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 ADT7463_REG_OPPOINT(nr) (0x33 + (nr))
61 #define ADT7463_REG_TMIN_CTL1 0x36
62 #define ADT7463_REG_TMIN_CTL2 0x37
64 #define LM85_REG_DEVICE 0x3d
65 #define LM85_REG_COMPANY 0x3e
66 #define LM85_REG_VERSTEP 0x3f
67 /* These are the recognized values for the above regs */
68 #define LM85_DEVICE_ADX 0x27
69 #define LM85_COMPANY_NATIONAL 0x01
70 #define LM85_COMPANY_ANALOG_DEV 0x41
71 #define LM85_COMPANY_SMSC 0x5c
72 #define LM85_VERSTEP_VMASK 0xf0
73 #define LM85_VERSTEP_GENERIC 0x60
74 #define LM85_VERSTEP_LM85C 0x60
75 #define LM85_VERSTEP_LM85B 0x62
76 #define LM85_VERSTEP_ADM1027 0x60
77 #define LM85_VERSTEP_ADT7463 0x62
78 #define LM85_VERSTEP_ADT7463C 0x6A
79 #define LM85_VERSTEP_EMC6D100_A0 0x60
80 #define LM85_VERSTEP_EMC6D100_A1 0x61
81 #define LM85_VERSTEP_EMC6D102 0x65
83 #define LM85_REG_CONFIG 0x40
85 #define LM85_REG_ALARM1 0x41
86 #define LM85_REG_ALARM2 0x42
88 #define LM85_REG_VID 0x43
90 /* Automated FAN control */
91 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
92 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
93 #define LM85_REG_AFAN_SPIKE1 0x62
94 #define LM85_REG_AFAN_SPIKE2 0x63
95 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
96 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
97 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
98 #define LM85_REG_AFAN_HYST1 0x6d
99 #define LM85_REG_AFAN_HYST2 0x6e
101 #define LM85_REG_TACH_MODE 0x74
102 #define LM85_REG_SPINUP_CTL 0x75
104 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr))
105 #define ADM1027_REG_CONFIG2 0x73
106 #define ADM1027_REG_INTMASK1 0x74
107 #define ADM1027_REG_INTMASK2 0x75
108 #define ADM1027_REG_EXTEND_ADC1 0x76
109 #define ADM1027_REG_EXTEND_ADC2 0x77
110 #define ADM1027_REG_CONFIG3 0x78
111 #define ADM1027_REG_FAN_PPR 0x7b
113 #define ADT7463_REG_THERM 0x79
114 #define ADT7463_REG_THERM_LIMIT 0x7A
116 #define EMC6D100_REG_ALARM3 0x7d
117 /* IN5, IN6 and IN7 */
118 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
119 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
120 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
121 #define EMC6D102_REG_EXTEND_ADC1 0x85
122 #define EMC6D102_REG_EXTEND_ADC2 0x86
123 #define EMC6D102_REG_EXTEND_ADC3 0x87
124 #define EMC6D102_REG_EXTEND_ADC4 0x88
127 /* Conversions. Rounding and limit checking is only done on the TO_REG
128 variants. Note that you should be a bit careful with which arguments
129 these macros are called: arguments may be evaluated more than once.
132 /* IN are scaled acording to built-in resistors */
133 static int lm85_scaling[] = { /* .001 Volts */
134 2500, 2250, 3300, 5000, 12000,
135 3300, 1500, 1800 /*EMC6D100*/
137 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
139 #define INS_TO_REG(n, val) \
140 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
142 #define INSEXT_FROM_REG(n, val, ext) \
143 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
145 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
147 /* FAN speed is measured using 90kHz clock */
148 static inline u16 FAN_TO_REG(unsigned long val)
152 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
154 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
157 /* Temperature is reported in .001 degC increments */
158 #define TEMP_TO_REG(val) \
159 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
160 #define TEMPEXT_FROM_REG(val, ext) \
161 SCALE(((val) << 4) + (ext), 16, 1000)
162 #define TEMP_FROM_REG(val) ((val) * 1000)
164 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
165 #define PWM_FROM_REG(val) (val)
168 /* ZONEs have the following parameters:
169 * Limit (low) temp, 1. degC
170 * Hysteresis (below limit), 1. degC (0-15)
171 * Range of speed control, .1 degC (2-80)
172 * Critical (high) temp, 1. degC
174 * FAN PWMs have the following parameters:
175 * Reference Zone, 1, 2, 3, etc.
176 * Spinup time, .05 sec
177 * PWM value at limit/low temp, 1 count
178 * PWM Frequency, 1. Hz
179 * PWM is Min or OFF below limit, flag
180 * Invert PWM output, flag
182 * Some chips filter the temp, others the fan.
183 * Filter constant (or disabled) .1 seconds
186 /* These are the zone temperature range encodings in .001 degree C */
187 static int lm85_range_map[] = {
188 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
189 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
192 static int RANGE_TO_REG(int range)
196 if (range >= lm85_range_map[15])
199 /* Find the closest match */
200 for (i = 14; i >= 0; --i) {
201 if (range >= lm85_range_map[i]) {
202 if ((lm85_range_map[i + 1] - range) <
203 (range - lm85_range_map[i]))
211 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
213 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
214 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
215 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
216 * is ignored, or set to 0.
218 /* These are the PWM frequency encodings */
219 static int lm85_freq_map[] = { /* .1 Hz */
220 100, 150, 230, 300, 380, 470, 620, 940
223 static int FREQ_TO_REG(int freq)
227 if (freq >= lm85_freq_map[7])
229 for (i = 0; i < 7; ++i)
230 if (freq <= lm85_freq_map[i])
234 #define FREQ_FROM_REG(val) lm85_freq_map[(val) & 0x07]
236 /* Since we can't use strings, I'm abusing these numbers
237 * to stand in for the following meanings:
238 * 1 -- PWM responds to Zone 1
239 * 2 -- PWM responds to Zone 2
240 * 3 -- PWM responds to Zone 3
241 * 23 -- PWM responds to the higher temp of Zone 2 or 3
242 * 123 -- PWM responds to highest of Zone 1, 2, or 3
243 * 0 -- PWM is always at 0% (ie, off)
244 * -1 -- PWM is always at 100%
245 * -2 -- PWM responds to manual control
248 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
249 #define ZONE_FROM_REG(val) lm85_zone_map[((val) >> 5) & 0x07]
251 static int ZONE_TO_REG(int zone)
255 for (i = 0; i <= 7; ++i)
256 if (zone == lm85_zone_map[i])
258 if (i > 7) /* Not found. */
259 i = 3; /* Always 100% */
260 return (i & 0x07) << 5;
263 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
264 #define HYST_FROM_REG(val) ((val) * 1000)
266 #define OFFSET_TO_REG(val) SENSORS_LIMIT((val) / 25, -127, 127)
267 #define OFFSET_FROM_REG(val) ((val) * 25)
269 #define PPR_MASK(fan) (0x03 << ((fan) * 2))
270 #define PPR_TO_REG(val, fan) (SENSORS_LIMIT((val) - 1, 0, 3) << ((fan) * 2))
271 #define PPR_FROM_REG(val, fan) ((((val) >> ((fan) * 2)) & 0x03) + 1)
273 /* Chip sampling rates
275 * Some sensors are not updated more frequently than once per second
276 * so it doesn't make sense to read them more often than that.
277 * We cache the results and return the saved data if the driver
278 * is called again before a second has elapsed.
280 * Also, there is significant configuration data for this chip
281 * given the automatic PWM fan control that is possible. There
282 * are about 47 bytes of config data to only 22 bytes of actual
283 * readings. So, we keep the config data up to date in the cache
284 * when it is written and only sample it once every 1 *minute*
286 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
287 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
289 /* LM85 can automatically adjust fan speeds based on temperature
290 * This structure encapsulates an entire Zone config. There are
291 * three zones (one for each temperature input) on the lm85
294 s8 limit; /* Low temp limit */
295 u8 hyst; /* Low limit hysteresis. (0-15) */
296 u8 range; /* Temp range, encoded */
297 s8 critical; /* "All fans ON" temp limit */
298 u8 off_desired; /* Actual "off" temperature specified. Preserved
299 * to prevent "drift" as other autofan control
302 u8 max_desired; /* Actual "max" temperature specified. Preserved
303 * to prevent "drift" as other autofan control
308 struct lm85_autofan {
309 u8 config; /* Register value */
310 u8 freq; /* PWM frequency, encoded */
311 u8 min_pwm; /* Minimum PWM value, encoded */
312 u8 min_off; /* Min PWM or OFF below "limit", flag */
315 /* For each registered chip, we need to keep some data in memory.
316 The structure is dynamically allocated. */
318 struct i2c_client client;
319 struct device *hwmon_dev;
322 struct mutex update_lock;
323 int valid; /* !=0 if following fields are valid */
324 unsigned long last_reading; /* In jiffies */
325 unsigned long last_config; /* In jiffies */
327 u8 in[8]; /* Register value */
328 u8 in_max[8]; /* Register value */
329 u8 in_min[8]; /* Register value */
330 s8 temp[3]; /* Register value */
331 s8 temp_min[3]; /* Register value */
332 s8 temp_max[3]; /* Register value */
333 s8 temp_offset[3]; /* Register value */
334 u16 fan[4]; /* Register value */
335 u16 fan_min[4]; /* Register value */
336 u8 pwm[3]; /* Register value */
337 u8 spinup_ctl; /* Register encoding, combined */
338 u8 tach_mode; /* Register encoding, combined */
339 u8 temp_ext[3]; /* Decoded values */
340 u8 in_ext[8]; /* Decoded values */
341 u8 fan_ppr; /* Register value */
342 u8 smooth[3]; /* Register encoding */
343 u8 vid; /* Register value */
344 u8 vrm; /* VRM version */
345 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
346 u8 oppoint[3]; /* Register value */
347 u16 tmin_ctl; /* Register value */
348 unsigned long therm_total; /* Cummulative therm count */
349 u8 therm_limit; /* Register value */
350 u32 alarms; /* Register encoding, combined */
351 struct lm85_autofan autofan[3];
352 struct lm85_zone zone[3];
355 static int lm85_attach_adapter(struct i2c_adapter *adapter);
356 static int lm85_detect(struct i2c_adapter *adapter, int address,
358 static int lm85_detach_client(struct i2c_client *client);
360 static int lm85_read_value(struct i2c_client *client, u8 reg);
361 static int lm85_write_value(struct i2c_client *client, u8 reg, int value);
362 static struct lm85_data *lm85_update_device(struct device *dev);
363 static void lm85_init_client(struct i2c_client *client);
366 static struct i2c_driver lm85_driver = {
370 .attach_adapter = lm85_attach_adapter,
371 .detach_client = lm85_detach_client,
376 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
379 int nr = to_sensor_dev_attr(attr)->index;
380 struct lm85_data *data = lm85_update_device(dev);
381 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
384 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
387 int nr = to_sensor_dev_attr(attr)->index;
388 struct lm85_data *data = lm85_update_device(dev);
389 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
392 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
393 const char *buf, size_t count)
395 int nr = to_sensor_dev_attr(attr)->index;
396 struct i2c_client *client = to_i2c_client(dev);
397 struct lm85_data *data = i2c_get_clientdata(client);
398 unsigned long val = simple_strtoul(buf, NULL, 10);
400 mutex_lock(&data->update_lock);
401 data->fan_min[nr] = FAN_TO_REG(val);
402 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
403 mutex_unlock(&data->update_lock);
407 #define show_fan_offset(offset) \
408 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
409 show_fan, NULL, offset - 1); \
410 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
411 show_fan_min, set_fan_min, offset - 1)
418 /* vid, vrm, alarms */
420 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
423 struct lm85_data *data = lm85_update_device(dev);
426 if (data->type == adt7463 && (data->vid & 0x80)) {
427 /* 6-pin VID (VRM 10) */
428 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
430 /* 5-pin VID (VRM 9) */
431 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
434 return sprintf(buf, "%d\n", vid);
437 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
439 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
442 struct lm85_data *data = dev_get_drvdata(dev);
443 return sprintf(buf, "%ld\n", (long) data->vrm);
446 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
447 const char *buf, size_t count)
449 struct lm85_data *data = dev_get_drvdata(dev);
450 data->vrm = simple_strtoul(buf, NULL, 10);
454 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
456 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
459 struct lm85_data *data = lm85_update_device(dev);
460 return sprintf(buf, "%u\n", data->alarms);
463 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
465 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
468 int nr = to_sensor_dev_attr(attr)->index;
469 struct lm85_data *data = lm85_update_device(dev);
470 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
473 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
474 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
475 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
476 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
477 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
478 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
479 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
480 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
481 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
482 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
483 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
484 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
485 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
486 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
487 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
488 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
489 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
493 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
496 int nr = to_sensor_dev_attr(attr)->index;
497 struct lm85_data *data = lm85_update_device(dev);
498 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
501 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
502 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);
509 mutex_lock(&data->update_lock);
510 data->pwm[nr] = PWM_TO_REG(val);
511 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
512 mutex_unlock(&data->update_lock);
516 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
519 int nr = to_sensor_dev_attr(attr)->index;
520 struct lm85_data *data = lm85_update_device(dev);
521 int pwm_zone, enable;
523 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
525 case -1: /* PWM is always at 100% */
528 case 0: /* PWM is always at 0% */
529 case -2: /* PWM responds to manual control */
532 default: /* PWM in automatic mode */
535 return sprintf(buf, "%d\n", enable);
538 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
539 *attr, const char *buf, size_t count)
541 int nr = to_sensor_dev_attr(attr)->index;
542 struct i2c_client *client = to_i2c_client(dev);
543 struct lm85_data *data = i2c_get_clientdata(client);
544 long val = simple_strtol(buf, NULL, 10);
555 /* Here we have to choose arbitrarily one of the 5 possible
556 configurations; I go for the safest */
563 mutex_lock(&data->update_lock);
564 data->autofan[nr].config = lm85_read_value(client,
565 LM85_REG_AFAN_CONFIG(nr));
566 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
568 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
569 data->autofan[nr].config);
570 mutex_unlock(&data->update_lock);
574 #define show_pwm_reg(offset) \
575 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
576 show_pwm, set_pwm, offset - 1); \
577 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
578 show_pwm_enable, set_pwm_enable, offset - 1)
586 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
589 int nr = to_sensor_dev_attr(attr)->index;
590 struct lm85_data *data = lm85_update_device(dev);
591 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
595 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
598 int nr = to_sensor_dev_attr(attr)->index;
599 struct lm85_data *data = lm85_update_device(dev);
600 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
603 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
604 const char *buf, size_t count)
606 int nr = to_sensor_dev_attr(attr)->index;
607 struct i2c_client *client = to_i2c_client(dev);
608 struct lm85_data *data = i2c_get_clientdata(client);
609 long val = simple_strtol(buf, NULL, 10);
611 mutex_lock(&data->update_lock);
612 data->in_min[nr] = INS_TO_REG(nr, val);
613 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
614 mutex_unlock(&data->update_lock);
618 static ssize_t show_in_max(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", INS_FROM_REG(nr, data->in_max[nr]));
626 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
627 const char *buf, size_t count)
629 int nr = to_sensor_dev_attr(attr)->index;
630 struct i2c_client *client = to_i2c_client(dev);
631 struct lm85_data *data = i2c_get_clientdata(client);
632 long val = simple_strtol(buf, NULL, 10);
634 mutex_lock(&data->update_lock);
635 data->in_max[nr] = INS_TO_REG(nr, val);
636 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
637 mutex_unlock(&data->update_lock);
641 #define show_in_reg(offset) \
642 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
643 show_in, NULL, offset); \
644 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
645 show_in_min, set_in_min, offset); \
646 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
647 show_in_max, set_in_max, offset)
660 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
663 int nr = to_sensor_dev_attr(attr)->index;
664 struct lm85_data *data = lm85_update_device(dev);
665 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
666 data->temp_ext[nr]));
669 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
672 int nr = to_sensor_dev_attr(attr)->index;
673 struct lm85_data *data = lm85_update_device(dev);
674 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
677 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
678 const char *buf, size_t count)
680 int nr = to_sensor_dev_attr(attr)->index;
681 struct i2c_client *client = to_i2c_client(dev);
682 struct lm85_data *data = i2c_get_clientdata(client);
683 long val = simple_strtol(buf, NULL, 10);
685 mutex_lock(&data->update_lock);
686 data->temp_min[nr] = TEMP_TO_REG(val);
687 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
688 mutex_unlock(&data->update_lock);
692 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
695 int nr = to_sensor_dev_attr(attr)->index;
696 struct lm85_data *data = lm85_update_device(dev);
697 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
700 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
701 const char *buf, size_t count)
703 int nr = to_sensor_dev_attr(attr)->index;
704 struct i2c_client *client = to_i2c_client(dev);
705 struct lm85_data *data = i2c_get_clientdata(client);
706 long val = simple_strtol(buf, NULL, 10);
708 mutex_lock(&data->update_lock);
709 data->temp_max[nr] = TEMP_TO_REG(val);
710 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
711 mutex_unlock(&data->update_lock);
715 #define show_temp_reg(offset) \
716 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
717 show_temp, NULL, offset - 1); \
718 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
719 show_temp_min, set_temp_min, offset - 1); \
720 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
721 show_temp_max, set_temp_max, offset - 1);
728 /* Automatic PWM control */
730 static ssize_t show_pwm_auto_channels(struct device *dev,
731 struct device_attribute *attr, char *buf)
733 int nr = to_sensor_dev_attr(attr)->index;
734 struct lm85_data *data = lm85_update_device(dev);
735 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
738 static ssize_t set_pwm_auto_channels(struct device *dev,
739 struct device_attribute *attr, const char *buf, size_t count)
741 int nr = to_sensor_dev_attr(attr)->index;
742 struct i2c_client *client = to_i2c_client(dev);
743 struct lm85_data *data = i2c_get_clientdata(client);
744 long val = simple_strtol(buf, NULL, 10);
746 mutex_lock(&data->update_lock);
747 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
749 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
750 data->autofan[nr].config);
751 mutex_unlock(&data->update_lock);
755 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
756 struct device_attribute *attr, char *buf)
758 int nr = to_sensor_dev_attr(attr)->index;
759 struct lm85_data *data = lm85_update_device(dev);
760 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
763 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
764 struct device_attribute *attr, const char *buf, size_t count)
766 int nr = to_sensor_dev_attr(attr)->index;
767 struct i2c_client *client = to_i2c_client(dev);
768 struct lm85_data *data = i2c_get_clientdata(client);
769 long val = simple_strtol(buf, NULL, 10);
771 mutex_lock(&data->update_lock);
772 data->autofan[nr].min_pwm = PWM_TO_REG(val);
773 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
774 data->autofan[nr].min_pwm);
775 mutex_unlock(&data->update_lock);
779 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
780 struct device_attribute *attr, char *buf)
782 int nr = to_sensor_dev_attr(attr)->index;
783 struct lm85_data *data = lm85_update_device(dev);
784 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
787 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
788 struct device_attribute *attr, const char *buf, size_t count)
790 int nr = to_sensor_dev_attr(attr)->index;
791 struct i2c_client *client = to_i2c_client(dev);
792 struct lm85_data *data = i2c_get_clientdata(client);
793 long val = simple_strtol(buf, NULL, 10);
795 mutex_lock(&data->update_lock);
796 data->autofan[nr].min_off = val;
797 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
799 | (data->autofan[0].min_off ? 0x20 : 0)
800 | (data->autofan[1].min_off ? 0x40 : 0)
801 | (data->autofan[2].min_off ? 0x80 : 0));
802 mutex_unlock(&data->update_lock);
806 static ssize_t show_pwm_auto_pwm_freq(struct device *dev,
807 struct device_attribute *attr, char *buf)
809 int nr = to_sensor_dev_attr(attr)->index;
810 struct lm85_data *data = lm85_update_device(dev);
811 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
814 static ssize_t set_pwm_auto_pwm_freq(struct device *dev,
815 struct device_attribute *attr, const char *buf, size_t count)
817 int nr = to_sensor_dev_attr(attr)->index;
818 struct i2c_client *client = to_i2c_client(dev);
819 struct lm85_data *data = i2c_get_clientdata(client);
820 long val = simple_strtol(buf, NULL, 10);
822 mutex_lock(&data->update_lock);
823 data->autofan[nr].freq = FREQ_TO_REG(val);
824 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
825 (data->zone[nr].range << 4)
826 | data->autofan[nr].freq);
827 mutex_unlock(&data->update_lock);
831 #define pwm_auto(offset) \
832 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
833 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
834 set_pwm_auto_channels, offset - 1); \
835 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
836 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
837 set_pwm_auto_pwm_min, offset - 1); \
838 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
839 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
840 set_pwm_auto_pwm_minctl, offset - 1); \
841 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
842 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
843 set_pwm_auto_pwm_freq, offset - 1);
849 /* Temperature settings for automatic PWM control */
851 static ssize_t show_temp_auto_temp_off(struct device *dev,
852 struct device_attribute *attr, char *buf)
854 int nr = to_sensor_dev_attr(attr)->index;
855 struct lm85_data *data = lm85_update_device(dev);
856 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
857 HYST_FROM_REG(data->zone[nr].hyst));
860 static ssize_t set_temp_auto_temp_off(struct device *dev,
861 struct device_attribute *attr, const char *buf, size_t count)
863 int nr = to_sensor_dev_attr(attr)->index;
864 struct i2c_client *client = to_i2c_client(dev);
865 struct lm85_data *data = i2c_get_clientdata(client);
867 long val = simple_strtol(buf, NULL, 10);
869 mutex_lock(&data->update_lock);
870 min = TEMP_FROM_REG(data->zone[nr].limit);
871 data->zone[nr].off_desired = TEMP_TO_REG(val);
872 data->zone[nr].hyst = HYST_TO_REG(min - val);
873 if (nr == 0 || nr == 1) {
874 lm85_write_value(client, LM85_REG_AFAN_HYST1,
875 (data->zone[0].hyst << 4)
876 | data->zone[1].hyst);
878 lm85_write_value(client, LM85_REG_AFAN_HYST2,
879 (data->zone[2].hyst << 4));
881 mutex_unlock(&data->update_lock);
885 static ssize_t show_temp_auto_temp_min(struct device *dev,
886 struct device_attribute *attr, char *buf)
888 int nr = to_sensor_dev_attr(attr)->index;
889 struct lm85_data *data = lm85_update_device(dev);
890 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
893 static ssize_t set_temp_auto_temp_min(struct device *dev,
894 struct device_attribute *attr, const char *buf, size_t count)
896 int nr = to_sensor_dev_attr(attr)->index;
897 struct i2c_client *client = to_i2c_client(dev);
898 struct lm85_data *data = i2c_get_clientdata(client);
899 long val = simple_strtol(buf, NULL, 10);
901 mutex_lock(&data->update_lock);
902 data->zone[nr].limit = TEMP_TO_REG(val);
903 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
904 data->zone[nr].limit);
906 /* Update temp_auto_max and temp_auto_range */
907 data->zone[nr].range = RANGE_TO_REG(
908 TEMP_FROM_REG(data->zone[nr].max_desired) -
909 TEMP_FROM_REG(data->zone[nr].limit));
910 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
911 ((data->zone[nr].range & 0x0f) << 4)
912 | (data->autofan[nr].freq & 0x07));
914 /* Update temp_auto_hyst and temp_auto_off */
915 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
916 data->zone[nr].limit) - TEMP_FROM_REG(
917 data->zone[nr].off_desired));
918 if (nr == 0 || nr == 1) {
919 lm85_write_value(client, LM85_REG_AFAN_HYST1,
920 (data->zone[0].hyst << 4)
921 | data->zone[1].hyst);
923 lm85_write_value(client, LM85_REG_AFAN_HYST2,
924 (data->zone[2].hyst << 4));
926 mutex_unlock(&data->update_lock);
930 static ssize_t show_temp_auto_temp_max(struct device *dev,
931 struct device_attribute *attr, char *buf)
933 int nr = to_sensor_dev_attr(attr)->index;
934 struct lm85_data *data = lm85_update_device(dev);
935 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
936 RANGE_FROM_REG(data->zone[nr].range));
939 static ssize_t set_temp_auto_temp_max(struct device *dev,
940 struct device_attribute *attr, const char *buf, size_t count)
942 int nr = to_sensor_dev_attr(attr)->index;
943 struct i2c_client *client = to_i2c_client(dev);
944 struct lm85_data *data = i2c_get_clientdata(client);
946 long val = simple_strtol(buf, NULL, 10);
948 mutex_lock(&data->update_lock);
949 min = TEMP_FROM_REG(data->zone[nr].limit);
950 data->zone[nr].max_desired = TEMP_TO_REG(val);
951 data->zone[nr].range = RANGE_TO_REG(
953 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
954 ((data->zone[nr].range & 0x0f) << 4)
955 | (data->autofan[nr].freq & 0x07));
956 mutex_unlock(&data->update_lock);
960 static ssize_t show_temp_auto_temp_crit(struct device *dev,
961 struct device_attribute *attr, char *buf)
963 int nr = to_sensor_dev_attr(attr)->index;
964 struct lm85_data *data = lm85_update_device(dev);
965 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
968 static ssize_t set_temp_auto_temp_crit(struct device *dev,
969 struct device_attribute *attr, const char *buf, size_t count)
971 int nr = to_sensor_dev_attr(attr)->index;
972 struct i2c_client *client = to_i2c_client(dev);
973 struct lm85_data *data = i2c_get_clientdata(client);
974 long val = simple_strtol(buf, NULL, 10);
976 mutex_lock(&data->update_lock);
977 data->zone[nr].critical = TEMP_TO_REG(val);
978 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
979 data->zone[nr].critical);
980 mutex_unlock(&data->update_lock);
984 #define temp_auto(offset) \
985 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
986 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
987 set_temp_auto_temp_off, offset - 1); \
988 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
989 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
990 set_temp_auto_temp_min, offset - 1); \
991 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
992 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
993 set_temp_auto_temp_max, offset - 1); \
994 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
995 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
996 set_temp_auto_temp_crit, offset - 1);
1002 static int lm85_attach_adapter(struct i2c_adapter *adapter)
1004 if (!(adapter->class & I2C_CLASS_HWMON))
1006 return i2c_probe(adapter, &addr_data, lm85_detect);
1009 static struct attribute *lm85_attributes[] = {
1010 &sensor_dev_attr_fan1_input.dev_attr.attr,
1011 &sensor_dev_attr_fan2_input.dev_attr.attr,
1012 &sensor_dev_attr_fan3_input.dev_attr.attr,
1013 &sensor_dev_attr_fan4_input.dev_attr.attr,
1014 &sensor_dev_attr_fan1_min.dev_attr.attr,
1015 &sensor_dev_attr_fan2_min.dev_attr.attr,
1016 &sensor_dev_attr_fan3_min.dev_attr.attr,
1017 &sensor_dev_attr_fan4_min.dev_attr.attr,
1018 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1019 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1020 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1021 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1023 &sensor_dev_attr_pwm1.dev_attr.attr,
1024 &sensor_dev_attr_pwm2.dev_attr.attr,
1025 &sensor_dev_attr_pwm3.dev_attr.attr,
1026 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1027 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1028 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1030 &sensor_dev_attr_in0_input.dev_attr.attr,
1031 &sensor_dev_attr_in1_input.dev_attr.attr,
1032 &sensor_dev_attr_in2_input.dev_attr.attr,
1033 &sensor_dev_attr_in3_input.dev_attr.attr,
1034 &sensor_dev_attr_in0_min.dev_attr.attr,
1035 &sensor_dev_attr_in1_min.dev_attr.attr,
1036 &sensor_dev_attr_in2_min.dev_attr.attr,
1037 &sensor_dev_attr_in3_min.dev_attr.attr,
1038 &sensor_dev_attr_in0_max.dev_attr.attr,
1039 &sensor_dev_attr_in1_max.dev_attr.attr,
1040 &sensor_dev_attr_in2_max.dev_attr.attr,
1041 &sensor_dev_attr_in3_max.dev_attr.attr,
1042 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1043 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1044 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1045 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1047 &sensor_dev_attr_temp1_input.dev_attr.attr,
1048 &sensor_dev_attr_temp2_input.dev_attr.attr,
1049 &sensor_dev_attr_temp3_input.dev_attr.attr,
1050 &sensor_dev_attr_temp1_min.dev_attr.attr,
1051 &sensor_dev_attr_temp2_min.dev_attr.attr,
1052 &sensor_dev_attr_temp3_min.dev_attr.attr,
1053 &sensor_dev_attr_temp1_max.dev_attr.attr,
1054 &sensor_dev_attr_temp2_max.dev_attr.attr,
1055 &sensor_dev_attr_temp3_max.dev_attr.attr,
1056 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1057 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1058 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1059 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1060 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1062 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1063 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1064 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1065 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1066 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1067 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1068 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1069 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1070 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1071 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr,
1072 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr,
1073 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr,
1075 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1076 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1077 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1078 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1079 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1080 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1081 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1082 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1083 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1084 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1085 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1086 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1089 &dev_attr_cpu0_vid.attr,
1090 &dev_attr_alarms.attr,
1094 static const struct attribute_group lm85_group = {
1095 .attrs = lm85_attributes,
1098 static struct attribute *lm85_attributes_in4[] = {
1099 &sensor_dev_attr_in4_input.dev_attr.attr,
1100 &sensor_dev_attr_in4_min.dev_attr.attr,
1101 &sensor_dev_attr_in4_max.dev_attr.attr,
1102 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1106 static const struct attribute_group lm85_group_in4 = {
1107 .attrs = lm85_attributes_in4,
1110 static struct attribute *lm85_attributes_in567[] = {
1111 &sensor_dev_attr_in5_input.dev_attr.attr,
1112 &sensor_dev_attr_in6_input.dev_attr.attr,
1113 &sensor_dev_attr_in7_input.dev_attr.attr,
1114 &sensor_dev_attr_in5_min.dev_attr.attr,
1115 &sensor_dev_attr_in6_min.dev_attr.attr,
1116 &sensor_dev_attr_in7_min.dev_attr.attr,
1117 &sensor_dev_attr_in5_max.dev_attr.attr,
1118 &sensor_dev_attr_in6_max.dev_attr.attr,
1119 &sensor_dev_attr_in7_max.dev_attr.attr,
1120 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1121 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1122 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1126 static const struct attribute_group lm85_group_in567 = {
1127 .attrs = lm85_attributes_in567,
1130 static int lm85_detect(struct i2c_adapter *adapter, int address,
1133 int company, verstep;
1134 struct i2c_client *new_client = NULL;
1135 struct lm85_data *data;
1137 const char *type_name = "";
1139 if (!i2c_check_functionality(adapter,
1140 I2C_FUNC_SMBUS_BYTE_DATA)) {
1141 /* We need to be able to do byte I/O */
1145 /* OK. For now, we presume we have a valid client. We now create the
1146 client structure, even though we cannot fill it completely yet.
1147 But it allows us to access lm85_{read,write}_value. */
1149 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1154 new_client = &data->client;
1155 i2c_set_clientdata(new_client, data);
1156 new_client->addr = address;
1157 new_client->adapter = adapter;
1158 new_client->driver = &lm85_driver;
1159 new_client->flags = 0;
1161 /* Now, we do the remaining detection. */
1163 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1164 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1166 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1167 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1168 i2c_adapter_id(new_client->adapter), new_client->addr,
1171 /* If auto-detecting, Determine the chip type. */
1173 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1174 i2c_adapter_id(adapter), address);
1175 if (company == LM85_COMPANY_NATIONAL
1176 && verstep == LM85_VERSTEP_LM85C) {
1178 } else if (company == LM85_COMPANY_NATIONAL
1179 && verstep == LM85_VERSTEP_LM85B) {
1181 } else if (company == LM85_COMPANY_NATIONAL
1182 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1183 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1184 " Defaulting to LM85.\n", verstep);
1186 } else if (company == LM85_COMPANY_ANALOG_DEV
1187 && verstep == LM85_VERSTEP_ADM1027) {
1189 } else if (company == LM85_COMPANY_ANALOG_DEV
1190 && (verstep == LM85_VERSTEP_ADT7463
1191 || verstep == LM85_VERSTEP_ADT7463C)) {
1193 } else if (company == LM85_COMPANY_ANALOG_DEV
1194 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1195 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1196 " Defaulting to Generic LM85.\n", verstep);
1198 } else if (company == LM85_COMPANY_SMSC
1199 && (verstep == LM85_VERSTEP_EMC6D100_A0
1200 || verstep == LM85_VERSTEP_EMC6D100_A1)) {
1201 /* Unfortunately, we can't tell a '100 from a '101
1202 * from the registers. Since a '101 is a '100
1203 * in a package with fewer pins and therefore no
1204 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1205 * inputs read 0, then it's a '101.
1208 } else if (company == LM85_COMPANY_SMSC
1209 && verstep == LM85_VERSTEP_EMC6D102) {
1211 } else if (company == LM85_COMPANY_SMSC
1212 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1213 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1214 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1215 " Defaulting to Generic LM85.\n", verstep);
1217 } else if (kind == any_chip
1218 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1219 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1220 /* Leave kind as "any_chip" */
1222 dev_dbg(&adapter->dev, "Autodetection failed\n");
1223 /* Not an LM85... */
1224 if (kind == any_chip) { /* User used force=x,y */
1225 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1226 " found at %d,0x%02x. Try force_lm85c.\n",
1227 i2c_adapter_id(adapter), address);
1234 /* Fill in the chip specific driver values */
1235 if (kind == any_chip)
1237 else if (kind == lm85b)
1238 type_name = "lm85b";
1239 else if (kind == lm85c)
1240 type_name = "lm85c";
1241 else if (kind == adm1027)
1242 type_name = "adm1027";
1243 else if (kind == adt7463)
1244 type_name = "adt7463";
1245 else if (kind == emc6d100)
1246 type_name = "emc6d100";
1247 else if (kind == emc6d102)
1248 type_name = "emc6d102";
1249 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1251 /* Fill in the remaining client fields */
1254 mutex_init(&data->update_lock);
1256 /* Tell the I2C layer a new client has arrived */
1257 if ((err = i2c_attach_client(new_client)))
1260 /* Set the VRM version */
1261 data->vrm = vid_which_vrm();
1263 /* Initialize the LM85 chip */
1264 lm85_init_client(new_client);
1266 /* Register sysfs hooks */
1267 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group)))
1270 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1271 as a sixth digital VID input rather than an analog input. */
1272 data->vid = lm85_read_value(new_client, LM85_REG_VID);
1273 if (!(kind == adt7463 && (data->vid & 0x80)))
1274 if ((err = sysfs_create_group(&new_client->dev.kobj,
1278 /* The EMC6D100 has 3 additional voltage inputs */
1279 if (kind == emc6d100)
1280 if ((err = sysfs_create_group(&new_client->dev.kobj,
1281 &lm85_group_in567)))
1284 data->hwmon_dev = hwmon_device_register(&new_client->dev);
1285 if (IS_ERR(data->hwmon_dev)) {
1286 err = PTR_ERR(data->hwmon_dev);
1292 /* Error out and cleanup code */
1294 sysfs_remove_group(&new_client->dev.kobj, &lm85_group);
1295 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in4);
1296 if (kind == emc6d100)
1297 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in567);
1299 i2c_detach_client(new_client);
1306 static int lm85_detach_client(struct i2c_client *client)
1308 struct lm85_data *data = i2c_get_clientdata(client);
1309 hwmon_device_unregister(data->hwmon_dev);
1310 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1311 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1312 if (data->type == emc6d100)
1313 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1314 i2c_detach_client(client);
1320 static int lm85_read_value(struct i2c_client *client, u8 reg)
1324 /* What size location is it? */
1326 case LM85_REG_FAN(0): /* Read WORD data */
1327 case LM85_REG_FAN(1):
1328 case LM85_REG_FAN(2):
1329 case LM85_REG_FAN(3):
1330 case LM85_REG_FAN_MIN(0):
1331 case LM85_REG_FAN_MIN(1):
1332 case LM85_REG_FAN_MIN(2):
1333 case LM85_REG_FAN_MIN(3):
1334 case LM85_REG_ALARM1: /* Read both bytes at once */
1335 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1336 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1338 case ADT7463_REG_TMIN_CTL1: /* Read WORD MSB, LSB */
1339 res = i2c_smbus_read_byte_data(client, reg) << 8;
1340 res |= i2c_smbus_read_byte_data(client, reg + 1) & 0xff;
1342 default: /* Read BYTE data */
1343 res = i2c_smbus_read_byte_data(client, reg);
1350 static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1355 case LM85_REG_FAN(0): /* Write WORD data */
1356 case LM85_REG_FAN(1):
1357 case LM85_REG_FAN(2):
1358 case LM85_REG_FAN(3):
1359 case LM85_REG_FAN_MIN(0):
1360 case LM85_REG_FAN_MIN(1):
1361 case LM85_REG_FAN_MIN(2):
1362 case LM85_REG_FAN_MIN(3):
1363 /* NOTE: ALARM is read only, so not included here */
1364 res = i2c_smbus_write_byte_data(client, reg, value & 0xff);
1365 res |= i2c_smbus_write_byte_data(client, reg + 1,
1366 (value >> 8) & 0xff);
1368 case ADT7463_REG_TMIN_CTL1: /* Write WORD MSB, LSB */
1369 res = i2c_smbus_write_byte_data(client, reg,
1370 (value >> 8) & 0xff);
1371 res |= i2c_smbus_write_byte_data(client, reg + 1, value & 0xff);
1373 default: /* Write BYTE data */
1374 res = i2c_smbus_write_byte_data(client, reg, value);
1381 static void lm85_init_client(struct i2c_client *client)
1384 struct lm85_data *data = i2c_get_clientdata(client);
1386 dev_dbg(&client->dev, "Initializing device\n");
1388 /* Warn if part was not "READY" */
1389 value = lm85_read_value(client, LM85_REG_CONFIG);
1390 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1392 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1393 i2c_adapter_id(client->adapter), client->addr);
1395 if (!(value & 0x04)) {
1396 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1397 i2c_adapter_id(client->adapter), client->addr);
1400 && (data->type == adm1027
1401 || data->type == adt7463)) {
1402 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1403 "Please report this to the lm85 maintainer.\n",
1404 i2c_adapter_id(client->adapter), client->addr);
1407 /* WE INTENTIONALLY make no changes to the limits,
1408 * offsets, pwms, fans and zones. If they were
1409 * configured, we don't want to mess with them.
1410 * If they weren't, the default is 100% PWM, no
1411 * control and will suffice until 'sensors -s'
1412 * can be run by the user.
1415 /* Start monitoring */
1416 value = lm85_read_value(client, LM85_REG_CONFIG);
1417 /* Try to clear LOCK, Set START, save everything else */
1418 value = (value & ~0x02) | 0x01;
1419 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1420 lm85_write_value(client, LM85_REG_CONFIG, value);
1423 static struct lm85_data *lm85_update_device(struct device *dev)
1425 struct i2c_client *client = to_i2c_client(dev);
1426 struct lm85_data *data = i2c_get_clientdata(client);
1429 mutex_lock(&data->update_lock);
1432 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1433 /* Things that change quickly */
1434 dev_dbg(&client->dev, "Reading sensor values\n");
1436 /* Have to read extended bits first to "freeze" the
1437 * more significant bits that are read later.
1438 * There are 2 additional resolution bits per channel and we
1439 * have room for 4, so we shift them to the left.
1441 if (data->type == adm1027 || data->type == adt7463) {
1442 int ext1 = lm85_read_value(client,
1443 ADM1027_REG_EXTEND_ADC1);
1444 int ext2 = lm85_read_value(client,
1445 ADM1027_REG_EXTEND_ADC2);
1446 int val = (ext1 << 8) + ext2;
1448 for (i = 0; i <= 4; i++)
1450 ((val >> (i * 2)) & 0x03) << 2;
1452 for (i = 0; i <= 2; i++)
1454 (val >> ((i + 4) * 2)) & 0x0c;
1457 data->vid = lm85_read_value(client, LM85_REG_VID);
1459 for (i = 0; i <= 3; ++i) {
1461 lm85_read_value(client, LM85_REG_IN(i));
1464 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1465 data->in[4] = lm85_read_value(client,
1469 for (i = 0; i <= 3; ++i) {
1471 lm85_read_value(client, LM85_REG_FAN(i));
1474 for (i = 0; i <= 2; ++i) {
1476 lm85_read_value(client, LM85_REG_TEMP(i));
1479 for (i = 0; i <= 2; ++i) {
1481 lm85_read_value(client, LM85_REG_PWM(i));
1484 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1486 if (data->type == adt7463) {
1487 if (data->therm_total < ULONG_MAX - 256) {
1488 data->therm_total +=
1489 lm85_read_value(client, ADT7463_REG_THERM);
1491 } else if (data->type == emc6d100) {
1492 /* Three more voltage sensors */
1493 for (i = 5; i <= 7; ++i) {
1494 data->in[i] = lm85_read_value(client,
1495 EMC6D100_REG_IN(i));
1497 /* More alarm bits */
1498 data->alarms |= lm85_read_value(client,
1499 EMC6D100_REG_ALARM3) << 16;
1500 } else if (data->type == emc6d102) {
1501 /* Have to read LSB bits after the MSB ones because
1502 the reading of the MSB bits has frozen the
1503 LSBs (backward from the ADM1027).
1505 int ext1 = lm85_read_value(client,
1506 EMC6D102_REG_EXTEND_ADC1);
1507 int ext2 = lm85_read_value(client,
1508 EMC6D102_REG_EXTEND_ADC2);
1509 int ext3 = lm85_read_value(client,
1510 EMC6D102_REG_EXTEND_ADC3);
1511 int ext4 = lm85_read_value(client,
1512 EMC6D102_REG_EXTEND_ADC4);
1513 data->in_ext[0] = ext3 & 0x0f;
1514 data->in_ext[1] = ext4 & 0x0f;
1515 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1516 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1517 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1519 data->temp_ext[0] = ext1 & 0x0f;
1520 data->temp_ext[1] = ext2 & 0x0f;
1521 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1524 data->last_reading = jiffies;
1525 } /* last_reading */
1528 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1529 /* Things that don't change often */
1530 dev_dbg(&client->dev, "Reading config values\n");
1532 for (i = 0; i <= 3; ++i) {
1534 lm85_read_value(client, LM85_REG_IN_MIN(i));
1536 lm85_read_value(client, LM85_REG_IN_MAX(i));
1539 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1540 data->in_min[4] = lm85_read_value(client,
1541 LM85_REG_IN_MIN(4));
1542 data->in_max[4] = lm85_read_value(client,
1543 LM85_REG_IN_MAX(4));
1546 if (data->type == emc6d100) {
1547 for (i = 5; i <= 7; ++i) {
1548 data->in_min[i] = lm85_read_value(client,
1549 EMC6D100_REG_IN_MIN(i));
1550 data->in_max[i] = lm85_read_value(client,
1551 EMC6D100_REG_IN_MAX(i));
1555 for (i = 0; i <= 3; ++i) {
1557 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1560 for (i = 0; i <= 2; ++i) {
1562 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1564 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1567 for (i = 0; i <= 2; ++i) {
1569 data->autofan[i].config =
1570 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1571 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1572 data->autofan[i].freq = val & 0x07;
1573 data->zone[i].range = (val >> 4) & 0x0f;
1574 data->autofan[i].min_pwm =
1575 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1576 data->zone[i].limit =
1577 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1578 data->zone[i].critical =
1579 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1582 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1583 data->smooth[0] = i & 0x0f;
1584 data->syncpwm3 = i & 0x10; /* Save PWM3 config */
1585 data->autofan[0].min_off = (i & 0x20) != 0;
1586 data->autofan[1].min_off = (i & 0x40) != 0;
1587 data->autofan[2].min_off = (i & 0x80) != 0;
1588 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1589 data->smooth[1] = (i >> 4) & 0x0f;
1590 data->smooth[2] = i & 0x0f;
1592 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1593 data->zone[0].hyst = (i >> 4) & 0x0f;
1594 data->zone[1].hyst = i & 0x0f;
1596 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1597 data->zone[2].hyst = (i >> 4) & 0x0f;
1599 if (data->type == lm85b || data->type == lm85c) {
1600 data->tach_mode = lm85_read_value(client,
1601 LM85_REG_TACH_MODE);
1602 data->spinup_ctl = lm85_read_value(client,
1603 LM85_REG_SPINUP_CTL);
1604 } else if (data->type == adt7463 || data->type == adm1027) {
1605 if (data->type == adt7463) {
1606 for (i = 0; i <= 2; ++i) {
1607 data->oppoint[i] = lm85_read_value(client,
1608 ADT7463_REG_OPPOINT(i));
1610 data->tmin_ctl = lm85_read_value(client,
1611 ADT7463_REG_TMIN_CTL1);
1612 data->therm_limit = lm85_read_value(client,
1613 ADT7463_REG_THERM_LIMIT);
1615 for (i = 0; i <= 2; ++i) {
1616 data->temp_offset[i] = lm85_read_value(client,
1617 ADM1027_REG_TEMP_OFFSET(i));
1619 data->tach_mode = lm85_read_value(client,
1620 ADM1027_REG_CONFIG3);
1621 data->fan_ppr = lm85_read_value(client,
1622 ADM1027_REG_FAN_PPR);
1625 data->last_config = jiffies;
1630 mutex_unlock(&data->update_lock);
1636 static int __init sm_lm85_init(void)
1638 return i2c_add_driver(&lm85_driver);
1641 static void __exit sm_lm85_exit(void)
1643 i2c_del_driver(&lm85_driver);
1646 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1647 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1648 * post 2.7.0 CVS changes.
1650 MODULE_LICENSE("GPL");
1651 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1652 "Margit Schubert-While <margitsw@t-online.de>, "
1653 "Justin Thiessen <jthiessen@penguincomputing.com");
1654 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1656 module_init(sm_lm85_init);
1657 module_exit(sm_lm85_exit);