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 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?0:5400000/(val))
156 /* Temperature is reported in .001 degC increments */
157 #define TEMP_TO_REG(val) \
158 SENSORS_LIMIT(SCALE(val,1000,1),-127,127)
159 #define TEMPEXT_FROM_REG(val,ext) \
160 SCALE(((val) << 4) + (ext), 16, 1000)
161 #define TEMP_FROM_REG(val) ((val) * 1000)
163 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
164 #define PWM_FROM_REG(val) (val)
167 /* ZONEs have the following parameters:
168 * Limit (low) temp, 1. degC
169 * Hysteresis (below limit), 1. degC (0-15)
170 * Range of speed control, .1 degC (2-80)
171 * Critical (high) temp, 1. degC
173 * FAN PWMs have the following parameters:
174 * Reference Zone, 1, 2, 3, etc.
175 * Spinup time, .05 sec
176 * PWM value at limit/low temp, 1 count
177 * PWM Frequency, 1. Hz
178 * PWM is Min or OFF below limit, flag
179 * Invert PWM output, flag
181 * Some chips filter the temp, others the fan.
182 * Filter constant (or disabled) .1 seconds
185 /* These are the zone temperature range encodings in .001 degree C */
186 static int lm85_range_map[] = {
187 2000, 2500, 3300, 4000, 5000, 6600,
188 8000, 10000, 13300, 16000, 20000, 26600,
189 32000, 40000, 53300, 80000
191 static int RANGE_TO_REG( int range )
195 if ( range < lm85_range_map[0] ) {
197 } else if ( range > lm85_range_map[15] ) {
199 } else { /* find closest match */
200 for ( i = 14 ; i >= 0 ; --i ) {
201 if ( range > lm85_range_map[i] ) { /* range bracketed */
202 if ((lm85_range_map[i+1] - range) <
203 (range - lm85_range_map[i])) {
213 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
215 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
216 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
217 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
218 * is ignored, or set to 0.
220 /* These are the PWM frequency encodings */
221 static int lm85_freq_map[] = { /* .1 Hz */
222 100, 150, 230, 300, 380, 470, 620, 940
224 static int FREQ_TO_REG( int freq )
228 if( freq >= lm85_freq_map[7] ) { return 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 .id = I2C_DRIVERID_LM85,
371 .attach_adapter = lm85_attach_adapter,
372 .detach_client = lm85_detach_client,
377 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
380 int nr = to_sensor_dev_attr(attr)->index;
381 struct lm85_data *data = lm85_update_device(dev);
382 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
385 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
388 int nr = to_sensor_dev_attr(attr)->index;
389 struct lm85_data *data = lm85_update_device(dev);
390 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
393 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
394 const char *buf, size_t count)
396 int nr = to_sensor_dev_attr(attr)->index;
397 struct i2c_client *client = to_i2c_client(dev);
398 struct lm85_data *data = i2c_get_clientdata(client);
399 unsigned long val = simple_strtoul(buf, NULL, 10);
401 mutex_lock(&data->update_lock);
402 data->fan_min[nr] = FAN_TO_REG(val);
403 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
404 mutex_unlock(&data->update_lock);
408 #define show_fan_offset(offset) \
409 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
410 show_fan, NULL, offset - 1); \
411 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
412 show_fan_min, set_fan_min, offset - 1)
419 /* vid, vrm, alarms */
421 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
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, char *buf)
441 struct lm85_data *data = dev_get_drvdata(dev);
442 return sprintf(buf, "%ld\n", (long) data->vrm);
445 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
447 struct i2c_client *client = to_i2c_client(dev);
448 struct lm85_data *data = i2c_get_clientdata(client);
451 val = simple_strtoul(buf, NULL, 10);
456 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
458 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
460 struct lm85_data *data = lm85_update_device(dev);
461 return sprintf(buf, "%u\n", data->alarms);
464 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
466 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
469 int nr = to_sensor_dev_attr(attr)->index;
470 struct lm85_data *data = lm85_update_device(dev);
471 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
474 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
475 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
476 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
477 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
478 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
479 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
480 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
481 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
482 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
483 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
484 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
485 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
486 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
487 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
488 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
489 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
490 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
494 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
497 int nr = to_sensor_dev_attr(attr)->index;
498 struct lm85_data *data = lm85_update_device(dev);
499 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
502 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
503 const char *buf, size_t count)
505 int nr = to_sensor_dev_attr(attr)->index;
506 struct i2c_client *client = to_i2c_client(dev);
507 struct lm85_data *data = i2c_get_clientdata(client);
508 long val = simple_strtol(buf, NULL, 10);
510 mutex_lock(&data->update_lock);
511 data->pwm[nr] = PWM_TO_REG(val);
512 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
513 mutex_unlock(&data->update_lock);
517 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
520 int nr = to_sensor_dev_attr(attr)->index;
521 struct lm85_data *data = lm85_update_device(dev);
522 int pwm_zone, enable;
524 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
526 case -1: /* PWM is always at 100% */
529 case 0: /* PWM is always at 0% */
530 case -2: /* PWM responds to manual control */
533 default: /* PWM in automatic mode */
536 return sprintf(buf, "%d\n", enable);
539 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
540 *attr, const char *buf, size_t count)
542 int nr = to_sensor_dev_attr(attr)->index;
543 struct i2c_client *client = to_i2c_client(dev);
544 struct lm85_data *data = i2c_get_clientdata(client);
545 long val = simple_strtol(buf, NULL, 10);
556 /* Here we have to choose arbitrarily one of the 5 possible
557 configurations; I go for the safest */
564 mutex_lock(&data->update_lock);
565 data->autofan[nr].config = lm85_read_value(client,
566 LM85_REG_AFAN_CONFIG(nr));
567 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
569 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
570 data->autofan[nr].config);
571 mutex_unlock(&data->update_lock);
575 #define show_pwm_reg(offset) \
576 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
577 show_pwm, set_pwm, offset - 1); \
578 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
579 show_pwm_enable, set_pwm_enable, offset - 1)
587 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
590 int nr = to_sensor_dev_attr(attr)->index;
591 struct lm85_data *data = lm85_update_device(dev);
592 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
597 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
600 int nr = to_sensor_dev_attr(attr)->index;
601 struct lm85_data *data = lm85_update_device(dev);
602 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
605 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
606 const char *buf, size_t count)
608 int nr = to_sensor_dev_attr(attr)->index;
609 struct i2c_client *client = to_i2c_client(dev);
610 struct lm85_data *data = i2c_get_clientdata(client);
611 long val = simple_strtol(buf, NULL, 10);
613 mutex_lock(&data->update_lock);
614 data->in_min[nr] = INS_TO_REG(nr, val);
615 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
616 mutex_unlock(&data->update_lock);
620 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
623 int nr = to_sensor_dev_attr(attr)->index;
624 struct lm85_data *data = lm85_update_device(dev);
625 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
628 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
629 const char *buf, size_t count)
631 int nr = to_sensor_dev_attr(attr)->index;
632 struct i2c_client *client = to_i2c_client(dev);
633 struct lm85_data *data = i2c_get_clientdata(client);
634 long val = simple_strtol(buf, NULL, 10);
636 mutex_lock(&data->update_lock);
637 data->in_max[nr] = INS_TO_REG(nr, val);
638 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
639 mutex_unlock(&data->update_lock);
643 #define show_in_reg(offset) \
644 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
645 show_in, NULL, offset); \
646 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
647 show_in_min, set_in_min, offset); \
648 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
649 show_in_max, set_in_max, offset)
662 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
665 int nr = to_sensor_dev_attr(attr)->index;
666 struct lm85_data *data = lm85_update_device(dev);
667 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
668 data->temp_ext[nr]));
671 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
674 int nr = to_sensor_dev_attr(attr)->index;
675 struct lm85_data *data = lm85_update_device(dev);
676 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
679 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
680 const char *buf, size_t count)
682 int nr = to_sensor_dev_attr(attr)->index;
683 struct i2c_client *client = to_i2c_client(dev);
684 struct lm85_data *data = i2c_get_clientdata(client);
685 long val = simple_strtol(buf, NULL, 10);
687 mutex_lock(&data->update_lock);
688 data->temp_min[nr] = TEMP_TO_REG(val);
689 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
690 mutex_unlock(&data->update_lock);
694 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
697 int nr = to_sensor_dev_attr(attr)->index;
698 struct lm85_data *data = lm85_update_device(dev);
699 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
702 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
703 const char *buf, size_t count)
705 int nr = to_sensor_dev_attr(attr)->index;
706 struct i2c_client *client = to_i2c_client(dev);
707 struct lm85_data *data = i2c_get_clientdata(client);
708 long val = simple_strtol(buf, NULL, 10);
710 mutex_lock(&data->update_lock);
711 data->temp_max[nr] = TEMP_TO_REG(val);
712 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
713 mutex_unlock(&data->update_lock);
717 #define show_temp_reg(offset) \
718 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
719 show_temp, NULL, offset - 1); \
720 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
721 show_temp_min, set_temp_min, offset - 1); \
722 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
723 show_temp_max, set_temp_max, offset - 1);
730 /* Automatic PWM control */
732 static ssize_t show_pwm_auto_channels(struct device *dev,
733 struct device_attribute *attr, char *buf)
735 int nr = to_sensor_dev_attr(attr)->index;
736 struct lm85_data *data = lm85_update_device(dev);
737 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
740 static ssize_t set_pwm_auto_channels(struct device *dev,
741 struct device_attribute *attr, const char *buf, size_t count)
743 int nr = to_sensor_dev_attr(attr)->index;
744 struct i2c_client *client = to_i2c_client(dev);
745 struct lm85_data *data = i2c_get_clientdata(client);
746 long val = simple_strtol(buf, NULL, 10);
748 mutex_lock(&data->update_lock);
749 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
751 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
752 data->autofan[nr].config);
753 mutex_unlock(&data->update_lock);
757 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
758 struct device_attribute *attr, char *buf)
760 int nr = to_sensor_dev_attr(attr)->index;
761 struct lm85_data *data = lm85_update_device(dev);
762 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
765 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
766 struct device_attribute *attr, const char *buf, size_t count)
768 int nr = to_sensor_dev_attr(attr)->index;
769 struct i2c_client *client = to_i2c_client(dev);
770 struct lm85_data *data = i2c_get_clientdata(client);
771 long val = simple_strtol(buf, NULL, 10);
773 mutex_lock(&data->update_lock);
774 data->autofan[nr].min_pwm = PWM_TO_REG(val);
775 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
776 data->autofan[nr].min_pwm);
777 mutex_unlock(&data->update_lock);
781 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
782 struct device_attribute *attr, char *buf)
784 int nr = to_sensor_dev_attr(attr)->index;
785 struct lm85_data *data = lm85_update_device(dev);
786 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
789 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
790 struct device_attribute *attr, const char *buf, size_t count)
792 int nr = to_sensor_dev_attr(attr)->index;
793 struct i2c_client *client = to_i2c_client(dev);
794 struct lm85_data *data = i2c_get_clientdata(client);
795 long val = simple_strtol(buf, NULL, 10);
797 mutex_lock(&data->update_lock);
798 data->autofan[nr].min_off = val;
799 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
801 | (data->autofan[0].min_off ? 0x20 : 0)
802 | (data->autofan[1].min_off ? 0x40 : 0)
803 | (data->autofan[2].min_off ? 0x80 : 0)
805 mutex_unlock(&data->update_lock);
809 static ssize_t show_pwm_auto_pwm_freq(struct device *dev,
810 struct device_attribute *attr, char *buf)
812 int nr = to_sensor_dev_attr(attr)->index;
813 struct lm85_data *data = lm85_update_device(dev);
814 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
817 static ssize_t set_pwm_auto_pwm_freq(struct device *dev,
818 struct device_attribute *attr, const char *buf, size_t count)
820 int nr = to_sensor_dev_attr(attr)->index;
821 struct i2c_client *client = to_i2c_client(dev);
822 struct lm85_data *data = i2c_get_clientdata(client);
823 long val = simple_strtol(buf, NULL, 10);
825 mutex_lock(&data->update_lock);
826 data->autofan[nr].freq = FREQ_TO_REG(val);
827 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
828 (data->zone[nr].range << 4)
829 | data->autofan[nr].freq
831 mutex_unlock(&data->update_lock);
835 #define pwm_auto(offset) \
836 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
837 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
838 set_pwm_auto_channels, offset - 1); \
839 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
840 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
841 set_pwm_auto_pwm_min, offset - 1); \
842 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
843 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
844 set_pwm_auto_pwm_minctl, offset - 1); \
845 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
846 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
847 set_pwm_auto_pwm_freq, offset - 1);
853 /* Temperature settings for automatic PWM control */
855 static ssize_t show_temp_auto_temp_off(struct device *dev,
856 struct device_attribute *attr, char *buf)
858 int nr = to_sensor_dev_attr(attr)->index;
859 struct lm85_data *data = lm85_update_device(dev);
860 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
861 HYST_FROM_REG(data->zone[nr].hyst));
864 static ssize_t set_temp_auto_temp_off(struct device *dev,
865 struct device_attribute *attr, const char *buf, size_t count)
867 int nr = to_sensor_dev_attr(attr)->index;
868 struct i2c_client *client = to_i2c_client(dev);
869 struct lm85_data *data = i2c_get_clientdata(client);
871 long val = simple_strtol(buf, NULL, 10);
873 mutex_lock(&data->update_lock);
874 min = TEMP_FROM_REG(data->zone[nr].limit);
875 data->zone[nr].off_desired = TEMP_TO_REG(val);
876 data->zone[nr].hyst = HYST_TO_REG(min - val);
877 if ( nr == 0 || nr == 1 ) {
878 lm85_write_value(client, LM85_REG_AFAN_HYST1,
879 (data->zone[0].hyst << 4)
883 lm85_write_value(client, LM85_REG_AFAN_HYST2,
884 (data->zone[2].hyst << 4)
887 mutex_unlock(&data->update_lock);
891 static ssize_t show_temp_auto_temp_min(struct device *dev,
892 struct device_attribute *attr, char *buf)
894 int nr = to_sensor_dev_attr(attr)->index;
895 struct lm85_data *data = lm85_update_device(dev);
896 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
899 static ssize_t set_temp_auto_temp_min(struct device *dev,
900 struct device_attribute *attr, const char *buf, size_t count)
902 int nr = to_sensor_dev_attr(attr)->index;
903 struct i2c_client *client = to_i2c_client(dev);
904 struct lm85_data *data = i2c_get_clientdata(client);
905 long val = simple_strtol(buf, NULL, 10);
907 mutex_lock(&data->update_lock);
908 data->zone[nr].limit = TEMP_TO_REG(val);
909 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
910 data->zone[nr].limit);
912 /* Update temp_auto_max and temp_auto_range */
913 data->zone[nr].range = RANGE_TO_REG(
914 TEMP_FROM_REG(data->zone[nr].max_desired) -
915 TEMP_FROM_REG(data->zone[nr].limit));
916 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
917 ((data->zone[nr].range & 0x0f) << 4)
918 | (data->autofan[nr].freq & 0x07));
920 /* Update temp_auto_hyst and temp_auto_off */
921 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
922 data->zone[nr].limit) - TEMP_FROM_REG(
923 data->zone[nr].off_desired));
924 if ( nr == 0 || nr == 1 ) {
925 lm85_write_value(client, LM85_REG_AFAN_HYST1,
926 (data->zone[0].hyst << 4)
930 lm85_write_value(client, LM85_REG_AFAN_HYST2,
931 (data->zone[2].hyst << 4)
934 mutex_unlock(&data->update_lock);
938 static ssize_t show_temp_auto_temp_max(struct device *dev,
939 struct device_attribute *attr, char *buf)
941 int nr = to_sensor_dev_attr(attr)->index;
942 struct lm85_data *data = lm85_update_device(dev);
943 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
944 RANGE_FROM_REG(data->zone[nr].range));
947 static ssize_t set_temp_auto_temp_max(struct device *dev,
948 struct device_attribute *attr, const char *buf, size_t count)
950 int nr = to_sensor_dev_attr(attr)->index;
951 struct i2c_client *client = to_i2c_client(dev);
952 struct lm85_data *data = i2c_get_clientdata(client);
954 long val = simple_strtol(buf, NULL, 10);
956 mutex_lock(&data->update_lock);
957 min = TEMP_FROM_REG(data->zone[nr].limit);
958 data->zone[nr].max_desired = TEMP_TO_REG(val);
959 data->zone[nr].range = RANGE_TO_REG(
961 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
962 ((data->zone[nr].range & 0x0f) << 4)
963 | (data->autofan[nr].freq & 0x07));
964 mutex_unlock(&data->update_lock);
968 static ssize_t show_temp_auto_temp_crit(struct device *dev,
969 struct device_attribute *attr, char *buf)
971 int nr = to_sensor_dev_attr(attr)->index;
972 struct lm85_data *data = lm85_update_device(dev);
973 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
976 static ssize_t set_temp_auto_temp_crit(struct device *dev,
977 struct device_attribute *attr,const char *buf, size_t count)
979 int nr = to_sensor_dev_attr(attr)->index;
980 struct i2c_client *client = to_i2c_client(dev);
981 struct lm85_data *data = i2c_get_clientdata(client);
982 long val = simple_strtol(buf, NULL, 10);
984 mutex_lock(&data->update_lock);
985 data->zone[nr].critical = TEMP_TO_REG(val);
986 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
987 data->zone[nr].critical);
988 mutex_unlock(&data->update_lock);
992 #define temp_auto(offset) \
993 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
994 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
995 set_temp_auto_temp_off, offset - 1); \
996 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
997 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
998 set_temp_auto_temp_min, offset - 1); \
999 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
1000 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
1001 set_temp_auto_temp_max, offset - 1); \
1002 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
1003 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
1004 set_temp_auto_temp_crit, offset - 1);
1010 static int lm85_attach_adapter(struct i2c_adapter *adapter)
1012 if (!(adapter->class & I2C_CLASS_HWMON))
1014 return i2c_probe(adapter, &addr_data, lm85_detect);
1017 static struct attribute *lm85_attributes[] = {
1018 &sensor_dev_attr_fan1_input.dev_attr.attr,
1019 &sensor_dev_attr_fan2_input.dev_attr.attr,
1020 &sensor_dev_attr_fan3_input.dev_attr.attr,
1021 &sensor_dev_attr_fan4_input.dev_attr.attr,
1022 &sensor_dev_attr_fan1_min.dev_attr.attr,
1023 &sensor_dev_attr_fan2_min.dev_attr.attr,
1024 &sensor_dev_attr_fan3_min.dev_attr.attr,
1025 &sensor_dev_attr_fan4_min.dev_attr.attr,
1026 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1027 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1028 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1029 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1031 &sensor_dev_attr_pwm1.dev_attr.attr,
1032 &sensor_dev_attr_pwm2.dev_attr.attr,
1033 &sensor_dev_attr_pwm3.dev_attr.attr,
1034 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1035 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1036 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1038 &sensor_dev_attr_in0_input.dev_attr.attr,
1039 &sensor_dev_attr_in1_input.dev_attr.attr,
1040 &sensor_dev_attr_in2_input.dev_attr.attr,
1041 &sensor_dev_attr_in3_input.dev_attr.attr,
1042 &sensor_dev_attr_in0_min.dev_attr.attr,
1043 &sensor_dev_attr_in1_min.dev_attr.attr,
1044 &sensor_dev_attr_in2_min.dev_attr.attr,
1045 &sensor_dev_attr_in3_min.dev_attr.attr,
1046 &sensor_dev_attr_in0_max.dev_attr.attr,
1047 &sensor_dev_attr_in1_max.dev_attr.attr,
1048 &sensor_dev_attr_in2_max.dev_attr.attr,
1049 &sensor_dev_attr_in3_max.dev_attr.attr,
1050 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1051 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1052 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1053 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1055 &sensor_dev_attr_temp1_input.dev_attr.attr,
1056 &sensor_dev_attr_temp2_input.dev_attr.attr,
1057 &sensor_dev_attr_temp3_input.dev_attr.attr,
1058 &sensor_dev_attr_temp1_min.dev_attr.attr,
1059 &sensor_dev_attr_temp2_min.dev_attr.attr,
1060 &sensor_dev_attr_temp3_min.dev_attr.attr,
1061 &sensor_dev_attr_temp1_max.dev_attr.attr,
1062 &sensor_dev_attr_temp2_max.dev_attr.attr,
1063 &sensor_dev_attr_temp3_max.dev_attr.attr,
1064 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1065 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1066 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1067 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1068 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1070 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1071 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1072 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1073 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1074 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1075 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1076 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1077 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1078 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1079 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr,
1080 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr,
1081 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr,
1083 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1084 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1085 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1086 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1087 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1088 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1089 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1090 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1091 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1092 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1093 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1094 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1097 &dev_attr_cpu0_vid.attr,
1098 &dev_attr_alarms.attr,
1102 static const struct attribute_group lm85_group = {
1103 .attrs = lm85_attributes,
1106 static struct attribute *lm85_attributes_in4[] = {
1107 &sensor_dev_attr_in4_input.dev_attr.attr,
1108 &sensor_dev_attr_in4_min.dev_attr.attr,
1109 &sensor_dev_attr_in4_max.dev_attr.attr,
1110 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1114 static const struct attribute_group lm85_group_in4 = {
1115 .attrs = lm85_attributes_in4,
1118 static struct attribute *lm85_attributes_in567[] = {
1119 &sensor_dev_attr_in5_input.dev_attr.attr,
1120 &sensor_dev_attr_in6_input.dev_attr.attr,
1121 &sensor_dev_attr_in7_input.dev_attr.attr,
1122 &sensor_dev_attr_in5_min.dev_attr.attr,
1123 &sensor_dev_attr_in6_min.dev_attr.attr,
1124 &sensor_dev_attr_in7_min.dev_attr.attr,
1125 &sensor_dev_attr_in5_max.dev_attr.attr,
1126 &sensor_dev_attr_in6_max.dev_attr.attr,
1127 &sensor_dev_attr_in7_max.dev_attr.attr,
1128 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1129 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1130 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1134 static const struct attribute_group lm85_group_in567 = {
1135 .attrs = lm85_attributes_in567,
1138 static int lm85_detect(struct i2c_adapter *adapter, int address,
1141 int company, verstep ;
1142 struct i2c_client *new_client = NULL;
1143 struct lm85_data *data;
1145 const char *type_name = "";
1147 if (!i2c_check_functionality(adapter,
1148 I2C_FUNC_SMBUS_BYTE_DATA)) {
1149 /* We need to be able to do byte I/O */
1153 /* OK. For now, we presume we have a valid client. We now create the
1154 client structure, even though we cannot fill it completely yet.
1155 But it allows us to access lm85_{read,write}_value. */
1157 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1162 new_client = &data->client;
1163 i2c_set_clientdata(new_client, data);
1164 new_client->addr = address;
1165 new_client->adapter = adapter;
1166 new_client->driver = &lm85_driver;
1167 new_client->flags = 0;
1169 /* Now, we do the remaining detection. */
1171 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1172 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1174 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1175 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1176 i2c_adapter_id(new_client->adapter), new_client->addr,
1179 /* If auto-detecting, Determine the chip type. */
1181 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1182 i2c_adapter_id(adapter), address );
1183 if( company == LM85_COMPANY_NATIONAL
1184 && verstep == LM85_VERSTEP_LM85C ) {
1186 } else if( company == LM85_COMPANY_NATIONAL
1187 && verstep == LM85_VERSTEP_LM85B ) {
1189 } else if( company == LM85_COMPANY_NATIONAL
1190 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1191 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1192 " Defaulting to LM85.\n", verstep);
1194 } else if( company == LM85_COMPANY_ANALOG_DEV
1195 && verstep == LM85_VERSTEP_ADM1027 ) {
1197 } else if( company == LM85_COMPANY_ANALOG_DEV
1198 && (verstep == LM85_VERSTEP_ADT7463
1199 || verstep == LM85_VERSTEP_ADT7463C) ) {
1201 } else if( company == LM85_COMPANY_ANALOG_DEV
1202 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1203 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1204 " Defaulting to Generic LM85.\n", verstep );
1206 } else if( company == LM85_COMPANY_SMSC
1207 && (verstep == LM85_VERSTEP_EMC6D100_A0
1208 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1209 /* Unfortunately, we can't tell a '100 from a '101
1210 * from the registers. Since a '101 is a '100
1211 * in a package with fewer pins and therefore no
1212 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1213 * inputs read 0, then it's a '101.
1216 } else if( company == LM85_COMPANY_SMSC
1217 && verstep == LM85_VERSTEP_EMC6D102) {
1219 } else if( company == LM85_COMPANY_SMSC
1220 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1221 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1222 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1223 " Defaulting to Generic LM85.\n", verstep );
1225 } else if( kind == any_chip
1226 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1227 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1228 /* Leave kind as "any_chip" */
1230 dev_dbg(&adapter->dev, "Autodetection failed\n");
1231 /* Not an LM85 ... */
1232 if( kind == any_chip ) { /* User used force=x,y */
1233 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1234 " found at %d,0x%02x. Try force_lm85c.\n",
1235 i2c_adapter_id(adapter), address );
1242 /* Fill in the chip specific driver values */
1243 if ( kind == any_chip ) {
1245 } else if ( kind == lm85b ) {
1246 type_name = "lm85b";
1247 } else if ( kind == lm85c ) {
1248 type_name = "lm85c";
1249 } else if ( kind == adm1027 ) {
1250 type_name = "adm1027";
1251 } else if ( kind == adt7463 ) {
1252 type_name = "adt7463";
1253 } else if ( kind == emc6d100){
1254 type_name = "emc6d100";
1255 } else if ( kind == emc6d102 ) {
1256 type_name = "emc6d102";
1258 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1260 /* Fill in the remaining client fields */
1263 mutex_init(&data->update_lock);
1265 /* Tell the I2C layer a new client has arrived */
1266 if ((err = i2c_attach_client(new_client)))
1269 /* Set the VRM version */
1270 data->vrm = vid_which_vrm();
1272 /* Initialize the LM85 chip */
1273 lm85_init_client(new_client);
1275 /* Register sysfs hooks */
1276 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group)))
1279 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1280 as a sixth digital VID input rather than an analog input. */
1281 data->vid = lm85_read_value(new_client, LM85_REG_VID);
1282 if (!(kind == adt7463 && (data->vid & 0x80)))
1283 if ((err = sysfs_create_group(&new_client->dev.kobj,
1287 /* The EMC6D100 has 3 additional voltage inputs */
1288 if (kind == emc6d100)
1289 if ((err = sysfs_create_group(&new_client->dev.kobj,
1290 &lm85_group_in567)))
1293 data->hwmon_dev = hwmon_device_register(&new_client->dev);
1294 if (IS_ERR(data->hwmon_dev)) {
1295 err = PTR_ERR(data->hwmon_dev);
1301 /* Error out and cleanup code */
1303 sysfs_remove_group(&new_client->dev.kobj, &lm85_group);
1304 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in4);
1305 if (kind == emc6d100)
1306 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in567);
1308 i2c_detach_client(new_client);
1315 static int lm85_detach_client(struct i2c_client *client)
1317 struct lm85_data *data = i2c_get_clientdata(client);
1318 hwmon_device_unregister(data->hwmon_dev);
1319 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1320 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1321 if (data->type == emc6d100)
1322 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1323 i2c_detach_client(client);
1329 static int lm85_read_value(struct i2c_client *client, u8 reg)
1333 /* What size location is it? */
1335 case LM85_REG_FAN(0) : /* Read WORD data */
1336 case LM85_REG_FAN(1) :
1337 case LM85_REG_FAN(2) :
1338 case LM85_REG_FAN(3) :
1339 case LM85_REG_FAN_MIN(0) :
1340 case LM85_REG_FAN_MIN(1) :
1341 case LM85_REG_FAN_MIN(2) :
1342 case LM85_REG_FAN_MIN(3) :
1343 case LM85_REG_ALARM1 : /* Read both bytes at once */
1344 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1345 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1347 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1348 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1349 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1351 default: /* Read BYTE data */
1352 res = i2c_smbus_read_byte_data(client, reg);
1359 static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1364 case LM85_REG_FAN(0) : /* Write WORD data */
1365 case LM85_REG_FAN(1) :
1366 case LM85_REG_FAN(2) :
1367 case LM85_REG_FAN(3) :
1368 case LM85_REG_FAN_MIN(0) :
1369 case LM85_REG_FAN_MIN(1) :
1370 case LM85_REG_FAN_MIN(2) :
1371 case LM85_REG_FAN_MIN(3) :
1372 /* NOTE: ALARM is read only, so not included here */
1373 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1374 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1376 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1377 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1378 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1380 default: /* Write BYTE data */
1381 res = i2c_smbus_write_byte_data(client, reg, value);
1388 static void lm85_init_client(struct i2c_client *client)
1391 struct lm85_data *data = i2c_get_clientdata(client);
1393 dev_dbg(&client->dev, "Initializing device\n");
1395 /* Warn if part was not "READY" */
1396 value = lm85_read_value(client, LM85_REG_CONFIG);
1397 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1398 if( value & 0x02 ) {
1399 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1400 i2c_adapter_id(client->adapter), client->addr );
1402 if( ! (value & 0x04) ) {
1403 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1404 i2c_adapter_id(client->adapter), client->addr );
1407 && ( data->type == adm1027
1408 || data->type == adt7463 ) ) {
1409 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1410 "Please report this to the lm85 maintainer.\n",
1411 i2c_adapter_id(client->adapter), client->addr );
1414 /* WE INTENTIONALLY make no changes to the limits,
1415 * offsets, pwms, fans and zones. If they were
1416 * configured, we don't want to mess with them.
1417 * If they weren't, the default is 100% PWM, no
1418 * control and will suffice until 'sensors -s'
1419 * can be run by the user.
1422 /* Start monitoring */
1423 value = lm85_read_value(client, LM85_REG_CONFIG);
1424 /* Try to clear LOCK, Set START, save everything else */
1425 value = (value & ~ 0x02) | 0x01 ;
1426 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1427 lm85_write_value(client, LM85_REG_CONFIG, value);
1430 static struct lm85_data *lm85_update_device(struct device *dev)
1432 struct i2c_client *client = to_i2c_client(dev);
1433 struct lm85_data *data = i2c_get_clientdata(client);
1436 mutex_lock(&data->update_lock);
1438 if ( !data->valid ||
1439 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1440 /* Things that change quickly */
1441 dev_dbg(&client->dev, "Reading sensor values\n");
1443 /* Have to read extended bits first to "freeze" the
1444 * more significant bits that are read later.
1445 * There are 2 additional resolution bits per channel and we
1446 * have room for 4, so we shift them to the left.
1448 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1449 int ext1 = lm85_read_value(client,
1450 ADM1027_REG_EXTEND_ADC1);
1451 int ext2 = lm85_read_value(client,
1452 ADM1027_REG_EXTEND_ADC2);
1453 int val = (ext1 << 8) + ext2;
1455 for(i = 0; i <= 4; i++)
1456 data->in_ext[i] = ((val>>(i * 2))&0x03) << 2;
1458 for(i = 0; i <= 2; i++)
1459 data->temp_ext[i] = (val>>((i + 4) * 2))&0x0c;
1462 data->vid = lm85_read_value(client, LM85_REG_VID);
1464 for (i = 0; i <= 3; ++i) {
1466 lm85_read_value(client, LM85_REG_IN(i));
1469 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1470 data->in[4] = lm85_read_value(client,
1474 for (i = 0; i <= 3; ++i) {
1476 lm85_read_value(client, LM85_REG_FAN(i));
1479 for (i = 0; i <= 2; ++i) {
1481 lm85_read_value(client, LM85_REG_TEMP(i));
1484 for (i = 0; i <= 2; ++i) {
1486 lm85_read_value(client, LM85_REG_PWM(i));
1489 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1491 if ( data->type == adt7463 ) {
1492 if( data->therm_total < ULONG_MAX - 256 ) {
1493 data->therm_total +=
1494 lm85_read_value(client, ADT7463_REG_THERM );
1496 } else if ( data->type == emc6d100 ) {
1497 /* Three more voltage sensors */
1498 for (i = 5; i <= 7; ++i) {
1500 lm85_read_value(client, EMC6D100_REG_IN(i));
1502 /* More alarm bits */
1504 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1505 } else if (data->type == emc6d102 ) {
1506 /* Have to read LSB bits after the MSB ones because
1507 the reading of the MSB bits has frozen the
1508 LSBs (backward from the ADM1027).
1510 int ext1 = lm85_read_value(client,
1511 EMC6D102_REG_EXTEND_ADC1);
1512 int ext2 = lm85_read_value(client,
1513 EMC6D102_REG_EXTEND_ADC2);
1514 int ext3 = lm85_read_value(client,
1515 EMC6D102_REG_EXTEND_ADC3);
1516 int ext4 = lm85_read_value(client,
1517 EMC6D102_REG_EXTEND_ADC4);
1518 data->in_ext[0] = ext3 & 0x0f;
1519 data->in_ext[1] = ext4 & 0x0f;
1520 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1521 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1522 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1524 data->temp_ext[0] = ext1 & 0x0f;
1525 data->temp_ext[1] = ext2 & 0x0f;
1526 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1529 data->last_reading = jiffies ;
1530 }; /* last_reading */
1532 if ( !data->valid ||
1533 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1534 /* Things that don't change often */
1535 dev_dbg(&client->dev, "Reading config values\n");
1537 for (i = 0; i <= 3; ++i) {
1539 lm85_read_value(client, LM85_REG_IN_MIN(i));
1541 lm85_read_value(client, LM85_REG_IN_MAX(i));
1544 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1545 data->in_min[4] = lm85_read_value(client,
1546 LM85_REG_IN_MIN(4));
1547 data->in_max[4] = lm85_read_value(client,
1548 LM85_REG_IN_MAX(4));
1551 if ( data->type == emc6d100 ) {
1552 for (i = 5; i <= 7; ++i) {
1554 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1556 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1560 for (i = 0; i <= 3; ++i) {
1562 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1565 for (i = 0; i <= 2; ++i) {
1567 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1569 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1572 for (i = 0; i <= 2; ++i) {
1574 data->autofan[i].config =
1575 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1576 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1577 data->autofan[i].freq = val & 0x07 ;
1578 data->zone[i].range = (val >> 4) & 0x0f ;
1579 data->autofan[i].min_pwm =
1580 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1581 data->zone[i].limit =
1582 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1583 data->zone[i].critical =
1584 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1587 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1588 data->smooth[0] = i & 0x0f ;
1589 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1590 data->autofan[0].min_off = (i & 0x20) != 0 ;
1591 data->autofan[1].min_off = (i & 0x40) != 0 ;
1592 data->autofan[2].min_off = (i & 0x80) != 0 ;
1593 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1594 data->smooth[1] = (i>>4) & 0x0f ;
1595 data->smooth[2] = i & 0x0f ;
1597 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1598 data->zone[0].hyst = (i>>4) & 0x0f ;
1599 data->zone[1].hyst = i & 0x0f ;
1601 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1602 data->zone[2].hyst = (i>>4) & 0x0f ;
1604 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1605 data->tach_mode = lm85_read_value(client,
1606 LM85_REG_TACH_MODE );
1607 data->spinup_ctl = lm85_read_value(client,
1608 LM85_REG_SPINUP_CTL );
1609 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1610 if ( data->type == adt7463 ) {
1611 for (i = 0; i <= 2; ++i) {
1612 data->oppoint[i] = lm85_read_value(client,
1613 ADT7463_REG_OPPOINT(i) );
1615 data->tmin_ctl = lm85_read_value(client,
1616 ADT7463_REG_TMIN_CTL1 );
1617 data->therm_limit = lm85_read_value(client,
1618 ADT7463_REG_THERM_LIMIT );
1620 for (i = 0; i <= 2; ++i) {
1621 data->temp_offset[i] = lm85_read_value(client,
1622 ADM1027_REG_TEMP_OFFSET(i) );
1624 data->tach_mode = lm85_read_value(client,
1625 ADM1027_REG_CONFIG3 );
1626 data->fan_ppr = lm85_read_value(client,
1627 ADM1027_REG_FAN_PPR );
1630 data->last_config = jiffies;
1631 }; /* last_config */
1635 mutex_unlock(&data->update_lock);
1641 static int __init sm_lm85_init(void)
1643 return i2c_add_driver(&lm85_driver);
1646 static void __exit sm_lm85_exit(void)
1648 i2c_del_driver(&lm85_driver);
1651 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1652 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1653 * post 2.7.0 CVS changes.
1655 MODULE_LICENSE("GPL");
1656 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1657 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1659 module_init(sm_lm85_init);
1660 module_exit(sm_lm85_exit);