1174 } else if (kind == any_chip
1175 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1176 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1177 /* Leave kind as "any_chip" */
1179 dev_dbg(&adapter->dev, "Autodetection failed\n");
1180 /* Not an LM85... */
1181 if (kind == any_chip) { /* User used force=x,y */
1182 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1183 " found at %d,0x%02x. Try force_lm85c.\n",
1184 i2c_adapter_id(adapter), address);
1191 /* Fill in the chip specific driver values */
1194 type_name = "lm85b";
1197 type_name = "lm85c";
1200 type_name = "adm1027";
1203 type_name = "adt7463";
1206 type_name = "emc6d100";
1209 type_name = "emc6d102";
1214 strlcpy(client->name, type_name, I2C_NAME_SIZE);
1216 /* Fill in the remaining client fields */
1218 mutex_init(&data->update_lock);
1220 /* Tell the I2C layer a new client has arrived */
1221 err = i2c_attach_client(client);
1225 /* Set the VRM version */
1226 data->vrm = vid_which_vrm();
1228 /* Initialize the LM85 chip */
1229 lm85_init_client(client);
1231 /* Register sysfs hooks */
1232 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1236 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1237 as a sixth digital VID input rather than an analog input. */
1238 data->vid = lm85_read_value(client, LM85_REG_VID);
1239 if (!(kind == adt7463 && (data->vid & 0x80)))
1240 if ((err = sysfs_create_group(&client->dev.kobj,
1244 /* The EMC6D100 has 3 additional voltage inputs */
1245 if (kind == emc6d100)
1246 if ((err = sysfs_create_group(&client->dev.kobj,
1247 &lm85_group_in567)))
1250 data->hwmon_dev = hwmon_device_register(&client->dev);
1251 if (IS_ERR(data->hwmon_dev)) {
1252 err = PTR_ERR(data->hwmon_dev);
1258 /* Error out and cleanup code */
1260 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1261 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1262 if (kind == emc6d100)
1263 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1265 i2c_detach_client(client);
1272 static int lm85_detach_client(struct i2c_client *client)
1274 struct lm85_data *data = i2c_get_clientdata(client);
1275 hwmon_device_unregister(data->hwmon_dev);
1276 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1277 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1278 if (data->type == emc6d100)
1279 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1280 i2c_detach_client(client);
1286 static int lm85_read_value(struct i2c_client *client, u8 reg)
1290 /* What size location is it? */
1292 case LM85_REG_FAN(0): /* Read WORD data */
1293 case LM85_REG_FAN(1):
1294 case LM85_REG_FAN(2):
1295 case LM85_REG_FAN(3):
1296 case LM85_REG_FAN_MIN(0):
1297 case LM85_REG_FAN_MIN(1):
1298 case LM85_REG_FAN_MIN(2):
1299 case LM85_REG_FAN_MIN(3):
1300 case LM85_REG_ALARM1: /* Read both bytes at once */
1301 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1302 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1304 default: /* Read BYTE data */
1305 res = i2c_smbus_read_byte_data(client, reg);
1312 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1315 case LM85_REG_FAN(0): /* Write WORD data */
1316 case LM85_REG_FAN(1):
1317 case LM85_REG_FAN(2):
1318 case LM85_REG_FAN(3):
1319 case LM85_REG_FAN_MIN(0):
1320 case LM85_REG_FAN_MIN(1):
1321 case LM85_REG_FAN_MIN(2):
1322 case LM85_REG_FAN_MIN(3):
1323 /* NOTE: ALARM is read only, so not included here */
1324 i2c_smbus_write_byte_data(client, reg, value & 0xff);
1325 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1327 default: /* Write BYTE data */
1328 i2c_smbus_write_byte_data(client, reg, value);
1333 static void lm85_init_client(struct i2c_client *client)
1336 struct lm85_data *data = i2c_get_clientdata(client);
1338 dev_dbg(&client->dev, "Initializing device\n");
1340 /* Warn if part was not "READY" */
1341 value = lm85_read_value(client, LM85_REG_CONFIG);
1342 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1344 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1345 i2c_adapter_id(client->adapter), client->addr);
1347 if (!(value & 0x04)) {
1348 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1349 i2c_adapter_id(client->adapter), client->addr);
1352 && (data->type == adm1027
1353 || data->type == adt7463)) {
1354 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1355 "Please report this to the lm85 maintainer.\n",
1356 i2c_adapter_id(client->adapter), client->addr);
1359 /* WE INTENTIONALLY make no changes to the limits,
1360 * offsets, pwms, fans and zones. If they were
1361 * configured, we don't want to mess with them.
1362 * If they weren't, the default is 100% PWM, no
1363 * control and will suffice until 'sensors -s'
1364 * can be run by the user.
1367 /* Start monitoring */
1368 value = lm85_read_value(client, LM85_REG_CONFIG);
1369 /* Try to clear LOCK, Set START, save everything else */
1370 value = (value & ~0x02) | 0x01;
1371 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1372 lm85_write_value(client, LM85_REG_CONFIG, value);
1375 static struct lm85_data *lm85_update_device(struct device *dev)
1377 struct i2c_client *client = to_i2c_client(dev);
1378 struct lm85_data *data = i2c_get_clientdata(client);
1381 mutex_lock(&data->update_lock);
1384 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1385 /* Things that change quickly */
1386 dev_dbg(&client->dev, "Reading sensor values\n");
1388 /* Have to read extended bits first to "freeze" the
1389 * more significant bits that are read later.
1390 * There are 2 additional resolution bits per channel and we
1391 * have room for 4, so we shift them to the left.
1393 if (data->type == adm1027 || data->type == adt7463) {
1394 int ext1 = lm85_read_value(client,
1395 ADM1027_REG_EXTEND_ADC1);
1396 int ext2 = lm85_read_value(client,
1397 ADM1027_REG_EXTEND_ADC2);
1398 int val = (ext1 << 8) + ext2;
1400 for (i = 0; i <= 4; i++)
1402 ((val >> (i * 2)) & 0x03) << 2;
1404 for (i = 0; i <= 2; i++)
1406 (val >> ((i + 4) * 2)) & 0x0c;
1409 data->vid = lm85_read_value(client, LM85_REG_VID);
1411 for (i = 0; i <= 3; ++i) {
1413 lm85_read_value(client, LM85_REG_IN(i));
1415 lm85_read_value(client, LM85_REG_FAN(i));
1418 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1419 data->in[4] = lm85_read_value(client,
1423 for (i = 0; i <= 2; ++i) {
1425 lm85_read_value(client, LM85_REG_TEMP(i));
1427 lm85_read_value(client, LM85_REG_PWM(i));
1430 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1432 if (data->type == emc6d100) {
1433 /* Three more voltage sensors */
1434 for (i = 5; i <= 7; ++i) {
1435 data->in[i] = lm85_read_value(client,
1436 EMC6D100_REG_IN(i));
1438 /* More alarm bits */
1439 data->alarms |= lm85_read_value(client,
1440 EMC6D100_REG_ALARM3) << 16;
1441 } else if (data->type == emc6d102) {
1442 /* Have to read LSB bits after the MSB ones because
1443 the reading of the MSB bits has frozen the
1444 LSBs (backward from the ADM1027).
1446 int ext1 = lm85_read_value(client,
1447 EMC6D102_REG_EXTEND_ADC1);
1448 int ext2 = lm85_read_value(client,
1449 EMC6D102_REG_EXTEND_ADC2);
1450 int ext3 = lm85_read_value(client,
1451 EMC6D102_REG_EXTEND_ADC3);
1452 int ext4 = lm85_read_value(client,
1453 EMC6D102_REG_EXTEND_ADC4);
1454 data->in_ext[0] = ext3 & 0x0f;
1455 data->in_ext[1] = ext4 & 0x0f;
1456 data->in_ext[2] = ext4 >> 4;
1457 data->in_ext[3] = ext3 >> 4;
1458 data->in_ext[4] = ext2 >> 4;
1460 data->temp_ext[0] = ext1 & 0x0f;
1461 data->temp_ext[1] = ext2 & 0x0f;
1462 data->temp_ext[2] = ext1 >> 4;
1465 data->last_reading = jiffies;
1466 } /* last_reading */
1469 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1470 /* Things that don't change often */
1471 dev_dbg(&client->dev, "Reading config values\n");
1473 for (i = 0; i <= 3; ++i) {
1475 lm85_read_value(client, LM85_REG_IN_MIN(i));
1477 lm85_read_value(client, LM85_REG_IN_MAX(i));
1479 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1482 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1483 data->in_min[4] = lm85_read_value(client,
1484 LM85_REG_IN_MIN(4));
1485 data->in_max[4] = lm85_read_value(client,
1486 LM85_REG_IN_MAX(4));
1489 if (data->type == emc6d100) {
1490 for (i = 5; i <= 7; ++i) {
1491 data->in_min[i] = lm85_read_value(client,
1492 EMC6D100_REG_IN_MIN(i));
1493 data->in_max[i] = lm85_read_value(client,
1494 EMC6D100_REG_IN_MAX(i));
1498 for (i = 0; i <= 2; ++i) {
1502 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1504 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1506 data->autofan[i].config =
1507 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1508 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1509 data->autofan[i].freq = val & 0x07;
1510 data->zone[i].range = val >> 4;
1511 data->autofan[i].min_pwm =
1512 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1513 data->zone[i].limit =
1514 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1515 data->zone[i].critical =
1516 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1519 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1520 data->autofan[0].min_off = (i & 0x20) != 0;
1521 data->autofan[1].min_off = (i & 0x40) != 0;
1522 data->autofan[2].min_off = (i & 0x80) != 0;
1524 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1525 data->zone[0].hyst = i >> 4;
1526 data->zone[1].hyst = i & 0x0f;
1528 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1529 data->zone[2].hyst = i >> 4;
1531 data->last_config = jiffies;
1536 mutex_unlock(&data->update_lock);
1542 static int __init sm_lm85_init(void)
1544 return i2c_add_driver(&lm85_driver);
1547 static void __exit sm_lm85_exit(void)
1549 i2c_del_driver(&lm85_driver);
1552 MODULE_LICENSE("GPL");
1553 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1554 "Margit Schubert-While <margitsw@t-online.de>, "
1555 "Justin Thiessen <jthiessen@penguincomputing.com>");
1556 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1558 module_init(sm_lm85_init);
1559 module_exit(sm_lm85_exit);