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 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 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 Acoustic Enhancement, or Temperature smoothing encodings
194 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
195 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
196 * is ignored, or set to 0.
198 /* These are the PWM frequency encodings */
199 static int lm85_freq_map[] = { /* .1 Hz */
200 100, 150, 230, 300, 380, 470, 620, 940
203 static int FREQ_TO_REG(int freq)
207 if (freq >= lm85_freq_map[7])
209 for (i = 0; i < 7; ++i)
210 if (freq <= lm85_freq_map[i])
214 #define FREQ_FROM_REG(val) lm85_freq_map[(val) & 0x07]
216 /* Since we can't use strings, I'm abusing these numbers
217 * to stand in for the following meanings:
218 * 1 -- PWM responds to Zone 1
219 * 2 -- PWM responds to Zone 2
220 * 3 -- PWM responds to Zone 3
221 * 23 -- PWM responds to the higher temp of Zone 2 or 3
222 * 123 -- PWM responds to highest of Zone 1, 2, or 3
223 * 0 -- PWM is always at 0% (ie, off)
224 * -1 -- PWM is always at 100%
225 * -2 -- PWM responds to manual control
228 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
229 #define ZONE_FROM_REG(val) lm85_zone_map[((val) >> 5) & 0x07]
231 static int ZONE_TO_REG(int zone)
235 for (i = 0; i <= 7; ++i)
236 if (zone == lm85_zone_map[i])
238 if (i > 7) /* Not found. */
239 i = 3; /* Always 100% */
240 return (i & 0x07) << 5;
243 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
244 #define HYST_FROM_REG(val) ((val) * 1000)
246 /* Chip sampling rates
248 * Some sensors are not updated more frequently than once per second
249 * so it doesn't make sense to read them more often than that.
250 * We cache the results and return the saved data if the driver
251 * is called again before a second has elapsed.
253 * Also, there is significant configuration data for this chip
254 * given the automatic PWM fan control that is possible. There
255 * are about 47 bytes of config data to only 22 bytes of actual
256 * readings. So, we keep the config data up to date in the cache
257 * when it is written and only sample it once every 1 *minute*
259 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
260 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
262 /* LM85 can automatically adjust fan speeds based on temperature
263 * This structure encapsulates an entire Zone config. There are
264 * three zones (one for each temperature input) on the lm85
267 s8 limit; /* Low temp limit */
268 u8 hyst; /* Low limit hysteresis. (0-15) */
269 u8 range; /* Temp range, encoded */
270 s8 critical; /* "All fans ON" temp limit */
271 u8 off_desired; /* Actual "off" temperature specified. Preserved
272 * to prevent "drift" as other autofan control
275 u8 max_desired; /* Actual "max" temperature specified. Preserved
276 * to prevent "drift" as other autofan control
281 struct lm85_autofan {
282 u8 config; /* Register value */
283 u8 freq; /* PWM frequency, encoded */
284 u8 min_pwm; /* Minimum PWM value, encoded */
285 u8 min_off; /* Min PWM or OFF below "limit", flag */
288 /* For each registered chip, we need to keep some data in memory.
289 The structure is dynamically allocated. */
291 struct i2c_client client;
292 struct device *hwmon_dev;
295 struct mutex update_lock;
296 int valid; /* !=0 if following fields are valid */
297 unsigned long last_reading; /* In jiffies */
298 unsigned long last_config; /* In jiffies */
300 u8 in[8]; /* Register value */
301 u8 in_max[8]; /* Register value */
302 u8 in_min[8]; /* Register value */
303 s8 temp[3]; /* Register value */
304 s8 temp_min[3]; /* Register value */
305 s8 temp_max[3]; /* Register value */
306 u16 fan[4]; /* Register value */
307 u16 fan_min[4]; /* Register value */
308 u8 pwm[3]; /* Register value */
309 u8 temp_ext[3]; /* Decoded values */
310 u8 in_ext[8]; /* Decoded values */
311 u8 vid; /* Register value */
312 u8 vrm; /* VRM version */
313 u32 alarms; /* Register encoding, combined */
314 struct lm85_autofan autofan[3];
315 struct lm85_zone zone[3];
318 static int lm85_attach_adapter(struct i2c_adapter *adapter);
319 static int lm85_detect(struct i2c_adapter *adapter, int address,
321 static int lm85_detach_client(struct i2c_client *client);
323 static int lm85_read_value(struct i2c_client *client, u8 reg);
324 static int lm85_write_value(struct i2c_client *client, u8 reg, int value);
325 static struct lm85_data *lm85_update_device(struct device *dev);
326 static void lm85_init_client(struct i2c_client *client);
329 static struct i2c_driver lm85_driver = {
333 .attach_adapter = lm85_attach_adapter,
334 .detach_client = lm85_detach_client,
339 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
342 int nr = to_sensor_dev_attr(attr)->index;
343 struct lm85_data *data = lm85_update_device(dev);
344 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
347 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
350 int nr = to_sensor_dev_attr(attr)->index;
351 struct lm85_data *data = lm85_update_device(dev);
352 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
355 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
356 const char *buf, size_t count)
358 int nr = to_sensor_dev_attr(attr)->index;
359 struct i2c_client *client = to_i2c_client(dev);
360 struct lm85_data *data = i2c_get_clientdata(client);
361 unsigned long val = simple_strtoul(buf, NULL, 10);
363 mutex_lock(&data->update_lock);
364 data->fan_min[nr] = FAN_TO_REG(val);
365 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
366 mutex_unlock(&data->update_lock);
370 #define show_fan_offset(offset) \
371 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
372 show_fan, NULL, offset - 1); \
373 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
374 show_fan_min, set_fan_min, offset - 1)
381 /* vid, vrm, alarms */
383 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
386 struct lm85_data *data = lm85_update_device(dev);
389 if (data->type == adt7463 && (data->vid & 0x80)) {
390 /* 6-pin VID (VRM 10) */
391 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
393 /* 5-pin VID (VRM 9) */
394 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
397 return sprintf(buf, "%d\n", vid);
400 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
402 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
405 struct lm85_data *data = dev_get_drvdata(dev);
406 return sprintf(buf, "%ld\n", (long) data->vrm);
409 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
410 const char *buf, size_t count)
412 struct lm85_data *data = dev_get_drvdata(dev);
413 data->vrm = simple_strtoul(buf, NULL, 10);
417 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
419 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
422 struct lm85_data *data = lm85_update_device(dev);
423 return sprintf(buf, "%u\n", data->alarms);
426 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
428 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
431 int nr = to_sensor_dev_attr(attr)->index;
432 struct lm85_data *data = lm85_update_device(dev);
433 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
436 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
437 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
438 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
439 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
440 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
441 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
442 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
443 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
444 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
445 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
446 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
447 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
448 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
449 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
450 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
451 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
452 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
456 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
459 int nr = to_sensor_dev_attr(attr)->index;
460 struct lm85_data *data = lm85_update_device(dev);
461 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
464 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
465 const char *buf, size_t count)
467 int nr = to_sensor_dev_attr(attr)->index;
468 struct i2c_client *client = to_i2c_client(dev);
469 struct lm85_data *data = i2c_get_clientdata(client);
470 long val = simple_strtol(buf, NULL, 10);
472 mutex_lock(&data->update_lock);
473 data->pwm[nr] = PWM_TO_REG(val);
474 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
475 mutex_unlock(&data->update_lock);
479 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
482 int nr = to_sensor_dev_attr(attr)->index;
483 struct lm85_data *data = lm85_update_device(dev);
484 int pwm_zone, enable;
486 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
488 case -1: /* PWM is always at 100% */
491 case 0: /* PWM is always at 0% */
492 case -2: /* PWM responds to manual control */
495 default: /* PWM in automatic mode */
498 return sprintf(buf, "%d\n", enable);
501 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
502 *attr, const char *buf, size_t count)
504 int nr = to_sensor_dev_attr(attr)->index;
505 struct i2c_client *client = to_i2c_client(dev);
506 struct lm85_data *data = i2c_get_clientdata(client);
507 long val = simple_strtol(buf, NULL, 10);
518 /* Here we have to choose arbitrarily one of the 5 possible
519 configurations; I go for the safest */
526 mutex_lock(&data->update_lock);
527 data->autofan[nr].config = lm85_read_value(client,
528 LM85_REG_AFAN_CONFIG(nr));
529 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
531 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
532 data->autofan[nr].config);
533 mutex_unlock(&data->update_lock);
537 #define show_pwm_reg(offset) \
538 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
539 show_pwm, set_pwm, offset - 1); \
540 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
541 show_pwm_enable, set_pwm_enable, offset - 1)
549 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
552 int nr = to_sensor_dev_attr(attr)->index;
553 struct lm85_data *data = lm85_update_device(dev);
554 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
558 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
561 int nr = to_sensor_dev_attr(attr)->index;
562 struct lm85_data *data = lm85_update_device(dev);
563 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
566 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
567 const char *buf, size_t count)
569 int nr = to_sensor_dev_attr(attr)->index;
570 struct i2c_client *client = to_i2c_client(dev);
571 struct lm85_data *data = i2c_get_clientdata(client);
572 long val = simple_strtol(buf, NULL, 10);
574 mutex_lock(&data->update_lock);
575 data->in_min[nr] = INS_TO_REG(nr, val);
576 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
577 mutex_unlock(&data->update_lock);
581 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
584 int nr = to_sensor_dev_attr(attr)->index;
585 struct lm85_data *data = lm85_update_device(dev);
586 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
589 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
590 const char *buf, size_t count)
592 int nr = to_sensor_dev_attr(attr)->index;
593 struct i2c_client *client = to_i2c_client(dev);
594 struct lm85_data *data = i2c_get_clientdata(client);
595 long val = simple_strtol(buf, NULL, 10);
597 mutex_lock(&data->update_lock);
598 data->in_max[nr] = INS_TO_REG(nr, val);
599 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
600 mutex_unlock(&data->update_lock);
604 #define show_in_reg(offset) \
605 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
606 show_in, NULL, offset); \
607 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
608 show_in_min, set_in_min, offset); \
609 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
610 show_in_max, set_in_max, offset)
623 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
626 int nr = to_sensor_dev_attr(attr)->index;
627 struct lm85_data *data = lm85_update_device(dev);
628 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
629 data->temp_ext[nr]));
632 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
635 int nr = to_sensor_dev_attr(attr)->index;
636 struct lm85_data *data = lm85_update_device(dev);
637 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
640 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
641 const char *buf, size_t count)
643 int nr = to_sensor_dev_attr(attr)->index;
644 struct i2c_client *client = to_i2c_client(dev);
645 struct lm85_data *data = i2c_get_clientdata(client);
646 long val = simple_strtol(buf, NULL, 10);
648 mutex_lock(&data->update_lock);
649 data->temp_min[nr] = TEMP_TO_REG(val);
650 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
651 mutex_unlock(&data->update_lock);
655 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
658 int nr = to_sensor_dev_attr(attr)->index;
659 struct lm85_data *data = lm85_update_device(dev);
660 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
663 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
664 const char *buf, size_t count)
666 int nr = to_sensor_dev_attr(attr)->index;
667 struct i2c_client *client = to_i2c_client(dev);
668 struct lm85_data *data = i2c_get_clientdata(client);
669 long val = simple_strtol(buf, NULL, 10);
671 mutex_lock(&data->update_lock);
672 data->temp_max[nr] = TEMP_TO_REG(val);
673 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
674 mutex_unlock(&data->update_lock);
678 #define show_temp_reg(offset) \
679 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
680 show_temp, NULL, offset - 1); \
681 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
682 show_temp_min, set_temp_min, offset - 1); \
683 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
684 show_temp_max, set_temp_max, offset - 1);
691 /* Automatic PWM control */
693 static ssize_t show_pwm_auto_channels(struct device *dev,
694 struct device_attribute *attr, char *buf)
696 int nr = to_sensor_dev_attr(attr)->index;
697 struct lm85_data *data = lm85_update_device(dev);
698 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
701 static ssize_t set_pwm_auto_channels(struct device *dev,
702 struct device_attribute *attr, const char *buf, size_t count)
704 int nr = to_sensor_dev_attr(attr)->index;
705 struct i2c_client *client = to_i2c_client(dev);
706 struct lm85_data *data = i2c_get_clientdata(client);
707 long val = simple_strtol(buf, NULL, 10);
709 mutex_lock(&data->update_lock);
710 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
712 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
713 data->autofan[nr].config);
714 mutex_unlock(&data->update_lock);
718 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
719 struct device_attribute *attr, char *buf)
721 int nr = to_sensor_dev_attr(attr)->index;
722 struct lm85_data *data = lm85_update_device(dev);
723 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
726 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
727 struct device_attribute *attr, const char *buf, size_t count)
729 int nr = to_sensor_dev_attr(attr)->index;
730 struct i2c_client *client = to_i2c_client(dev);
731 struct lm85_data *data = i2c_get_clientdata(client);
732 long val = simple_strtol(buf, NULL, 10);
734 mutex_lock(&data->update_lock);
735 data->autofan[nr].min_pwm = PWM_TO_REG(val);
736 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
737 data->autofan[nr].min_pwm);
738 mutex_unlock(&data->update_lock);
742 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
743 struct device_attribute *attr, char *buf)
745 int nr = to_sensor_dev_attr(attr)->index;
746 struct lm85_data *data = lm85_update_device(dev);
747 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
750 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
751 struct device_attribute *attr, const char *buf, size_t count)
753 int nr = to_sensor_dev_attr(attr)->index;
754 struct i2c_client *client = to_i2c_client(dev);
755 struct lm85_data *data = i2c_get_clientdata(client);
756 long val = simple_strtol(buf, NULL, 10);
759 mutex_lock(&data->update_lock);
760 data->autofan[nr].min_off = val;
761 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
762 tmp &= ~(0x20 << nr);
763 if (data->autofan[nr].min_off)
765 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
766 mutex_unlock(&data->update_lock);
770 static ssize_t show_pwm_auto_pwm_freq(struct device *dev,
771 struct device_attribute *attr, char *buf)
773 int nr = to_sensor_dev_attr(attr)->index;
774 struct lm85_data *data = lm85_update_device(dev);
775 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
778 static ssize_t set_pwm_auto_pwm_freq(struct device *dev,
779 struct device_attribute *attr, const char *buf, size_t count)
781 int nr = to_sensor_dev_attr(attr)->index;
782 struct i2c_client *client = to_i2c_client(dev);
783 struct lm85_data *data = i2c_get_clientdata(client);
784 long val = simple_strtol(buf, NULL, 10);
786 mutex_lock(&data->update_lock);
787 data->autofan[nr].freq = FREQ_TO_REG(val);
788 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
789 (data->zone[nr].range << 4)
790 | data->autofan[nr].freq);
791 mutex_unlock(&data->update_lock);
795 #define pwm_auto(offset) \
796 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
797 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
798 set_pwm_auto_channels, offset - 1); \
799 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
800 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
801 set_pwm_auto_pwm_min, offset - 1); \
802 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
803 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
804 set_pwm_auto_pwm_minctl, offset - 1); \
805 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
806 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
807 set_pwm_auto_pwm_freq, offset - 1);
813 /* Temperature settings for automatic PWM control */
815 static ssize_t show_temp_auto_temp_off(struct device *dev,
816 struct device_attribute *attr, char *buf)
818 int nr = to_sensor_dev_attr(attr)->index;
819 struct lm85_data *data = lm85_update_device(dev);
820 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
821 HYST_FROM_REG(data->zone[nr].hyst));
824 static ssize_t set_temp_auto_temp_off(struct device *dev,
825 struct device_attribute *attr, const char *buf, size_t count)
827 int nr = to_sensor_dev_attr(attr)->index;
828 struct i2c_client *client = to_i2c_client(dev);
829 struct lm85_data *data = i2c_get_clientdata(client);
831 long val = simple_strtol(buf, NULL, 10);
833 mutex_lock(&data->update_lock);
834 min = TEMP_FROM_REG(data->zone[nr].limit);
835 data->zone[nr].off_desired = TEMP_TO_REG(val);
836 data->zone[nr].hyst = HYST_TO_REG(min - val);
837 if (nr == 0 || nr == 1) {
838 lm85_write_value(client, LM85_REG_AFAN_HYST1,
839 (data->zone[0].hyst << 4)
840 | data->zone[1].hyst);
842 lm85_write_value(client, LM85_REG_AFAN_HYST2,
843 (data->zone[2].hyst << 4));
845 mutex_unlock(&data->update_lock);
849 static ssize_t show_temp_auto_temp_min(struct device *dev,
850 struct device_attribute *attr, char *buf)
852 int nr = to_sensor_dev_attr(attr)->index;
853 struct lm85_data *data = lm85_update_device(dev);
854 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
857 static ssize_t set_temp_auto_temp_min(struct device *dev,
858 struct device_attribute *attr, const char *buf, size_t count)
860 int nr = to_sensor_dev_attr(attr)->index;
861 struct i2c_client *client = to_i2c_client(dev);
862 struct lm85_data *data = i2c_get_clientdata(client);
863 long val = simple_strtol(buf, NULL, 10);
865 mutex_lock(&data->update_lock);
866 data->zone[nr].limit = TEMP_TO_REG(val);
867 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
868 data->zone[nr].limit);
870 /* Update temp_auto_max and temp_auto_range */
871 data->zone[nr].range = RANGE_TO_REG(
872 TEMP_FROM_REG(data->zone[nr].max_desired) -
873 TEMP_FROM_REG(data->zone[nr].limit));
874 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
875 ((data->zone[nr].range & 0x0f) << 4)
876 | (data->autofan[nr].freq & 0x07));
878 /* Update temp_auto_hyst and temp_auto_off */
879 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
880 data->zone[nr].limit) - TEMP_FROM_REG(
881 data->zone[nr].off_desired));
882 if (nr == 0 || nr == 1) {
883 lm85_write_value(client, LM85_REG_AFAN_HYST1,
884 (data->zone[0].hyst << 4)
885 | data->zone[1].hyst);
887 lm85_write_value(client, LM85_REG_AFAN_HYST2,
888 (data->zone[2].hyst << 4));
890 mutex_unlock(&data->update_lock);
894 static ssize_t show_temp_auto_temp_max(struct device *dev,
895 struct device_attribute *attr, char *buf)
897 int nr = to_sensor_dev_attr(attr)->index;
898 struct lm85_data *data = lm85_update_device(dev);
899 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
900 RANGE_FROM_REG(data->zone[nr].range));
903 static ssize_t set_temp_auto_temp_max(struct device *dev,
904 struct device_attribute *attr, const char *buf, size_t count)
906 int nr = to_sensor_dev_attr(attr)->index;
907 struct i2c_client *client = to_i2c_client(dev);
908 struct lm85_data *data = i2c_get_clientdata(client);
910 long val = simple_strtol(buf, NULL, 10);
912 mutex_lock(&data->update_lock);
913 min = TEMP_FROM_REG(data->zone[nr].limit);
914 data->zone[nr].max_desired = TEMP_TO_REG(val);
915 data->zone[nr].range = RANGE_TO_REG(
917 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
918 ((data->zone[nr].range & 0x0f) << 4)
919 | (data->autofan[nr].freq & 0x07));
920 mutex_unlock(&data->update_lock);
924 static ssize_t show_temp_auto_temp_crit(struct device *dev,
925 struct device_attribute *attr, char *buf)
927 int nr = to_sensor_dev_attr(attr)->index;
928 struct lm85_data *data = lm85_update_device(dev);
929 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
932 static ssize_t set_temp_auto_temp_crit(struct device *dev,
933 struct device_attribute *attr, const char *buf, size_t count)
935 int nr = to_sensor_dev_attr(attr)->index;
936 struct i2c_client *client = to_i2c_client(dev);
937 struct lm85_data *data = i2c_get_clientdata(client);
938 long val = simple_strtol(buf, NULL, 10);
940 mutex_lock(&data->update_lock);
941 data->zone[nr].critical = TEMP_TO_REG(val);
942 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
943 data->zone[nr].critical);
944 mutex_unlock(&data->update_lock);
948 #define temp_auto(offset) \
949 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
950 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
951 set_temp_auto_temp_off, offset - 1); \
952 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
953 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
954 set_temp_auto_temp_min, offset - 1); \
955 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
956 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
957 set_temp_auto_temp_max, offset - 1); \
958 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
959 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
960 set_temp_auto_temp_crit, offset - 1);
966 static int lm85_attach_adapter(struct i2c_adapter *adapter)
968 if (!(adapter->class & I2C_CLASS_HWMON))
970 return i2c_probe(adapter, &addr_data, lm85_detect);
973 static struct attribute *lm85_attributes[] = {
974 &sensor_dev_attr_fan1_input.dev_attr.attr,
975 &sensor_dev_attr_fan2_input.dev_attr.attr,
976 &sensor_dev_attr_fan3_input.dev_attr.attr,
977 &sensor_dev_attr_fan4_input.dev_attr.attr,
978 &sensor_dev_attr_fan1_min.dev_attr.attr,
979 &sensor_dev_attr_fan2_min.dev_attr.attr,
980 &sensor_dev_attr_fan3_min.dev_attr.attr,
981 &sensor_dev_attr_fan4_min.dev_attr.attr,
982 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
983 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
984 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
985 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
987 &sensor_dev_attr_pwm1.dev_attr.attr,
988 &sensor_dev_attr_pwm2.dev_attr.attr,
989 &sensor_dev_attr_pwm3.dev_attr.attr,
990 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
991 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
992 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
994 &sensor_dev_attr_in0_input.dev_attr.attr,
995 &sensor_dev_attr_in1_input.dev_attr.attr,
996 &sensor_dev_attr_in2_input.dev_attr.attr,
997 &sensor_dev_attr_in3_input.dev_attr.attr,
998 &sensor_dev_attr_in0_min.dev_attr.attr,
999 &sensor_dev_attr_in1_min.dev_attr.attr,
1000 &sensor_dev_attr_in2_min.dev_attr.attr,
1001 &sensor_dev_attr_in3_min.dev_attr.attr,
1002 &sensor_dev_attr_in0_max.dev_attr.attr,
1003 &sensor_dev_attr_in1_max.dev_attr.attr,
1004 &sensor_dev_attr_in2_max.dev_attr.attr,
1005 &sensor_dev_attr_in3_max.dev_attr.attr,
1006 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1007 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1008 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1009 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1011 &sensor_dev_attr_temp1_input.dev_attr.attr,
1012 &sensor_dev_attr_temp2_input.dev_attr.attr,
1013 &sensor_dev_attr_temp3_input.dev_attr.attr,
1014 &sensor_dev_attr_temp1_min.dev_attr.attr,
1015 &sensor_dev_attr_temp2_min.dev_attr.attr,
1016 &sensor_dev_attr_temp3_min.dev_attr.attr,
1017 &sensor_dev_attr_temp1_max.dev_attr.attr,
1018 &sensor_dev_attr_temp2_max.dev_attr.attr,
1019 &sensor_dev_attr_temp3_max.dev_attr.attr,
1020 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1021 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1022 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1023 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1024 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1026 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1027 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1028 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1029 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1030 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1031 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1032 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1033 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1034 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1035 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr,
1036 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr,
1037 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr,
1039 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1040 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1041 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1042 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1043 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1044 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1045 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1046 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1047 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1048 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1049 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1050 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1053 &dev_attr_cpu0_vid.attr,
1054 &dev_attr_alarms.attr,
1058 static const struct attribute_group lm85_group = {
1059 .attrs = lm85_attributes,
1062 static struct attribute *lm85_attributes_in4[] = {
1063 &sensor_dev_attr_in4_input.dev_attr.attr,
1064 &sensor_dev_attr_in4_min.dev_attr.attr,
1065 &sensor_dev_attr_in4_max.dev_attr.attr,
1066 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1070 static const struct attribute_group lm85_group_in4 = {
1071 .attrs = lm85_attributes_in4,
1074 static struct attribute *lm85_attributes_in567[] = {
1075 &sensor_dev_attr_in5_input.dev_attr.attr,
1076 &sensor_dev_attr_in6_input.dev_attr.attr,
1077 &sensor_dev_attr_in7_input.dev_attr.attr,
1078 &sensor_dev_attr_in5_min.dev_attr.attr,
1079 &sensor_dev_attr_in6_min.dev_attr.attr,
1080 &sensor_dev_attr_in7_min.dev_attr.attr,
1081 &sensor_dev_attr_in5_max.dev_attr.attr,
1082 &sensor_dev_attr_in6_max.dev_attr.attr,
1083 &sensor_dev_attr_in7_max.dev_attr.attr,
1084 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1085 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1086 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1090 static const struct attribute_group lm85_group_in567 = {
1091 .attrs = lm85_attributes_in567,
1094 static int lm85_detect(struct i2c_adapter *adapter, int address,
1097 int company, verstep;
1098 struct i2c_client *new_client = NULL;
1099 struct lm85_data *data;
1101 const char *type_name = "";
1103 if (!i2c_check_functionality(adapter,
1104 I2C_FUNC_SMBUS_BYTE_DATA)) {
1105 /* We need to be able to do byte I/O */
1109 /* OK. For now, we presume we have a valid client. We now create the
1110 client structure, even though we cannot fill it completely yet.
1111 But it allows us to access lm85_{read,write}_value. */
1113 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1118 new_client = &data->client;
1119 i2c_set_clientdata(new_client, data);
1120 new_client->addr = address;
1121 new_client->adapter = adapter;
1122 new_client->driver = &lm85_driver;
1123 new_client->flags = 0;
1125 /* Now, we do the remaining detection. */
1127 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1128 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1130 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1131 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1132 i2c_adapter_id(new_client->adapter), new_client->addr,
1135 /* If auto-detecting, Determine the chip type. */
1137 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1138 i2c_adapter_id(adapter), address);
1139 if (company == LM85_COMPANY_NATIONAL
1140 && verstep == LM85_VERSTEP_LM85C) {
1142 } else if (company == LM85_COMPANY_NATIONAL
1143 && verstep == LM85_VERSTEP_LM85B) {
1145 } else if (company == LM85_COMPANY_NATIONAL
1146 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1147 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1148 " Defaulting to LM85.\n", verstep);
1150 } else if (company == LM85_COMPANY_ANALOG_DEV
1151 && verstep == LM85_VERSTEP_ADM1027) {
1153 } else if (company == LM85_COMPANY_ANALOG_DEV
1154 && (verstep == LM85_VERSTEP_ADT7463
1155 || verstep == LM85_VERSTEP_ADT7463C)) {
1157 } else if (company == LM85_COMPANY_ANALOG_DEV
1158 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1159 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1160 " Defaulting to Generic LM85.\n", verstep);
1162 } else if (company == LM85_COMPANY_SMSC
1163 && (verstep == LM85_VERSTEP_EMC6D100_A0
1164 || verstep == LM85_VERSTEP_EMC6D100_A1)) {
1165 /* Unfortunately, we can't tell a '100 from a '101
1166 * from the registers. Since a '101 is a '100
1167 * in a package with fewer pins and therefore no
1168 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1169 * inputs read 0, then it's a '101.
1172 } else if (company == LM85_COMPANY_SMSC
1173 && verstep == LM85_VERSTEP_EMC6D102) {
1175 } else if (company == LM85_COMPANY_SMSC
1176 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1177 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1178 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1179 " Defaulting to Generic LM85.\n", verstep);
1181 } else if (kind == any_chip
1182 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1183 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1184 /* Leave kind as "any_chip" */
1186 dev_dbg(&adapter->dev, "Autodetection failed\n");
1187 /* Not an LM85... */
1188 if (kind == any_chip) { /* User used force=x,y */
1189 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1190 " found at %d,0x%02x. Try force_lm85c.\n",
1191 i2c_adapter_id(adapter), address);
1198 /* Fill in the chip specific driver values */
1199 if (kind == any_chip)
1201 else if (kind == lm85b)
1202 type_name = "lm85b";
1203 else if (kind == lm85c)
1204 type_name = "lm85c";
1205 else if (kind == adm1027)
1206 type_name = "adm1027";
1207 else if (kind == adt7463)
1208 type_name = "adt7463";
1209 else if (kind == emc6d100)
1210 type_name = "emc6d100";
1211 else if (kind == emc6d102)
1212 type_name = "emc6d102";
1213 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1215 /* Fill in the remaining client fields */
1218 mutex_init(&data->update_lock);
1220 /* Tell the I2C layer a new client has arrived */
1221 if ((err = i2c_attach_client(new_client)))
1224 /* Set the VRM version */
1225 data->vrm = vid_which_vrm();
1227 /* Initialize the LM85 chip */
1228 lm85_init_client(new_client);
1230 /* Register sysfs hooks */
1231 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group)))
1234 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1235 as a sixth digital VID input rather than an analog input. */
1236 data->vid = lm85_read_value(new_client, LM85_REG_VID);
1237 if (!(kind == adt7463 && (data->vid & 0x80)))
1238 if ((err = sysfs_create_group(&new_client->dev.kobj,
1242 /* The EMC6D100 has 3 additional voltage inputs */
1243 if (kind == emc6d100)
1244 if ((err = sysfs_create_group(&new_client->dev.kobj,
1245 &lm85_group_in567)))
1248 data->hwmon_dev = hwmon_device_register(&new_client->dev);
1249 if (IS_ERR(data->hwmon_dev)) {
1250 err = PTR_ERR(data->hwmon_dev);
1256 /* Error out and cleanup code */
1258 sysfs_remove_group(&new_client->dev.kobj, &lm85_group);
1259 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in4);
1260 if (kind == emc6d100)
1261 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in567);
1263 i2c_detach_client(new_client);
1270 static int lm85_detach_client(struct i2c_client *client)
1272 struct lm85_data *data = i2c_get_clientdata(client);
1273 hwmon_device_unregister(data->hwmon_dev);
1274 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1275 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1276 if (data->type == emc6d100)
1277 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1278 i2c_detach_client(client);
1284 static int lm85_read_value(struct i2c_client *client, u8 reg)
1288 /* What size location is it? */
1290 case LM85_REG_FAN(0): /* Read WORD data */
1291 case LM85_REG_FAN(1):
1292 case LM85_REG_FAN(2):
1293 case LM85_REG_FAN(3):
1294 case LM85_REG_FAN_MIN(0):
1295 case LM85_REG_FAN_MIN(1):
1296 case LM85_REG_FAN_MIN(2):
1297 case LM85_REG_FAN_MIN(3):
1298 case LM85_REG_ALARM1: /* Read both bytes at once */
1299 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1300 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1302 default: /* Read BYTE data */
1303 res = i2c_smbus_read_byte_data(client, reg);
1310 static int 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 res = i2c_smbus_write_byte_data(client, reg, value & 0xff);
1325 res |= i2c_smbus_write_byte_data(client, reg + 1,
1326 (value >> 8) & 0xff);
1328 default: /* Write BYTE data */
1329 res = i2c_smbus_write_byte_data(client, reg, value);
1336 static void lm85_init_client(struct i2c_client *client)
1339 struct lm85_data *data = i2c_get_clientdata(client);
1341 dev_dbg(&client->dev, "Initializing device\n");
1343 /* Warn if part was not "READY" */
1344 value = lm85_read_value(client, LM85_REG_CONFIG);
1345 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1347 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1348 i2c_adapter_id(client->adapter), client->addr);
1350 if (!(value & 0x04)) {
1351 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1352 i2c_adapter_id(client->adapter), client->addr);
1355 && (data->type == adm1027
1356 || data->type == adt7463)) {
1357 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1358 "Please report this to the lm85 maintainer.\n",
1359 i2c_adapter_id(client->adapter), client->addr);
1362 /* WE INTENTIONALLY make no changes to the limits,
1363 * offsets, pwms, fans and zones. If they were
1364 * configured, we don't want to mess with them.
1365 * If they weren't, the default is 100% PWM, no
1366 * control and will suffice until 'sensors -s'
1367 * can be run by the user.
1370 /* Start monitoring */
1371 value = lm85_read_value(client, LM85_REG_CONFIG);
1372 /* Try to clear LOCK, Set START, save everything else */
1373 value = (value & ~0x02) | 0x01;
1374 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1375 lm85_write_value(client, LM85_REG_CONFIG, value);
1378 static struct lm85_data *lm85_update_device(struct device *dev)
1380 struct i2c_client *client = to_i2c_client(dev);
1381 struct lm85_data *data = i2c_get_clientdata(client);
1384 mutex_lock(&data->update_lock);
1387 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1388 /* Things that change quickly */
1389 dev_dbg(&client->dev, "Reading sensor values\n");
1391 /* Have to read extended bits first to "freeze" the
1392 * more significant bits that are read later.
1393 * There are 2 additional resolution bits per channel and we
1394 * have room for 4, so we shift them to the left.
1396 if (data->type == adm1027 || data->type == adt7463) {
1397 int ext1 = lm85_read_value(client,
1398 ADM1027_REG_EXTEND_ADC1);
1399 int ext2 = lm85_read_value(client,
1400 ADM1027_REG_EXTEND_ADC2);
1401 int val = (ext1 << 8) + ext2;
1403 for (i = 0; i <= 4; i++)
1405 ((val >> (i * 2)) & 0x03) << 2;
1407 for (i = 0; i <= 2; i++)
1409 (val >> ((i + 4) * 2)) & 0x0c;
1412 data->vid = lm85_read_value(client, LM85_REG_VID);
1414 for (i = 0; i <= 3; ++i) {
1416 lm85_read_value(client, LM85_REG_IN(i));
1419 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1420 data->in[4] = lm85_read_value(client,
1424 for (i = 0; i <= 3; ++i) {
1426 lm85_read_value(client, LM85_REG_FAN(i));
1429 for (i = 0; i <= 2; ++i) {
1431 lm85_read_value(client, LM85_REG_TEMP(i));
1434 for (i = 0; i <= 2; ++i) {
1436 lm85_read_value(client, LM85_REG_PWM(i));
1439 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1441 if (data->type == emc6d100) {
1442 /* Three more voltage sensors */
1443 for (i = 5; i <= 7; ++i) {
1444 data->in[i] = lm85_read_value(client,
1445 EMC6D100_REG_IN(i));
1447 /* More alarm bits */
1448 data->alarms |= lm85_read_value(client,
1449 EMC6D100_REG_ALARM3) << 16;
1450 } else if (data->type == emc6d102) {
1451 /* Have to read LSB bits after the MSB ones because
1452 the reading of the MSB bits has frozen the
1453 LSBs (backward from the ADM1027).
1455 int ext1 = lm85_read_value(client,
1456 EMC6D102_REG_EXTEND_ADC1);
1457 int ext2 = lm85_read_value(client,
1458 EMC6D102_REG_EXTEND_ADC2);
1459 int ext3 = lm85_read_value(client,
1460 EMC6D102_REG_EXTEND_ADC3);
1461 int ext4 = lm85_read_value(client,
1462 EMC6D102_REG_EXTEND_ADC4);
1463 data->in_ext[0] = ext3 & 0x0f;
1464 data->in_ext[1] = ext4 & 0x0f;
1465 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1466 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1467 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1469 data->temp_ext[0] = ext1 & 0x0f;
1470 data->temp_ext[1] = ext2 & 0x0f;
1471 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1474 data->last_reading = jiffies;
1475 } /* last_reading */
1478 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1479 /* Things that don't change often */
1480 dev_dbg(&client->dev, "Reading config values\n");
1482 for (i = 0; i <= 3; ++i) {
1484 lm85_read_value(client, LM85_REG_IN_MIN(i));
1486 lm85_read_value(client, LM85_REG_IN_MAX(i));
1489 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1490 data->in_min[4] = lm85_read_value(client,
1491 LM85_REG_IN_MIN(4));
1492 data->in_max[4] = lm85_read_value(client,
1493 LM85_REG_IN_MAX(4));
1496 if (data->type == emc6d100) {
1497 for (i = 5; i <= 7; ++i) {
1498 data->in_min[i] = lm85_read_value(client,
1499 EMC6D100_REG_IN_MIN(i));
1500 data->in_max[i] = lm85_read_value(client,
1501 EMC6D100_REG_IN_MAX(i));
1505 for (i = 0; i <= 3; ++i) {
1507 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1510 for (i = 0; i <= 2; ++i) {
1512 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1514 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1517 for (i = 0; i <= 2; ++i) {
1519 data->autofan[i].config =
1520 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1521 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1522 data->autofan[i].freq = val & 0x07;
1523 data->zone[i].range = (val >> 4) & 0x0f;
1524 data->autofan[i].min_pwm =
1525 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1526 data->zone[i].limit =
1527 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1528 data->zone[i].critical =
1529 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1532 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1533 data->autofan[0].min_off = (i & 0x20) != 0;
1534 data->autofan[1].min_off = (i & 0x40) != 0;
1535 data->autofan[2].min_off = (i & 0x80) != 0;
1537 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1538 data->zone[0].hyst = (i >> 4) & 0x0f;
1539 data->zone[1].hyst = i & 0x0f;
1541 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1542 data->zone[2].hyst = (i >> 4) & 0x0f;
1544 data->last_config = jiffies;
1549 mutex_unlock(&data->update_lock);
1555 static int __init sm_lm85_init(void)
1557 return i2c_add_driver(&lm85_driver);
1560 static void __exit sm_lm85_exit(void)
1562 i2c_del_driver(&lm85_driver);
1565 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1566 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1567 * post 2.7.0 CVS changes.
1569 MODULE_LICENSE("GPL");
1570 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1571 "Margit Schubert-While <margitsw@t-online.de>, "
1572 "Justin Thiessen <jthiessen@penguincomputing.com");
1573 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1575 module_init(sm_lm85_init);
1576 module_exit(sm_lm85_exit);