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 #define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534))
149 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val))
151 /* Temperature is reported in .001 degC increments */
152 #define TEMP_TO_REG(val) \
153 SENSORS_LIMIT(SCALE(val,1000,1),-127,127)
154 #define TEMPEXT_FROM_REG(val,ext) \
155 SCALE(((val) << 4) + (ext), 16, 1000)
156 #define TEMP_FROM_REG(val) ((val) * 1000)
158 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
159 #define PWM_FROM_REG(val) (val)
162 /* ZONEs have the following parameters:
163 * Limit (low) temp, 1. degC
164 * Hysteresis (below limit), 1. degC (0-15)
165 * Range of speed control, .1 degC (2-80)
166 * Critical (high) temp, 1. degC
168 * FAN PWMs have the following parameters:
169 * Reference Zone, 1, 2, 3, etc.
170 * Spinup time, .05 sec
171 * PWM value at limit/low temp, 1 count
172 * PWM Frequency, 1. Hz
173 * PWM is Min or OFF below limit, flag
174 * Invert PWM output, flag
176 * Some chips filter the temp, others the fan.
177 * Filter constant (or disabled) .1 seconds
180 /* These are the zone temperature range encodings in .001 degree C */
181 static int lm85_range_map[] = {
182 2000, 2500, 3300, 4000, 5000, 6600,
183 8000, 10000, 13300, 16000, 20000, 26600,
184 32000, 40000, 53300, 80000
186 static int RANGE_TO_REG( int range )
190 if ( range < lm85_range_map[0] ) {
192 } else if ( range > lm85_range_map[15] ) {
194 } else { /* find closest match */
195 for ( i = 14 ; i >= 0 ; --i ) {
196 if ( range > lm85_range_map[i] ) { /* range bracketed */
197 if ((lm85_range_map[i+1] - range) <
198 (range - lm85_range_map[i])) {
208 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f])
210 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
211 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
212 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
213 * is ignored, or set to 0.
215 /* These are the PWM frequency encodings */
216 static int lm85_freq_map[] = { /* .1 Hz */
217 100, 150, 230, 300, 380, 470, 620, 940
219 static int FREQ_TO_REG( int freq )
223 if( freq >= lm85_freq_map[7] ) { return 7 ; }
224 for( i = 0 ; i < 7 ; ++i )
225 if( freq <= lm85_freq_map[i] )
229 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07])
231 /* Since we can't use strings, I'm abusing these numbers
232 * to stand in for the following meanings:
233 * 1 -- PWM responds to Zone 1
234 * 2 -- PWM responds to Zone 2
235 * 3 -- PWM responds to Zone 3
236 * 23 -- PWM responds to the higher temp of Zone 2 or 3
237 * 123 -- PWM responds to highest of Zone 1, 2, or 3
238 * 0 -- PWM is always at 0% (ie, off)
239 * -1 -- PWM is always at 100%
240 * -2 -- PWM responds to manual control
243 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
244 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07])
246 static int ZONE_TO_REG( int zone )
250 for( i = 0 ; i <= 7 ; ++i )
251 if( zone == lm85_zone_map[i] )
253 if( i > 7 ) /* Not found. */
254 i = 3; /* Always 100% */
255 return( (i & 0x07)<<5 );
258 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15))
259 #define HYST_FROM_REG(val) ((val)*1000)
261 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127))
262 #define OFFSET_FROM_REG(val) ((val)*25)
264 #define PPR_MASK(fan) (0x03<<(fan *2))
265 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2))
266 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1)
268 /* Chip sampling rates
270 * Some sensors are not updated more frequently than once per second
271 * so it doesn't make sense to read them more often than that.
272 * We cache the results and return the saved data if the driver
273 * is called again before a second has elapsed.
275 * Also, there is significant configuration data for this chip
276 * given the automatic PWM fan control that is possible. There
277 * are about 47 bytes of config data to only 22 bytes of actual
278 * readings. So, we keep the config data up to date in the cache
279 * when it is written and only sample it once every 1 *minute*
281 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
282 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
284 /* LM85 can automatically adjust fan speeds based on temperature
285 * This structure encapsulates an entire Zone config. There are
286 * three zones (one for each temperature input) on the lm85
289 s8 limit; /* Low temp limit */
290 u8 hyst; /* Low limit hysteresis. (0-15) */
291 u8 range; /* Temp range, encoded */
292 s8 critical; /* "All fans ON" temp limit */
293 u8 off_desired; /* Actual "off" temperature specified. Preserved
294 * to prevent "drift" as other autofan control
297 u8 max_desired; /* Actual "max" temperature specified. Preserved
298 * to prevent "drift" as other autofan control
303 struct lm85_autofan {
304 u8 config; /* Register value */
305 u8 freq; /* PWM frequency, encoded */
306 u8 min_pwm; /* Minimum PWM value, encoded */
307 u8 min_off; /* Min PWM or OFF below "limit", flag */
310 /* For each registered chip, we need to keep some data in memory.
311 The structure is dynamically allocated. */
313 struct i2c_client client;
314 struct device *hwmon_dev;
317 struct mutex update_lock;
318 int valid; /* !=0 if following fields are valid */
319 unsigned long last_reading; /* In jiffies */
320 unsigned long last_config; /* In jiffies */
322 u8 in[8]; /* Register value */
323 u8 in_max[8]; /* Register value */
324 u8 in_min[8]; /* Register value */
325 s8 temp[3]; /* Register value */
326 s8 temp_min[3]; /* Register value */
327 s8 temp_max[3]; /* Register value */
328 s8 temp_offset[3]; /* Register value */
329 u16 fan[4]; /* Register value */
330 u16 fan_min[4]; /* Register value */
331 u8 pwm[3]; /* Register value */
332 u8 spinup_ctl; /* Register encoding, combined */
333 u8 tach_mode; /* Register encoding, combined */
334 u8 temp_ext[3]; /* Decoded values */
335 u8 in_ext[8]; /* Decoded values */
336 u8 fan_ppr; /* Register value */
337 u8 smooth[3]; /* Register encoding */
338 u8 vid; /* Register value */
339 u8 vrm; /* VRM version */
340 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
341 u8 oppoint[3]; /* Register value */
342 u16 tmin_ctl; /* Register value */
343 unsigned long therm_total; /* Cummulative therm count */
344 u8 therm_limit; /* Register value */
345 u32 alarms; /* Register encoding, combined */
346 struct lm85_autofan autofan[3];
347 struct lm85_zone zone[3];
350 static int lm85_attach_adapter(struct i2c_adapter *adapter);
351 static int lm85_detect(struct i2c_adapter *adapter, int address,
353 static int lm85_detach_client(struct i2c_client *client);
355 static int lm85_read_value(struct i2c_client *client, u8 reg);
356 static int lm85_write_value(struct i2c_client *client, u8 reg, int value);
357 static struct lm85_data *lm85_update_device(struct device *dev);
358 static void lm85_init_client(struct i2c_client *client);
361 static struct i2c_driver lm85_driver = {
365 .id = I2C_DRIVERID_LM85,
366 .attach_adapter = lm85_attach_adapter,
367 .detach_client = lm85_detach_client,
372 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
375 int nr = to_sensor_dev_attr(attr)->index;
376 struct lm85_data *data = lm85_update_device(dev);
377 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
380 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
383 int nr = to_sensor_dev_attr(attr)->index;
384 struct lm85_data *data = lm85_update_device(dev);
385 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
388 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
389 const char *buf, size_t count)
391 int nr = to_sensor_dev_attr(attr)->index;
392 struct i2c_client *client = to_i2c_client(dev);
393 struct lm85_data *data = i2c_get_clientdata(client);
394 long val = simple_strtol(buf, NULL, 10);
396 mutex_lock(&data->update_lock);
397 data->fan_min[nr] = FAN_TO_REG(val);
398 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
399 mutex_unlock(&data->update_lock);
403 #define show_fan_offset(offset) \
404 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
405 show_fan, NULL, offset - 1); \
406 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
407 show_fan_min, set_fan_min, offset - 1)
414 /* vid, vrm, alarms */
416 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
418 struct lm85_data *data = lm85_update_device(dev);
421 if (data->type == adt7463 && (data->vid & 0x80)) {
422 /* 6-pin VID (VRM 10) */
423 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
425 /* 5-pin VID (VRM 9) */
426 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
429 return sprintf(buf, "%d\n", vid);
432 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
434 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
436 struct lm85_data *data = lm85_update_device(dev);
437 return sprintf(buf, "%ld\n", (long) data->vrm);
440 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
442 struct i2c_client *client = to_i2c_client(dev);
443 struct lm85_data *data = i2c_get_clientdata(client);
446 val = simple_strtoul(buf, NULL, 10);
451 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
453 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
455 struct lm85_data *data = lm85_update_device(dev);
456 return sprintf(buf, "%u\n", data->alarms);
459 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
461 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
464 int nr = to_sensor_dev_attr(attr)->index;
465 struct lm85_data *data = lm85_update_device(dev);
466 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
469 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
470 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
471 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
472 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
473 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
474 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
475 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
476 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
477 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
478 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
479 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
480 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
481 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
482 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
483 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
484 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
485 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
489 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
492 int nr = to_sensor_dev_attr(attr)->index;
493 struct lm85_data *data = lm85_update_device(dev);
494 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) );
497 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
498 const char *buf, size_t count)
500 int nr = to_sensor_dev_attr(attr)->index;
501 struct i2c_client *client = to_i2c_client(dev);
502 struct lm85_data *data = i2c_get_clientdata(client);
503 long val = simple_strtol(buf, NULL, 10);
505 mutex_lock(&data->update_lock);
506 data->pwm[nr] = PWM_TO_REG(val);
507 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
508 mutex_unlock(&data->update_lock);
512 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
515 int nr = to_sensor_dev_attr(attr)->index;
516 struct lm85_data *data = lm85_update_device(dev);
519 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
520 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) );
523 #define show_pwm_reg(offset) \
524 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
525 show_pwm, set_pwm, offset - 1); \
526 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \
527 show_pwm_enable, NULL, offset - 1)
535 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
538 int nr = to_sensor_dev_attr(attr)->index;
539 struct lm85_data *data = lm85_update_device(dev);
540 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
545 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
548 int nr = to_sensor_dev_attr(attr)->index;
549 struct lm85_data *data = lm85_update_device(dev);
550 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
553 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
554 const char *buf, size_t count)
556 int nr = to_sensor_dev_attr(attr)->index;
557 struct i2c_client *client = to_i2c_client(dev);
558 struct lm85_data *data = i2c_get_clientdata(client);
559 long val = simple_strtol(buf, NULL, 10);
561 mutex_lock(&data->update_lock);
562 data->in_min[nr] = INS_TO_REG(nr, val);
563 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
564 mutex_unlock(&data->update_lock);
568 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
571 int nr = to_sensor_dev_attr(attr)->index;
572 struct lm85_data *data = lm85_update_device(dev);
573 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
576 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
577 const char *buf, size_t count)
579 int nr = to_sensor_dev_attr(attr)->index;
580 struct i2c_client *client = to_i2c_client(dev);
581 struct lm85_data *data = i2c_get_clientdata(client);
582 long val = simple_strtol(buf, NULL, 10);
584 mutex_lock(&data->update_lock);
585 data->in_max[nr] = INS_TO_REG(nr, val);
586 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
587 mutex_unlock(&data->update_lock);
591 #define show_in_reg(offset) \
592 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
593 show_in, NULL, offset); \
594 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
595 show_in_min, set_in_min, offset); \
596 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
597 show_in_max, set_in_max, offset)
610 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
613 int nr = to_sensor_dev_attr(attr)->index;
614 struct lm85_data *data = lm85_update_device(dev);
615 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
616 data->temp_ext[nr]));
619 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
622 int nr = to_sensor_dev_attr(attr)->index;
623 struct lm85_data *data = lm85_update_device(dev);
624 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
627 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
628 const char *buf, size_t count)
630 int nr = to_sensor_dev_attr(attr)->index;
631 struct i2c_client *client = to_i2c_client(dev);
632 struct lm85_data *data = i2c_get_clientdata(client);
633 long val = simple_strtol(buf, NULL, 10);
635 mutex_lock(&data->update_lock);
636 data->temp_min[nr] = TEMP_TO_REG(val);
637 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
638 mutex_unlock(&data->update_lock);
642 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
645 int nr = to_sensor_dev_attr(attr)->index;
646 struct lm85_data *data = lm85_update_device(dev);
647 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
650 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
651 const char *buf, size_t count)
653 int nr = to_sensor_dev_attr(attr)->index;
654 struct i2c_client *client = to_i2c_client(dev);
655 struct lm85_data *data = i2c_get_clientdata(client);
656 long val = simple_strtol(buf, NULL, 10);
658 mutex_lock(&data->update_lock);
659 data->temp_max[nr] = TEMP_TO_REG(val);
660 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
661 mutex_unlock(&data->update_lock);
665 #define show_temp_reg(offset) \
666 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
667 show_temp, NULL, offset - 1); \
668 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
669 show_temp_min, set_temp_min, offset - 1); \
670 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
671 show_temp_max, set_temp_max, offset - 1);
678 /* Automatic PWM control */
680 static ssize_t show_pwm_auto_channels(struct device *dev,
681 struct device_attribute *attr, char *buf)
683 int nr = to_sensor_dev_attr(attr)->index;
684 struct lm85_data *data = lm85_update_device(dev);
685 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
688 static ssize_t set_pwm_auto_channels(struct device *dev,
689 struct device_attribute *attr, const char *buf, size_t count)
691 int nr = to_sensor_dev_attr(attr)->index;
692 struct i2c_client *client = to_i2c_client(dev);
693 struct lm85_data *data = i2c_get_clientdata(client);
694 long val = simple_strtol(buf, NULL, 10);
696 mutex_lock(&data->update_lock);
697 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
699 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
700 data->autofan[nr].config);
701 mutex_unlock(&data->update_lock);
705 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
706 struct device_attribute *attr, char *buf)
708 int nr = to_sensor_dev_attr(attr)->index;
709 struct lm85_data *data = lm85_update_device(dev);
710 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
713 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
714 struct device_attribute *attr, const char *buf, size_t count)
716 int nr = to_sensor_dev_attr(attr)->index;
717 struct i2c_client *client = to_i2c_client(dev);
718 struct lm85_data *data = i2c_get_clientdata(client);
719 long val = simple_strtol(buf, NULL, 10);
721 mutex_lock(&data->update_lock);
722 data->autofan[nr].min_pwm = PWM_TO_REG(val);
723 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
724 data->autofan[nr].min_pwm);
725 mutex_unlock(&data->update_lock);
729 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
730 struct device_attribute *attr, char *buf)
732 int nr = to_sensor_dev_attr(attr)->index;
733 struct lm85_data *data = lm85_update_device(dev);
734 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
737 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
738 struct device_attribute *attr, const char *buf, size_t count)
740 int nr = to_sensor_dev_attr(attr)->index;
741 struct i2c_client *client = to_i2c_client(dev);
742 struct lm85_data *data = i2c_get_clientdata(client);
743 long val = simple_strtol(buf, NULL, 10);
745 mutex_lock(&data->update_lock);
746 data->autofan[nr].min_off = val;
747 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
749 | (data->autofan[0].min_off ? 0x20 : 0)
750 | (data->autofan[1].min_off ? 0x40 : 0)
751 | (data->autofan[2].min_off ? 0x80 : 0)
753 mutex_unlock(&data->update_lock);
757 static ssize_t show_pwm_auto_pwm_freq(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", FREQ_FROM_REG(data->autofan[nr].freq));
765 static ssize_t set_pwm_auto_pwm_freq(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].freq = FREQ_TO_REG(val);
775 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
776 (data->zone[nr].range << 4)
777 | data->autofan[nr].freq
779 mutex_unlock(&data->update_lock);
783 #define pwm_auto(offset) \
784 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
785 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
786 set_pwm_auto_channels, offset - 1); \
787 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
788 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
789 set_pwm_auto_pwm_min, offset - 1); \
790 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
791 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
792 set_pwm_auto_pwm_minctl, offset - 1); \
793 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
794 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
795 set_pwm_auto_pwm_freq, offset - 1);
801 /* Temperature settings for automatic PWM control */
803 static ssize_t show_temp_auto_temp_off(struct device *dev,
804 struct device_attribute *attr, char *buf)
806 int nr = to_sensor_dev_attr(attr)->index;
807 struct lm85_data *data = lm85_update_device(dev);
808 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
809 HYST_FROM_REG(data->zone[nr].hyst));
812 static ssize_t set_temp_auto_temp_off(struct device *dev,
813 struct device_attribute *attr, const char *buf, size_t count)
815 int nr = to_sensor_dev_attr(attr)->index;
816 struct i2c_client *client = to_i2c_client(dev);
817 struct lm85_data *data = i2c_get_clientdata(client);
819 long val = simple_strtol(buf, NULL, 10);
821 mutex_lock(&data->update_lock);
822 min = TEMP_FROM_REG(data->zone[nr].limit);
823 data->zone[nr].off_desired = TEMP_TO_REG(val);
824 data->zone[nr].hyst = HYST_TO_REG(min - val);
825 if ( nr == 0 || nr == 1 ) {
826 lm85_write_value(client, LM85_REG_AFAN_HYST1,
827 (data->zone[0].hyst << 4)
831 lm85_write_value(client, LM85_REG_AFAN_HYST2,
832 (data->zone[2].hyst << 4)
835 mutex_unlock(&data->update_lock);
839 static ssize_t show_temp_auto_temp_min(struct device *dev,
840 struct device_attribute *attr, char *buf)
842 int nr = to_sensor_dev_attr(attr)->index;
843 struct lm85_data *data = lm85_update_device(dev);
844 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) );
847 static ssize_t set_temp_auto_temp_min(struct device *dev,
848 struct device_attribute *attr, const char *buf, size_t count)
850 int nr = to_sensor_dev_attr(attr)->index;
851 struct i2c_client *client = to_i2c_client(dev);
852 struct lm85_data *data = i2c_get_clientdata(client);
853 long val = simple_strtol(buf, NULL, 10);
855 mutex_lock(&data->update_lock);
856 data->zone[nr].limit = TEMP_TO_REG(val);
857 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
858 data->zone[nr].limit);
860 /* Update temp_auto_max and temp_auto_range */
861 data->zone[nr].range = RANGE_TO_REG(
862 TEMP_FROM_REG(data->zone[nr].max_desired) -
863 TEMP_FROM_REG(data->zone[nr].limit));
864 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
865 ((data->zone[nr].range & 0x0f) << 4)
866 | (data->autofan[nr].freq & 0x07));
868 /* Update temp_auto_hyst and temp_auto_off */
869 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
870 data->zone[nr].limit) - TEMP_FROM_REG(
871 data->zone[nr].off_desired));
872 if ( nr == 0 || nr == 1 ) {
873 lm85_write_value(client, LM85_REG_AFAN_HYST1,
874 (data->zone[0].hyst << 4)
878 lm85_write_value(client, LM85_REG_AFAN_HYST2,
879 (data->zone[2].hyst << 4)
882 mutex_unlock(&data->update_lock);
886 static ssize_t show_temp_auto_temp_max(struct device *dev,
887 struct device_attribute *attr, char *buf)
889 int nr = to_sensor_dev_attr(attr)->index;
890 struct lm85_data *data = lm85_update_device(dev);
891 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
892 RANGE_FROM_REG(data->zone[nr].range));
895 static ssize_t set_temp_auto_temp_max(struct device *dev,
896 struct device_attribute *attr, const char *buf, size_t count)
898 int nr = to_sensor_dev_attr(attr)->index;
899 struct i2c_client *client = to_i2c_client(dev);
900 struct lm85_data *data = i2c_get_clientdata(client);
902 long val = simple_strtol(buf, NULL, 10);
904 mutex_lock(&data->update_lock);
905 min = TEMP_FROM_REG(data->zone[nr].limit);
906 data->zone[nr].max_desired = TEMP_TO_REG(val);
907 data->zone[nr].range = RANGE_TO_REG(
909 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
910 ((data->zone[nr].range & 0x0f) << 4)
911 | (data->autofan[nr].freq & 0x07));
912 mutex_unlock(&data->update_lock);
916 static ssize_t show_temp_auto_temp_crit(struct device *dev,
917 struct device_attribute *attr, char *buf)
919 int nr = to_sensor_dev_attr(attr)->index;
920 struct lm85_data *data = lm85_update_device(dev);
921 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
924 static ssize_t set_temp_auto_temp_crit(struct device *dev,
925 struct device_attribute *attr,const char *buf, size_t count)
927 int nr = to_sensor_dev_attr(attr)->index;
928 struct i2c_client *client = to_i2c_client(dev);
929 struct lm85_data *data = i2c_get_clientdata(client);
930 long val = simple_strtol(buf, NULL, 10);
932 mutex_lock(&data->update_lock);
933 data->zone[nr].critical = TEMP_TO_REG(val);
934 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
935 data->zone[nr].critical);
936 mutex_unlock(&data->update_lock);
940 #define temp_auto(offset) \
941 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
942 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
943 set_temp_auto_temp_off, offset - 1); \
944 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
945 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
946 set_temp_auto_temp_min, offset - 1); \
947 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
948 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
949 set_temp_auto_temp_max, offset - 1); \
950 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
951 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
952 set_temp_auto_temp_crit, offset - 1);
958 static int lm85_attach_adapter(struct i2c_adapter *adapter)
960 if (!(adapter->class & I2C_CLASS_HWMON))
962 return i2c_probe(adapter, &addr_data, lm85_detect);
965 static struct attribute *lm85_attributes[] = {
966 &sensor_dev_attr_fan1_input.dev_attr.attr,
967 &sensor_dev_attr_fan2_input.dev_attr.attr,
968 &sensor_dev_attr_fan3_input.dev_attr.attr,
969 &sensor_dev_attr_fan4_input.dev_attr.attr,
970 &sensor_dev_attr_fan1_min.dev_attr.attr,
971 &sensor_dev_attr_fan2_min.dev_attr.attr,
972 &sensor_dev_attr_fan3_min.dev_attr.attr,
973 &sensor_dev_attr_fan4_min.dev_attr.attr,
974 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
975 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
976 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
977 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
979 &sensor_dev_attr_pwm1.dev_attr.attr,
980 &sensor_dev_attr_pwm2.dev_attr.attr,
981 &sensor_dev_attr_pwm3.dev_attr.attr,
982 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
983 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
984 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
986 &sensor_dev_attr_in0_input.dev_attr.attr,
987 &sensor_dev_attr_in1_input.dev_attr.attr,
988 &sensor_dev_attr_in2_input.dev_attr.attr,
989 &sensor_dev_attr_in3_input.dev_attr.attr,
990 &sensor_dev_attr_in0_min.dev_attr.attr,
991 &sensor_dev_attr_in1_min.dev_attr.attr,
992 &sensor_dev_attr_in2_min.dev_attr.attr,
993 &sensor_dev_attr_in3_min.dev_attr.attr,
994 &sensor_dev_attr_in0_max.dev_attr.attr,
995 &sensor_dev_attr_in1_max.dev_attr.attr,
996 &sensor_dev_attr_in2_max.dev_attr.attr,
997 &sensor_dev_attr_in3_max.dev_attr.attr,
998 &sensor_dev_attr_in0_alarm.dev_attr.attr,
999 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1000 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1001 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1003 &sensor_dev_attr_temp1_input.dev_attr.attr,
1004 &sensor_dev_attr_temp2_input.dev_attr.attr,
1005 &sensor_dev_attr_temp3_input.dev_attr.attr,
1006 &sensor_dev_attr_temp1_min.dev_attr.attr,
1007 &sensor_dev_attr_temp2_min.dev_attr.attr,
1008 &sensor_dev_attr_temp3_min.dev_attr.attr,
1009 &sensor_dev_attr_temp1_max.dev_attr.attr,
1010 &sensor_dev_attr_temp2_max.dev_attr.attr,
1011 &sensor_dev_attr_temp3_max.dev_attr.attr,
1012 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1013 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1014 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1015 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1016 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1018 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1019 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1020 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1021 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1022 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1023 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1024 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1025 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1026 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1027 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr,
1028 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr,
1029 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr,
1031 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1032 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1033 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1034 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1035 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1036 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1037 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1038 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1039 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1040 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1041 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1042 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1045 &dev_attr_cpu0_vid.attr,
1046 &dev_attr_alarms.attr,
1050 static const struct attribute_group lm85_group = {
1051 .attrs = lm85_attributes,
1054 static struct attribute *lm85_attributes_in4[] = {
1055 &sensor_dev_attr_in4_input.dev_attr.attr,
1056 &sensor_dev_attr_in4_min.dev_attr.attr,
1057 &sensor_dev_attr_in4_max.dev_attr.attr,
1058 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1062 static const struct attribute_group lm85_group_in4 = {
1063 .attrs = lm85_attributes_in4,
1066 static struct attribute *lm85_attributes_in567[] = {
1067 &sensor_dev_attr_in5_input.dev_attr.attr,
1068 &sensor_dev_attr_in6_input.dev_attr.attr,
1069 &sensor_dev_attr_in7_input.dev_attr.attr,
1070 &sensor_dev_attr_in5_min.dev_attr.attr,
1071 &sensor_dev_attr_in6_min.dev_attr.attr,
1072 &sensor_dev_attr_in7_min.dev_attr.attr,
1073 &sensor_dev_attr_in5_max.dev_attr.attr,
1074 &sensor_dev_attr_in6_max.dev_attr.attr,
1075 &sensor_dev_attr_in7_max.dev_attr.attr,
1076 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1077 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1078 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1082 static const struct attribute_group lm85_group_in567 = {
1083 .attrs = lm85_attributes_in567,
1086 static int lm85_detect(struct i2c_adapter *adapter, int address,
1089 int company, verstep ;
1090 struct i2c_client *new_client = NULL;
1091 struct lm85_data *data;
1093 const char *type_name = "";
1095 if (!i2c_check_functionality(adapter,
1096 I2C_FUNC_SMBUS_BYTE_DATA)) {
1097 /* We need to be able to do byte I/O */
1101 /* OK. For now, we presume we have a valid client. We now create the
1102 client structure, even though we cannot fill it completely yet.
1103 But it allows us to access lm85_{read,write}_value. */
1105 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1110 new_client = &data->client;
1111 i2c_set_clientdata(new_client, data);
1112 new_client->addr = address;
1113 new_client->adapter = adapter;
1114 new_client->driver = &lm85_driver;
1115 new_client->flags = 0;
1117 /* Now, we do the remaining detection. */
1119 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1120 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1122 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1123 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1124 i2c_adapter_id(new_client->adapter), new_client->addr,
1127 /* If auto-detecting, Determine the chip type. */
1129 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1130 i2c_adapter_id(adapter), address );
1131 if( company == LM85_COMPANY_NATIONAL
1132 && verstep == LM85_VERSTEP_LM85C ) {
1134 } else if( company == LM85_COMPANY_NATIONAL
1135 && verstep == LM85_VERSTEP_LM85B ) {
1137 } else if( company == LM85_COMPANY_NATIONAL
1138 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1139 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1140 " Defaulting to LM85.\n", verstep);
1142 } else if( company == LM85_COMPANY_ANALOG_DEV
1143 && verstep == LM85_VERSTEP_ADM1027 ) {
1145 } else if( company == LM85_COMPANY_ANALOG_DEV
1146 && (verstep == LM85_VERSTEP_ADT7463
1147 || verstep == LM85_VERSTEP_ADT7463C) ) {
1149 } else if( company == LM85_COMPANY_ANALOG_DEV
1150 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1151 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1152 " Defaulting to Generic LM85.\n", verstep );
1154 } else if( company == LM85_COMPANY_SMSC
1155 && (verstep == LM85_VERSTEP_EMC6D100_A0
1156 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1157 /* Unfortunately, we can't tell a '100 from a '101
1158 * from the registers. Since a '101 is a '100
1159 * in a package with fewer pins and therefore no
1160 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1161 * inputs read 0, then it's a '101.
1164 } else if( company == LM85_COMPANY_SMSC
1165 && verstep == LM85_VERSTEP_EMC6D102) {
1167 } else if( company == LM85_COMPANY_SMSC
1168 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1169 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1170 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1171 " Defaulting to Generic LM85.\n", verstep );
1173 } else if( kind == any_chip
1174 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1175 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1176 /* Leave kind as "any_chip" */
1178 dev_dbg(&adapter->dev, "Autodetection failed\n");
1179 /* Not an LM85 ... */
1180 if( kind == any_chip ) { /* User used force=x,y */
1181 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1182 " found at %d,0x%02x. Try force_lm85c.\n",
1183 i2c_adapter_id(adapter), address );
1190 /* Fill in the chip specific driver values */
1191 if ( kind == any_chip ) {
1193 } else if ( kind == lm85b ) {
1194 type_name = "lm85b";
1195 } else if ( kind == lm85c ) {
1196 type_name = "lm85c";
1197 } else if ( kind == adm1027 ) {
1198 type_name = "adm1027";
1199 } else if ( kind == adt7463 ) {
1200 type_name = "adt7463";
1201 } else if ( kind == emc6d100){
1202 type_name = "emc6d100";
1203 } else if ( kind == emc6d102 ) {
1204 type_name = "emc6d102";
1206 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1208 /* Fill in the remaining client fields */
1211 mutex_init(&data->update_lock);
1213 /* Tell the I2C layer a new client has arrived */
1214 if ((err = i2c_attach_client(new_client)))
1217 /* Set the VRM version */
1218 data->vrm = vid_which_vrm();
1220 /* Initialize the LM85 chip */
1221 lm85_init_client(new_client);
1223 /* Register sysfs hooks */
1224 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group)))
1227 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1228 as a sixth digital VID input rather than an analog input. */
1229 data->vid = lm85_read_value(new_client, LM85_REG_VID);
1230 if (!(kind == adt7463 && (data->vid & 0x80)))
1231 if ((err = sysfs_create_group(&new_client->dev.kobj,
1235 /* The EMC6D100 has 3 additional voltage inputs */
1236 if (kind == emc6d100)
1237 if ((err = sysfs_create_group(&new_client->dev.kobj,
1238 &lm85_group_in567)))
1241 data->hwmon_dev = hwmon_device_register(&new_client->dev);
1242 if (IS_ERR(data->hwmon_dev)) {
1243 err = PTR_ERR(data->hwmon_dev);
1249 /* Error out and cleanup code */
1251 sysfs_remove_group(&new_client->dev.kobj, &lm85_group);
1252 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in4);
1253 if (kind == emc6d100)
1254 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in567);
1256 i2c_detach_client(new_client);
1263 static int lm85_detach_client(struct i2c_client *client)
1265 struct lm85_data *data = i2c_get_clientdata(client);
1266 hwmon_device_unregister(data->hwmon_dev);
1267 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1268 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1269 if (data->type == emc6d100)
1270 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1271 i2c_detach_client(client);
1277 static int lm85_read_value(struct i2c_client *client, u8 reg)
1281 /* What size location is it? */
1283 case LM85_REG_FAN(0) : /* Read WORD data */
1284 case LM85_REG_FAN(1) :
1285 case LM85_REG_FAN(2) :
1286 case LM85_REG_FAN(3) :
1287 case LM85_REG_FAN_MIN(0) :
1288 case LM85_REG_FAN_MIN(1) :
1289 case LM85_REG_FAN_MIN(2) :
1290 case LM85_REG_FAN_MIN(3) :
1291 case LM85_REG_ALARM1 : /* Read both bytes at once */
1292 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1293 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1295 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1296 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1297 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1299 default: /* Read BYTE data */
1300 res = i2c_smbus_read_byte_data(client, reg);
1307 static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1312 case LM85_REG_FAN(0) : /* Write WORD data */
1313 case LM85_REG_FAN(1) :
1314 case LM85_REG_FAN(2) :
1315 case LM85_REG_FAN(3) :
1316 case LM85_REG_FAN_MIN(0) :
1317 case LM85_REG_FAN_MIN(1) :
1318 case LM85_REG_FAN_MIN(2) :
1319 case LM85_REG_FAN_MIN(3) :
1320 /* NOTE: ALARM is read only, so not included here */
1321 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1322 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1324 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1325 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1326 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1328 default: /* Write BYTE data */
1329 res = i2c_smbus_write_byte_data(client, reg, value);
1336 static void lm85_init_client(struct i2c_client *client)
1339 struct lm85_data *data = i2c_get_clientdata(client);
1341 dev_dbg(&client->dev, "Initializing device\n");
1343 /* Warn if part was not "READY" */
1344 value = lm85_read_value(client, LM85_REG_CONFIG);
1345 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1346 if( value & 0x02 ) {
1347 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1348 i2c_adapter_id(client->adapter), client->addr );
1350 if( ! (value & 0x04) ) {
1351 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1352 i2c_adapter_id(client->adapter), client->addr );
1355 && ( data->type == adm1027
1356 || data->type == adt7463 ) ) {
1357 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1358 "Please report this to the lm85 maintainer.\n",
1359 i2c_adapter_id(client->adapter), client->addr );
1362 /* WE INTENTIONALLY make no changes to the limits,
1363 * offsets, pwms, fans and zones. If they were
1364 * configured, we don't want to mess with them.
1365 * If they weren't, the default is 100% PWM, no
1366 * control and will suffice until 'sensors -s'
1367 * can be run by the user.
1370 /* Start monitoring */
1371 value = lm85_read_value(client, LM85_REG_CONFIG);
1372 /* Try to clear LOCK, Set START, save everything else */
1373 value = (value & ~ 0x02) | 0x01 ;
1374 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1375 lm85_write_value(client, LM85_REG_CONFIG, value);
1378 static struct lm85_data *lm85_update_device(struct device *dev)
1380 struct i2c_client *client = to_i2c_client(dev);
1381 struct lm85_data *data = i2c_get_clientdata(client);
1384 mutex_lock(&data->update_lock);
1386 if ( !data->valid ||
1387 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1388 /* Things that change quickly */
1389 dev_dbg(&client->dev, "Reading sensor values\n");
1391 /* Have to read extended bits first to "freeze" the
1392 * more significant bits that are read later.
1393 * There are 2 additional resolution bits per channel and we
1394 * have room for 4, so we shift them to the left.
1396 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1397 int ext1 = lm85_read_value(client,
1398 ADM1027_REG_EXTEND_ADC1);
1399 int ext2 = lm85_read_value(client,
1400 ADM1027_REG_EXTEND_ADC2);
1401 int val = (ext1 << 8) + ext2;
1403 for(i = 0; i <= 4; i++)
1404 data->in_ext[i] = ((val>>(i * 2))&0x03) << 2;
1406 for(i = 0; i <= 2; i++)
1407 data->temp_ext[i] = (val>>((i + 4) * 2))&0x0c;
1410 data->vid = lm85_read_value(client, LM85_REG_VID);
1412 for (i = 0; i <= 3; ++i) {
1414 lm85_read_value(client, LM85_REG_IN(i));
1417 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1418 data->in[4] = lm85_read_value(client,
1422 for (i = 0; i <= 3; ++i) {
1424 lm85_read_value(client, LM85_REG_FAN(i));
1427 for (i = 0; i <= 2; ++i) {
1429 lm85_read_value(client, LM85_REG_TEMP(i));
1432 for (i = 0; i <= 2; ++i) {
1434 lm85_read_value(client, LM85_REG_PWM(i));
1437 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1439 if ( data->type == adt7463 ) {
1440 if( data->therm_total < ULONG_MAX - 256 ) {
1441 data->therm_total +=
1442 lm85_read_value(client, ADT7463_REG_THERM );
1444 } else if ( data->type == emc6d100 ) {
1445 /* Three more voltage sensors */
1446 for (i = 5; i <= 7; ++i) {
1448 lm85_read_value(client, EMC6D100_REG_IN(i));
1450 /* More alarm bits */
1452 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1453 } else if (data->type == emc6d102 ) {
1454 /* Have to read LSB bits after the MSB ones because
1455 the reading of the MSB bits has frozen the
1456 LSBs (backward from the ADM1027).
1458 int ext1 = lm85_read_value(client,
1459 EMC6D102_REG_EXTEND_ADC1);
1460 int ext2 = lm85_read_value(client,
1461 EMC6D102_REG_EXTEND_ADC2);
1462 int ext3 = lm85_read_value(client,
1463 EMC6D102_REG_EXTEND_ADC3);
1464 int ext4 = lm85_read_value(client,
1465 EMC6D102_REG_EXTEND_ADC4);
1466 data->in_ext[0] = ext3 & 0x0f;
1467 data->in_ext[1] = ext4 & 0x0f;
1468 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1469 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1470 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1472 data->temp_ext[0] = ext1 & 0x0f;
1473 data->temp_ext[1] = ext2 & 0x0f;
1474 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1477 data->last_reading = jiffies ;
1478 }; /* last_reading */
1480 if ( !data->valid ||
1481 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1482 /* Things that don't change often */
1483 dev_dbg(&client->dev, "Reading config values\n");
1485 for (i = 0; i <= 3; ++i) {
1487 lm85_read_value(client, LM85_REG_IN_MIN(i));
1489 lm85_read_value(client, LM85_REG_IN_MAX(i));
1492 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1493 data->in_min[4] = lm85_read_value(client,
1494 LM85_REG_IN_MIN(4));
1495 data->in_max[4] = lm85_read_value(client,
1496 LM85_REG_IN_MAX(4));
1499 if ( data->type == emc6d100 ) {
1500 for (i = 5; i <= 7; ++i) {
1502 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1504 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1508 for (i = 0; i <= 3; ++i) {
1510 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1513 for (i = 0; i <= 2; ++i) {
1515 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1517 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1520 for (i = 0; i <= 2; ++i) {
1522 data->autofan[i].config =
1523 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1524 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1525 data->autofan[i].freq = val & 0x07 ;
1526 data->zone[i].range = (val >> 4) & 0x0f ;
1527 data->autofan[i].min_pwm =
1528 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1529 data->zone[i].limit =
1530 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1531 data->zone[i].critical =
1532 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1535 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1536 data->smooth[0] = i & 0x0f ;
1537 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1538 data->autofan[0].min_off = (i & 0x20) != 0 ;
1539 data->autofan[1].min_off = (i & 0x40) != 0 ;
1540 data->autofan[2].min_off = (i & 0x80) != 0 ;
1541 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1542 data->smooth[1] = (i>>4) & 0x0f ;
1543 data->smooth[2] = i & 0x0f ;
1545 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1546 data->zone[0].hyst = (i>>4) & 0x0f ;
1547 data->zone[1].hyst = i & 0x0f ;
1549 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1550 data->zone[2].hyst = (i>>4) & 0x0f ;
1552 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1553 data->tach_mode = lm85_read_value(client,
1554 LM85_REG_TACH_MODE );
1555 data->spinup_ctl = lm85_read_value(client,
1556 LM85_REG_SPINUP_CTL );
1557 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1558 if ( data->type == adt7463 ) {
1559 for (i = 0; i <= 2; ++i) {
1560 data->oppoint[i] = lm85_read_value(client,
1561 ADT7463_REG_OPPOINT(i) );
1563 data->tmin_ctl = lm85_read_value(client,
1564 ADT7463_REG_TMIN_CTL1 );
1565 data->therm_limit = lm85_read_value(client,
1566 ADT7463_REG_THERM_LIMIT );
1568 for (i = 0; i <= 2; ++i) {
1569 data->temp_offset[i] = lm85_read_value(client,
1570 ADM1027_REG_TEMP_OFFSET(i) );
1572 data->tach_mode = lm85_read_value(client,
1573 ADM1027_REG_CONFIG3 );
1574 data->fan_ppr = lm85_read_value(client,
1575 ADM1027_REG_FAN_PPR );
1578 data->last_config = jiffies;
1579 }; /* last_config */
1583 mutex_unlock(&data->update_lock);
1589 static int __init sm_lm85_init(void)
1591 return i2c_add_driver(&lm85_driver);
1594 static void __exit sm_lm85_exit(void)
1596 i2c_del_driver(&lm85_driver);
1599 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1600 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1601 * post 2.7.0 CVS changes.
1603 MODULE_LICENSE("GPL");
1604 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1605 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1607 module_init(sm_lm85_init);
1608 module_exit(sm_lm85_exit);