PCI: make no_pci_devices() use the pci_bus_type list
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / hwmon / lm85.c
blob182fe6a5605f9f7c64954f21c6ec3ecf88cb1aa7
1 /*
2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
9 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/hwmon.h>
32 #include <linux/hwmon-vid.h>
33 #include <linux/hwmon-sysfs.h>
34 #include <linux/err.h>
35 #include <linux/mutex.h>
37 /* Addresses to scan */
38 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
40 /* Insmod parameters */
41 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102);
43 /* The LM85 registers */
45 #define LM85_REG_IN(nr) (0x20 + (nr))
46 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
47 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
49 #define LM85_REG_TEMP(nr) (0x25 + (nr))
50 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
51 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
53 /* Fan speeds are LSB, MSB (2 bytes) */
54 #define LM85_REG_FAN(nr) (0x28 + (nr) *2)
55 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2)
57 #define LM85_REG_PWM(nr) (0x30 + (nr))
59 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr))
61 #define ADT7463_REG_TMIN_CTL1 0x36
62 #define ADT7463_REG_TMIN_CTL2 0x37
64 #define LM85_REG_DEVICE 0x3d
65 #define LM85_REG_COMPANY 0x3e
66 #define LM85_REG_VERSTEP 0x3f
67 /* These are the recognized values for the above regs */
68 #define LM85_DEVICE_ADX 0x27
69 #define LM85_COMPANY_NATIONAL 0x01
70 #define LM85_COMPANY_ANALOG_DEV 0x41
71 #define LM85_COMPANY_SMSC 0x5c
72 #define LM85_VERSTEP_VMASK 0xf0
73 #define LM85_VERSTEP_GENERIC 0x60
74 #define LM85_VERSTEP_LM85C 0x60
75 #define LM85_VERSTEP_LM85B 0x62
76 #define LM85_VERSTEP_ADM1027 0x60
77 #define LM85_VERSTEP_ADT7463 0x62
78 #define LM85_VERSTEP_ADT7463C 0x6A
79 #define LM85_VERSTEP_EMC6D100_A0 0x60
80 #define LM85_VERSTEP_EMC6D100_A1 0x61
81 #define LM85_VERSTEP_EMC6D102 0x65
83 #define LM85_REG_CONFIG 0x40
85 #define LM85_REG_ALARM1 0x41
86 #define LM85_REG_ALARM2 0x42
88 #define LM85_REG_VID 0x43
90 /* Automated FAN control */
91 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
92 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
93 #define LM85_REG_AFAN_SPIKE1 0x62
94 #define LM85_REG_AFAN_SPIKE2 0x63
95 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
96 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
97 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
98 #define LM85_REG_AFAN_HYST1 0x6d
99 #define LM85_REG_AFAN_HYST2 0x6e
101 #define LM85_REG_TACH_MODE 0x74
102 #define LM85_REG_SPINUP_CTL 0x75
104 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr))
105 #define ADM1027_REG_CONFIG2 0x73
106 #define ADM1027_REG_INTMASK1 0x74
107 #define ADM1027_REG_INTMASK2 0x75
108 #define ADM1027_REG_EXTEND_ADC1 0x76
109 #define ADM1027_REG_EXTEND_ADC2 0x77
110 #define ADM1027_REG_CONFIG3 0x78
111 #define ADM1027_REG_FAN_PPR 0x7b
113 #define ADT7463_REG_THERM 0x79
114 #define ADT7463_REG_THERM_LIMIT 0x7A
116 #define EMC6D100_REG_ALARM3 0x7d
117 /* IN5, IN6 and IN7 */
118 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5))
119 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2)
120 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2)
121 #define EMC6D102_REG_EXTEND_ADC1 0x85
122 #define EMC6D102_REG_EXTEND_ADC2 0x86
123 #define EMC6D102_REG_EXTEND_ADC3 0x87
124 #define EMC6D102_REG_EXTEND_ADC4 0x88
127 /* Conversions. Rounding and limit checking is only done on the TO_REG
128 variants. Note that you should be a bit careful with which arguments
129 these macros are called: arguments may be evaluated more than once.
132 /* IN are scaled acording to built-in resistors */
133 static int lm85_scaling[] = { /* .001 Volts */
134 2500, 2250, 3300, 5000, 12000,
135 3300, 1500, 1800 /*EMC6D100*/
137 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from))
139 #define INS_TO_REG(n,val) \
140 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255)
142 #define INSEXT_FROM_REG(n,val,ext) \
143 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
145 #define INS_FROM_REG(n,val) SCALE((val), 192, lm85_scaling[n])
147 /* FAN speed is measured using 90kHz clock */
148 static inline u16 FAN_TO_REG(unsigned long val)
150 if (!val)
151 return 0xffff;
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 )
193 int i;
195 if ( range < lm85_range_map[0] ) {
196 return 0 ;
197 } else if ( range > lm85_range_map[15] ) {
198 return 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])) {
204 i++;
205 break;
207 break;
211 return( i & 0x0f );
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 )
226 int i;
228 if( freq >= lm85_freq_map[7] ) { return 7 ; }
229 for( i = 0 ; i < 7 ; ++i )
230 if( freq <= lm85_freq_map[i] )
231 break ;
232 return( i & 0x07 );
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 )
253 int i;
255 for( i = 0 ; i <= 7 ; ++i )
256 if( zone == lm85_zone_map[i] )
257 break ;
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
293 struct lm85_zone {
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
300 * values change.
302 u8 max_desired; /* Actual "max" temperature specified. Preserved
303 * to prevent "drift" as other autofan control
304 * values change.
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. */
317 struct lm85_data {
318 struct i2c_client client;
319 struct device *hwmon_dev;
320 enum chips type;
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,
357 int kind);
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 = {
367 .driver = {
368 .name = "lm85",
370 .attach_adapter = lm85_attach_adapter,
371 .detach_client = lm85_detach_client,
375 /* 4 Fans */
376 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
377 char *buf)
379 int nr = to_sensor_dev_attr(attr)->index;
380 struct lm85_data *data = lm85_update_device(dev);
381 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) );
384 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
385 char *buf)
387 int nr = to_sensor_dev_attr(attr)->index;
388 struct lm85_data *data = lm85_update_device(dev);
389 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) );
392 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
393 const char *buf, size_t count)
395 int nr = to_sensor_dev_attr(attr)->index;
396 struct i2c_client *client = to_i2c_client(dev);
397 struct lm85_data *data = i2c_get_clientdata(client);
398 unsigned long val = simple_strtoul(buf, NULL, 10);
400 mutex_lock(&data->update_lock);
401 data->fan_min[nr] = FAN_TO_REG(val);
402 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
403 mutex_unlock(&data->update_lock);
404 return count;
407 #define show_fan_offset(offset) \
408 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
409 show_fan, NULL, offset - 1); \
410 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
411 show_fan_min, set_fan_min, offset - 1)
413 show_fan_offset(1);
414 show_fan_offset(2);
415 show_fan_offset(3);
416 show_fan_offset(4);
418 /* vid, vrm, alarms */
420 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
422 struct lm85_data *data = lm85_update_device(dev);
423 int vid;
425 if (data->type == adt7463 && (data->vid & 0x80)) {
426 /* 6-pin VID (VRM 10) */
427 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
428 } else {
429 /* 5-pin VID (VRM 9) */
430 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
433 return sprintf(buf, "%d\n", vid);
436 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
438 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
440 struct lm85_data *data = dev_get_drvdata(dev);
441 return sprintf(buf, "%ld\n", (long) data->vrm);
444 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
446 struct lm85_data *data = dev_get_drvdata(dev);
447 data->vrm = simple_strtoul(buf, NULL, 10);
448 return count;
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,
462 char *buf)
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);
487 /* pwm */
489 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
490 char *buf)
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);
509 return count;
512 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
513 *attr, char *buf)
515 int nr = to_sensor_dev_attr(attr)->index;
516 struct lm85_data *data = lm85_update_device(dev);
517 int pwm_zone, enable;
519 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
520 switch (pwm_zone) {
521 case -1: /* PWM is always at 100% */
522 enable = 0;
523 break;
524 case 0: /* PWM is always at 0% */
525 case -2: /* PWM responds to manual control */
526 enable = 1;
527 break;
528 default: /* PWM in automatic mode */
529 enable = 2;
531 return sprintf(buf, "%d\n", enable);
534 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
535 *attr, const char *buf, size_t count)
537 int nr = to_sensor_dev_attr(attr)->index;
538 struct i2c_client *client = to_i2c_client(dev);
539 struct lm85_data *data = i2c_get_clientdata(client);
540 long val = simple_strtol(buf, NULL, 10);
541 u8 config;
543 switch (val) {
544 case 0:
545 config = 3;
546 break;
547 case 1:
548 config = 7;
549 break;
550 case 2:
551 /* Here we have to choose arbitrarily one of the 5 possible
552 configurations; I go for the safest */
553 config = 6;
554 break;
555 default:
556 return -EINVAL;
559 mutex_lock(&data->update_lock);
560 data->autofan[nr].config = lm85_read_value(client,
561 LM85_REG_AFAN_CONFIG(nr));
562 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
563 | (config << 5);
564 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
565 data->autofan[nr].config);
566 mutex_unlock(&data->update_lock);
567 return count;
570 #define show_pwm_reg(offset) \
571 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
572 show_pwm, set_pwm, offset - 1); \
573 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
574 show_pwm_enable, set_pwm_enable, offset - 1)
576 show_pwm_reg(1);
577 show_pwm_reg(2);
578 show_pwm_reg(3);
580 /* Voltages */
582 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
583 char *buf)
585 int nr = to_sensor_dev_attr(attr)->index;
586 struct lm85_data *data = lm85_update_device(dev);
587 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr,
588 data->in[nr],
589 data->in_ext[nr]));
592 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
593 char *buf)
595 int nr = to_sensor_dev_attr(attr)->index;
596 struct lm85_data *data = lm85_update_device(dev);
597 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) );
600 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
601 const char *buf, size_t count)
603 int nr = to_sensor_dev_attr(attr)->index;
604 struct i2c_client *client = to_i2c_client(dev);
605 struct lm85_data *data = i2c_get_clientdata(client);
606 long val = simple_strtol(buf, NULL, 10);
608 mutex_lock(&data->update_lock);
609 data->in_min[nr] = INS_TO_REG(nr, val);
610 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
611 mutex_unlock(&data->update_lock);
612 return count;
615 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
616 char *buf)
618 int nr = to_sensor_dev_attr(attr)->index;
619 struct lm85_data *data = lm85_update_device(dev);
620 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) );
623 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
624 const char *buf, size_t count)
626 int nr = to_sensor_dev_attr(attr)->index;
627 struct i2c_client *client = to_i2c_client(dev);
628 struct lm85_data *data = i2c_get_clientdata(client);
629 long val = simple_strtol(buf, NULL, 10);
631 mutex_lock(&data->update_lock);
632 data->in_max[nr] = INS_TO_REG(nr, val);
633 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
634 mutex_unlock(&data->update_lock);
635 return count;
638 #define show_in_reg(offset) \
639 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
640 show_in, NULL, offset); \
641 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
642 show_in_min, set_in_min, offset); \
643 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
644 show_in_max, set_in_max, offset)
646 show_in_reg(0);
647 show_in_reg(1);
648 show_in_reg(2);
649 show_in_reg(3);
650 show_in_reg(4);
651 show_in_reg(5);
652 show_in_reg(6);
653 show_in_reg(7);
655 /* Temps */
657 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
658 char *buf)
660 int nr = to_sensor_dev_attr(attr)->index;
661 struct lm85_data *data = lm85_update_device(dev);
662 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr],
663 data->temp_ext[nr]));
666 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
667 char *buf)
669 int nr = to_sensor_dev_attr(attr)->index;
670 struct lm85_data *data = lm85_update_device(dev);
671 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) );
674 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
675 const char *buf, size_t count)
677 int nr = to_sensor_dev_attr(attr)->index;
678 struct i2c_client *client = to_i2c_client(dev);
679 struct lm85_data *data = i2c_get_clientdata(client);
680 long val = simple_strtol(buf, NULL, 10);
682 mutex_lock(&data->update_lock);
683 data->temp_min[nr] = TEMP_TO_REG(val);
684 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
685 mutex_unlock(&data->update_lock);
686 return count;
689 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
690 char *buf)
692 int nr = to_sensor_dev_attr(attr)->index;
693 struct lm85_data *data = lm85_update_device(dev);
694 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) );
697 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
698 const char *buf, size_t count)
700 int nr = to_sensor_dev_attr(attr)->index;
701 struct i2c_client *client = to_i2c_client(dev);
702 struct lm85_data *data = i2c_get_clientdata(client);
703 long val = simple_strtol(buf, NULL, 10);
705 mutex_lock(&data->update_lock);
706 data->temp_max[nr] = TEMP_TO_REG(val);
707 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
708 mutex_unlock(&data->update_lock);
709 return count;
712 #define show_temp_reg(offset) \
713 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
714 show_temp, NULL, offset - 1); \
715 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
716 show_temp_min, set_temp_min, offset - 1); \
717 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
718 show_temp_max, set_temp_max, offset - 1);
720 show_temp_reg(1);
721 show_temp_reg(2);
722 show_temp_reg(3);
725 /* Automatic PWM control */
727 static ssize_t show_pwm_auto_channels(struct device *dev,
728 struct device_attribute *attr, char *buf)
730 int nr = to_sensor_dev_attr(attr)->index;
731 struct lm85_data *data = lm85_update_device(dev);
732 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config));
735 static ssize_t set_pwm_auto_channels(struct device *dev,
736 struct device_attribute *attr, const char *buf, size_t count)
738 int nr = to_sensor_dev_attr(attr)->index;
739 struct i2c_client *client = to_i2c_client(dev);
740 struct lm85_data *data = i2c_get_clientdata(client);
741 long val = simple_strtol(buf, NULL, 10);
743 mutex_lock(&data->update_lock);
744 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
745 | ZONE_TO_REG(val) ;
746 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
747 data->autofan[nr].config);
748 mutex_unlock(&data->update_lock);
749 return count;
752 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
753 struct device_attribute *attr, char *buf)
755 int nr = to_sensor_dev_attr(attr)->index;
756 struct lm85_data *data = lm85_update_device(dev);
757 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
760 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
761 struct device_attribute *attr, const char *buf, size_t count)
763 int nr = to_sensor_dev_attr(attr)->index;
764 struct i2c_client *client = to_i2c_client(dev);
765 struct lm85_data *data = i2c_get_clientdata(client);
766 long val = simple_strtol(buf, NULL, 10);
768 mutex_lock(&data->update_lock);
769 data->autofan[nr].min_pwm = PWM_TO_REG(val);
770 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
771 data->autofan[nr].min_pwm);
772 mutex_unlock(&data->update_lock);
773 return count;
776 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
777 struct device_attribute *attr, char *buf)
779 int nr = to_sensor_dev_attr(attr)->index;
780 struct lm85_data *data = lm85_update_device(dev);
781 return sprintf(buf,"%d\n", data->autofan[nr].min_off);
784 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
785 struct device_attribute *attr, const char *buf, size_t count)
787 int nr = to_sensor_dev_attr(attr)->index;
788 struct i2c_client *client = to_i2c_client(dev);
789 struct lm85_data *data = i2c_get_clientdata(client);
790 long val = simple_strtol(buf, NULL, 10);
792 mutex_lock(&data->update_lock);
793 data->autofan[nr].min_off = val;
794 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
795 | data->syncpwm3
796 | (data->autofan[0].min_off ? 0x20 : 0)
797 | (data->autofan[1].min_off ? 0x40 : 0)
798 | (data->autofan[2].min_off ? 0x80 : 0)
800 mutex_unlock(&data->update_lock);
801 return count;
804 static ssize_t show_pwm_auto_pwm_freq(struct device *dev,
805 struct device_attribute *attr, char *buf)
807 int nr = to_sensor_dev_attr(attr)->index;
808 struct lm85_data *data = lm85_update_device(dev);
809 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
812 static ssize_t set_pwm_auto_pwm_freq(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);
818 long val = simple_strtol(buf, NULL, 10);
820 mutex_lock(&data->update_lock);
821 data->autofan[nr].freq = FREQ_TO_REG(val);
822 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
823 (data->zone[nr].range << 4)
824 | data->autofan[nr].freq
826 mutex_unlock(&data->update_lock);
827 return count;
830 #define pwm_auto(offset) \
831 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
832 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
833 set_pwm_auto_channels, offset - 1); \
834 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
835 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
836 set_pwm_auto_pwm_min, offset - 1); \
837 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
838 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
839 set_pwm_auto_pwm_minctl, offset - 1); \
840 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
841 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
842 set_pwm_auto_pwm_freq, offset - 1);
844 pwm_auto(1);
845 pwm_auto(2);
846 pwm_auto(3);
848 /* Temperature settings for automatic PWM control */
850 static ssize_t show_temp_auto_temp_off(struct device *dev,
851 struct device_attribute *attr, char *buf)
853 int nr = to_sensor_dev_attr(attr)->index;
854 struct lm85_data *data = lm85_update_device(dev);
855 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
856 HYST_FROM_REG(data->zone[nr].hyst));
859 static ssize_t set_temp_auto_temp_off(struct device *dev,
860 struct device_attribute *attr, const char *buf, size_t count)
862 int nr = to_sensor_dev_attr(attr)->index;
863 struct i2c_client *client = to_i2c_client(dev);
864 struct lm85_data *data = i2c_get_clientdata(client);
865 int min;
866 long val = simple_strtol(buf, NULL, 10);
868 mutex_lock(&data->update_lock);
869 min = TEMP_FROM_REG(data->zone[nr].limit);
870 data->zone[nr].off_desired = TEMP_TO_REG(val);
871 data->zone[nr].hyst = HYST_TO_REG(min - val);
872 if ( nr == 0 || nr == 1 ) {
873 lm85_write_value(client, LM85_REG_AFAN_HYST1,
874 (data->zone[0].hyst << 4)
875 | data->zone[1].hyst
877 } else {
878 lm85_write_value(client, LM85_REG_AFAN_HYST2,
879 (data->zone[2].hyst << 4)
882 mutex_unlock(&data->update_lock);
883 return count;
886 static ssize_t show_temp_auto_temp_min(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) );
894 static ssize_t set_temp_auto_temp_min(struct device *dev,
895 struct device_attribute *attr, const char *buf, size_t count)
897 int nr = to_sensor_dev_attr(attr)->index;
898 struct i2c_client *client = to_i2c_client(dev);
899 struct lm85_data *data = i2c_get_clientdata(client);
900 long val = simple_strtol(buf, NULL, 10);
902 mutex_lock(&data->update_lock);
903 data->zone[nr].limit = TEMP_TO_REG(val);
904 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
905 data->zone[nr].limit);
907 /* Update temp_auto_max and temp_auto_range */
908 data->zone[nr].range = RANGE_TO_REG(
909 TEMP_FROM_REG(data->zone[nr].max_desired) -
910 TEMP_FROM_REG(data->zone[nr].limit));
911 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
912 ((data->zone[nr].range & 0x0f) << 4)
913 | (data->autofan[nr].freq & 0x07));
915 /* Update temp_auto_hyst and temp_auto_off */
916 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
917 data->zone[nr].limit) - TEMP_FROM_REG(
918 data->zone[nr].off_desired));
919 if ( nr == 0 || nr == 1 ) {
920 lm85_write_value(client, LM85_REG_AFAN_HYST1,
921 (data->zone[0].hyst << 4)
922 | data->zone[1].hyst
924 } else {
925 lm85_write_value(client, LM85_REG_AFAN_HYST2,
926 (data->zone[2].hyst << 4)
929 mutex_unlock(&data->update_lock);
930 return count;
933 static ssize_t show_temp_auto_temp_max(struct device *dev,
934 struct device_attribute *attr, char *buf)
936 int nr = to_sensor_dev_attr(attr)->index;
937 struct lm85_data *data = lm85_update_device(dev);
938 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
939 RANGE_FROM_REG(data->zone[nr].range));
942 static ssize_t set_temp_auto_temp_max(struct device *dev,
943 struct device_attribute *attr, const char *buf, size_t count)
945 int nr = to_sensor_dev_attr(attr)->index;
946 struct i2c_client *client = to_i2c_client(dev);
947 struct lm85_data *data = i2c_get_clientdata(client);
948 int min;
949 long val = simple_strtol(buf, NULL, 10);
951 mutex_lock(&data->update_lock);
952 min = TEMP_FROM_REG(data->zone[nr].limit);
953 data->zone[nr].max_desired = TEMP_TO_REG(val);
954 data->zone[nr].range = RANGE_TO_REG(
955 val - min);
956 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
957 ((data->zone[nr].range & 0x0f) << 4)
958 | (data->autofan[nr].freq & 0x07));
959 mutex_unlock(&data->update_lock);
960 return count;
963 static ssize_t show_temp_auto_temp_crit(struct device *dev,
964 struct device_attribute *attr, char *buf)
966 int nr = to_sensor_dev_attr(attr)->index;
967 struct lm85_data *data = lm85_update_device(dev);
968 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical));
971 static ssize_t set_temp_auto_temp_crit(struct device *dev,
972 struct device_attribute *attr,const char *buf, size_t count)
974 int nr = to_sensor_dev_attr(attr)->index;
975 struct i2c_client *client = to_i2c_client(dev);
976 struct lm85_data *data = i2c_get_clientdata(client);
977 long val = simple_strtol(buf, NULL, 10);
979 mutex_lock(&data->update_lock);
980 data->zone[nr].critical = TEMP_TO_REG(val);
981 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
982 data->zone[nr].critical);
983 mutex_unlock(&data->update_lock);
984 return count;
987 #define temp_auto(offset) \
988 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
989 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
990 set_temp_auto_temp_off, offset - 1); \
991 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
992 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
993 set_temp_auto_temp_min, offset - 1); \
994 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
995 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
996 set_temp_auto_temp_max, offset - 1); \
997 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
998 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
999 set_temp_auto_temp_crit, offset - 1);
1001 temp_auto(1);
1002 temp_auto(2);
1003 temp_auto(3);
1005 static int lm85_attach_adapter(struct i2c_adapter *adapter)
1007 if (!(adapter->class & I2C_CLASS_HWMON))
1008 return 0;
1009 return i2c_probe(adapter, &addr_data, lm85_detect);
1012 static struct attribute *lm85_attributes[] = {
1013 &sensor_dev_attr_fan1_input.dev_attr.attr,
1014 &sensor_dev_attr_fan2_input.dev_attr.attr,
1015 &sensor_dev_attr_fan3_input.dev_attr.attr,
1016 &sensor_dev_attr_fan4_input.dev_attr.attr,
1017 &sensor_dev_attr_fan1_min.dev_attr.attr,
1018 &sensor_dev_attr_fan2_min.dev_attr.attr,
1019 &sensor_dev_attr_fan3_min.dev_attr.attr,
1020 &sensor_dev_attr_fan4_min.dev_attr.attr,
1021 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1022 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1023 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1024 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1026 &sensor_dev_attr_pwm1.dev_attr.attr,
1027 &sensor_dev_attr_pwm2.dev_attr.attr,
1028 &sensor_dev_attr_pwm3.dev_attr.attr,
1029 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1030 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1031 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1033 &sensor_dev_attr_in0_input.dev_attr.attr,
1034 &sensor_dev_attr_in1_input.dev_attr.attr,
1035 &sensor_dev_attr_in2_input.dev_attr.attr,
1036 &sensor_dev_attr_in3_input.dev_attr.attr,
1037 &sensor_dev_attr_in0_min.dev_attr.attr,
1038 &sensor_dev_attr_in1_min.dev_attr.attr,
1039 &sensor_dev_attr_in2_min.dev_attr.attr,
1040 &sensor_dev_attr_in3_min.dev_attr.attr,
1041 &sensor_dev_attr_in0_max.dev_attr.attr,
1042 &sensor_dev_attr_in1_max.dev_attr.attr,
1043 &sensor_dev_attr_in2_max.dev_attr.attr,
1044 &sensor_dev_attr_in3_max.dev_attr.attr,
1045 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1046 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1047 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1048 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1050 &sensor_dev_attr_temp1_input.dev_attr.attr,
1051 &sensor_dev_attr_temp2_input.dev_attr.attr,
1052 &sensor_dev_attr_temp3_input.dev_attr.attr,
1053 &sensor_dev_attr_temp1_min.dev_attr.attr,
1054 &sensor_dev_attr_temp2_min.dev_attr.attr,
1055 &sensor_dev_attr_temp3_min.dev_attr.attr,
1056 &sensor_dev_attr_temp1_max.dev_attr.attr,
1057 &sensor_dev_attr_temp2_max.dev_attr.attr,
1058 &sensor_dev_attr_temp3_max.dev_attr.attr,
1059 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1060 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1061 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1062 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1063 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1065 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1066 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1067 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1068 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1069 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1070 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1071 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1072 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1073 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1074 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr,
1075 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr,
1076 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr,
1078 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1079 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1080 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1081 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1082 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1083 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1084 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1085 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1086 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1087 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1088 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1089 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1091 &dev_attr_vrm.attr,
1092 &dev_attr_cpu0_vid.attr,
1093 &dev_attr_alarms.attr,
1094 NULL
1097 static const struct attribute_group lm85_group = {
1098 .attrs = lm85_attributes,
1101 static struct attribute *lm85_attributes_in4[] = {
1102 &sensor_dev_attr_in4_input.dev_attr.attr,
1103 &sensor_dev_attr_in4_min.dev_attr.attr,
1104 &sensor_dev_attr_in4_max.dev_attr.attr,
1105 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1106 NULL
1109 static const struct attribute_group lm85_group_in4 = {
1110 .attrs = lm85_attributes_in4,
1113 static struct attribute *lm85_attributes_in567[] = {
1114 &sensor_dev_attr_in5_input.dev_attr.attr,
1115 &sensor_dev_attr_in6_input.dev_attr.attr,
1116 &sensor_dev_attr_in7_input.dev_attr.attr,
1117 &sensor_dev_attr_in5_min.dev_attr.attr,
1118 &sensor_dev_attr_in6_min.dev_attr.attr,
1119 &sensor_dev_attr_in7_min.dev_attr.attr,
1120 &sensor_dev_attr_in5_max.dev_attr.attr,
1121 &sensor_dev_attr_in6_max.dev_attr.attr,
1122 &sensor_dev_attr_in7_max.dev_attr.attr,
1123 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1124 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1125 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1126 NULL
1129 static const struct attribute_group lm85_group_in567 = {
1130 .attrs = lm85_attributes_in567,
1133 static int lm85_detect(struct i2c_adapter *adapter, int address,
1134 int kind)
1136 int company, verstep ;
1137 struct i2c_client *new_client = NULL;
1138 struct lm85_data *data;
1139 int err = 0;
1140 const char *type_name = "";
1142 if (!i2c_check_functionality(adapter,
1143 I2C_FUNC_SMBUS_BYTE_DATA)) {
1144 /* We need to be able to do byte I/O */
1145 goto ERROR0 ;
1148 /* OK. For now, we presume we have a valid client. We now create the
1149 client structure, even though we cannot fill it completely yet.
1150 But it allows us to access lm85_{read,write}_value. */
1152 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1153 err = -ENOMEM;
1154 goto ERROR0;
1157 new_client = &data->client;
1158 i2c_set_clientdata(new_client, data);
1159 new_client->addr = address;
1160 new_client->adapter = adapter;
1161 new_client->driver = &lm85_driver;
1162 new_client->flags = 0;
1164 /* Now, we do the remaining detection. */
1166 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1167 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1169 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1170 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1171 i2c_adapter_id(new_client->adapter), new_client->addr,
1172 company, verstep);
1174 /* If auto-detecting, Determine the chip type. */
1175 if (kind <= 0) {
1176 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1177 i2c_adapter_id(adapter), address );
1178 if( company == LM85_COMPANY_NATIONAL
1179 && verstep == LM85_VERSTEP_LM85C ) {
1180 kind = lm85c ;
1181 } else if( company == LM85_COMPANY_NATIONAL
1182 && verstep == LM85_VERSTEP_LM85B ) {
1183 kind = lm85b ;
1184 } else if( company == LM85_COMPANY_NATIONAL
1185 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1186 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1187 " Defaulting to LM85.\n", verstep);
1188 kind = any_chip ;
1189 } else if( company == LM85_COMPANY_ANALOG_DEV
1190 && verstep == LM85_VERSTEP_ADM1027 ) {
1191 kind = adm1027 ;
1192 } else if( company == LM85_COMPANY_ANALOG_DEV
1193 && (verstep == LM85_VERSTEP_ADT7463
1194 || verstep == LM85_VERSTEP_ADT7463C) ) {
1195 kind = adt7463 ;
1196 } else if( company == LM85_COMPANY_ANALOG_DEV
1197 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) {
1198 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1199 " Defaulting to Generic LM85.\n", verstep );
1200 kind = any_chip ;
1201 } else if( company == LM85_COMPANY_SMSC
1202 && (verstep == LM85_VERSTEP_EMC6D100_A0
1203 || verstep == LM85_VERSTEP_EMC6D100_A1) ) {
1204 /* Unfortunately, we can't tell a '100 from a '101
1205 * from the registers. Since a '101 is a '100
1206 * in a package with fewer pins and therefore no
1207 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1208 * inputs read 0, then it's a '101.
1210 kind = emc6d100 ;
1211 } else if( company == LM85_COMPANY_SMSC
1212 && verstep == LM85_VERSTEP_EMC6D102) {
1213 kind = emc6d102 ;
1214 } else if( company == LM85_COMPANY_SMSC
1215 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1216 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1217 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1218 " Defaulting to Generic LM85.\n", verstep );
1219 kind = any_chip ;
1220 } else if( kind == any_chip
1221 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1222 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1223 /* Leave kind as "any_chip" */
1224 } else {
1225 dev_dbg(&adapter->dev, "Autodetection failed\n");
1226 /* Not an LM85 ... */
1227 if( kind == any_chip ) { /* User used force=x,y */
1228 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1229 " found at %d,0x%02x. Try force_lm85c.\n",
1230 i2c_adapter_id(adapter), address );
1232 err = 0 ;
1233 goto ERROR1;
1237 /* Fill in the chip specific driver values */
1238 if ( kind == any_chip ) {
1239 type_name = "lm85";
1240 } else if ( kind == lm85b ) {
1241 type_name = "lm85b";
1242 } else if ( kind == lm85c ) {
1243 type_name = "lm85c";
1244 } else if ( kind == adm1027 ) {
1245 type_name = "adm1027";
1246 } else if ( kind == adt7463 ) {
1247 type_name = "adt7463";
1248 } else if ( kind == emc6d100){
1249 type_name = "emc6d100";
1250 } else if ( kind == emc6d102 ) {
1251 type_name = "emc6d102";
1253 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1255 /* Fill in the remaining client fields */
1256 data->type = kind;
1257 data->valid = 0;
1258 mutex_init(&data->update_lock);
1260 /* Tell the I2C layer a new client has arrived */
1261 if ((err = i2c_attach_client(new_client)))
1262 goto ERROR1;
1264 /* Set the VRM version */
1265 data->vrm = vid_which_vrm();
1267 /* Initialize the LM85 chip */
1268 lm85_init_client(new_client);
1270 /* Register sysfs hooks */
1271 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group)))
1272 goto ERROR2;
1274 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1275 as a sixth digital VID input rather than an analog input. */
1276 data->vid = lm85_read_value(new_client, LM85_REG_VID);
1277 if (!(kind == adt7463 && (data->vid & 0x80)))
1278 if ((err = sysfs_create_group(&new_client->dev.kobj,
1279 &lm85_group_in4)))
1280 goto ERROR3;
1282 /* The EMC6D100 has 3 additional voltage inputs */
1283 if (kind == emc6d100)
1284 if ((err = sysfs_create_group(&new_client->dev.kobj,
1285 &lm85_group_in567)))
1286 goto ERROR3;
1288 data->hwmon_dev = hwmon_device_register(&new_client->dev);
1289 if (IS_ERR(data->hwmon_dev)) {
1290 err = PTR_ERR(data->hwmon_dev);
1291 goto ERROR3;
1294 return 0;
1296 /* Error out and cleanup code */
1297 ERROR3:
1298 sysfs_remove_group(&new_client->dev.kobj, &lm85_group);
1299 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in4);
1300 if (kind == emc6d100)
1301 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in567);
1302 ERROR2:
1303 i2c_detach_client(new_client);
1304 ERROR1:
1305 kfree(data);
1306 ERROR0:
1307 return err;
1310 static int lm85_detach_client(struct i2c_client *client)
1312 struct lm85_data *data = i2c_get_clientdata(client);
1313 hwmon_device_unregister(data->hwmon_dev);
1314 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1315 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1316 if (data->type == emc6d100)
1317 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1318 i2c_detach_client(client);
1319 kfree(data);
1320 return 0;
1324 static int lm85_read_value(struct i2c_client *client, u8 reg)
1326 int res;
1328 /* What size location is it? */
1329 switch( reg ) {
1330 case LM85_REG_FAN(0) : /* Read WORD data */
1331 case LM85_REG_FAN(1) :
1332 case LM85_REG_FAN(2) :
1333 case LM85_REG_FAN(3) :
1334 case LM85_REG_FAN_MIN(0) :
1335 case LM85_REG_FAN_MIN(1) :
1336 case LM85_REG_FAN_MIN(2) :
1337 case LM85_REG_FAN_MIN(3) :
1338 case LM85_REG_ALARM1 : /* Read both bytes at once */
1339 res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
1340 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ;
1341 break ;
1342 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */
1343 res = i2c_smbus_read_byte_data(client, reg) << 8 ;
1344 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ;
1345 break ;
1346 default: /* Read BYTE data */
1347 res = i2c_smbus_read_byte_data(client, reg);
1348 break ;
1351 return res ;
1354 static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1356 int res ;
1358 switch( reg ) {
1359 case LM85_REG_FAN(0) : /* Write WORD data */
1360 case LM85_REG_FAN(1) :
1361 case LM85_REG_FAN(2) :
1362 case LM85_REG_FAN(3) :
1363 case LM85_REG_FAN_MIN(0) :
1364 case LM85_REG_FAN_MIN(1) :
1365 case LM85_REG_FAN_MIN(2) :
1366 case LM85_REG_FAN_MIN(3) :
1367 /* NOTE: ALARM is read only, so not included here */
1368 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ;
1369 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ;
1370 break ;
1371 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */
1372 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff);
1373 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ;
1374 break ;
1375 default: /* Write BYTE data */
1376 res = i2c_smbus_write_byte_data(client, reg, value);
1377 break ;
1380 return res ;
1383 static void lm85_init_client(struct i2c_client *client)
1385 int value;
1386 struct lm85_data *data = i2c_get_clientdata(client);
1388 dev_dbg(&client->dev, "Initializing device\n");
1390 /* Warn if part was not "READY" */
1391 value = lm85_read_value(client, LM85_REG_CONFIG);
1392 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1393 if( value & 0x02 ) {
1394 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1395 i2c_adapter_id(client->adapter), client->addr );
1397 if( ! (value & 0x04) ) {
1398 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1399 i2c_adapter_id(client->adapter), client->addr );
1401 if( value & 0x10
1402 && ( data->type == adm1027
1403 || data->type == adt7463 ) ) {
1404 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1405 "Please report this to the lm85 maintainer.\n",
1406 i2c_adapter_id(client->adapter), client->addr );
1409 /* WE INTENTIONALLY make no changes to the limits,
1410 * offsets, pwms, fans and zones. If they were
1411 * configured, we don't want to mess with them.
1412 * If they weren't, the default is 100% PWM, no
1413 * control and will suffice until 'sensors -s'
1414 * can be run by the user.
1417 /* Start monitoring */
1418 value = lm85_read_value(client, LM85_REG_CONFIG);
1419 /* Try to clear LOCK, Set START, save everything else */
1420 value = (value & ~ 0x02) | 0x01 ;
1421 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1422 lm85_write_value(client, LM85_REG_CONFIG, value);
1425 static struct lm85_data *lm85_update_device(struct device *dev)
1427 struct i2c_client *client = to_i2c_client(dev);
1428 struct lm85_data *data = i2c_get_clientdata(client);
1429 int i;
1431 mutex_lock(&data->update_lock);
1433 if ( !data->valid ||
1434 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) {
1435 /* Things that change quickly */
1436 dev_dbg(&client->dev, "Reading sensor values\n");
1438 /* Have to read extended bits first to "freeze" the
1439 * more significant bits that are read later.
1440 * There are 2 additional resolution bits per channel and we
1441 * have room for 4, so we shift them to the left.
1443 if ( (data->type == adm1027) || (data->type == adt7463) ) {
1444 int ext1 = lm85_read_value(client,
1445 ADM1027_REG_EXTEND_ADC1);
1446 int ext2 = lm85_read_value(client,
1447 ADM1027_REG_EXTEND_ADC2);
1448 int val = (ext1 << 8) + ext2;
1450 for(i = 0; i <= 4; i++)
1451 data->in_ext[i] = ((val>>(i * 2))&0x03) << 2;
1453 for(i = 0; i <= 2; i++)
1454 data->temp_ext[i] = (val>>((i + 4) * 2))&0x0c;
1457 data->vid = lm85_read_value(client, LM85_REG_VID);
1459 for (i = 0; i <= 3; ++i) {
1460 data->in[i] =
1461 lm85_read_value(client, LM85_REG_IN(i));
1464 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1465 data->in[4] = lm85_read_value(client,
1466 LM85_REG_IN(4));
1469 for (i = 0; i <= 3; ++i) {
1470 data->fan[i] =
1471 lm85_read_value(client, LM85_REG_FAN(i));
1474 for (i = 0; i <= 2; ++i) {
1475 data->temp[i] =
1476 lm85_read_value(client, LM85_REG_TEMP(i));
1479 for (i = 0; i <= 2; ++i) {
1480 data->pwm[i] =
1481 lm85_read_value(client, LM85_REG_PWM(i));
1484 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1486 if ( data->type == adt7463 ) {
1487 if( data->therm_total < ULONG_MAX - 256 ) {
1488 data->therm_total +=
1489 lm85_read_value(client, ADT7463_REG_THERM );
1491 } else if ( data->type == emc6d100 ) {
1492 /* Three more voltage sensors */
1493 for (i = 5; i <= 7; ++i) {
1494 data->in[i] =
1495 lm85_read_value(client, EMC6D100_REG_IN(i));
1497 /* More alarm bits */
1498 data->alarms |=
1499 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16;
1500 } else if (data->type == emc6d102 ) {
1501 /* Have to read LSB bits after the MSB ones because
1502 the reading of the MSB bits has frozen the
1503 LSBs (backward from the ADM1027).
1505 int ext1 = lm85_read_value(client,
1506 EMC6D102_REG_EXTEND_ADC1);
1507 int ext2 = lm85_read_value(client,
1508 EMC6D102_REG_EXTEND_ADC2);
1509 int ext3 = lm85_read_value(client,
1510 EMC6D102_REG_EXTEND_ADC3);
1511 int ext4 = lm85_read_value(client,
1512 EMC6D102_REG_EXTEND_ADC4);
1513 data->in_ext[0] = ext3 & 0x0f;
1514 data->in_ext[1] = ext4 & 0x0f;
1515 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1516 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1517 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1519 data->temp_ext[0] = ext1 & 0x0f;
1520 data->temp_ext[1] = ext2 & 0x0f;
1521 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1524 data->last_reading = jiffies ;
1525 }; /* last_reading */
1527 if ( !data->valid ||
1528 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) {
1529 /* Things that don't change often */
1530 dev_dbg(&client->dev, "Reading config values\n");
1532 for (i = 0; i <= 3; ++i) {
1533 data->in_min[i] =
1534 lm85_read_value(client, LM85_REG_IN_MIN(i));
1535 data->in_max[i] =
1536 lm85_read_value(client, LM85_REG_IN_MAX(i));
1539 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1540 data->in_min[4] = lm85_read_value(client,
1541 LM85_REG_IN_MIN(4));
1542 data->in_max[4] = lm85_read_value(client,
1543 LM85_REG_IN_MAX(4));
1546 if ( data->type == emc6d100 ) {
1547 for (i = 5; i <= 7; ++i) {
1548 data->in_min[i] =
1549 lm85_read_value(client, EMC6D100_REG_IN_MIN(i));
1550 data->in_max[i] =
1551 lm85_read_value(client, EMC6D100_REG_IN_MAX(i));
1555 for (i = 0; i <= 3; ++i) {
1556 data->fan_min[i] =
1557 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1560 for (i = 0; i <= 2; ++i) {
1561 data->temp_min[i] =
1562 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1563 data->temp_max[i] =
1564 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1567 for (i = 0; i <= 2; ++i) {
1568 int val ;
1569 data->autofan[i].config =
1570 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1571 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1572 data->autofan[i].freq = val & 0x07 ;
1573 data->zone[i].range = (val >> 4) & 0x0f ;
1574 data->autofan[i].min_pwm =
1575 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1576 data->zone[i].limit =
1577 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1578 data->zone[i].critical =
1579 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1582 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1583 data->smooth[0] = i & 0x0f ;
1584 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */
1585 data->autofan[0].min_off = (i & 0x20) != 0 ;
1586 data->autofan[1].min_off = (i & 0x40) != 0 ;
1587 data->autofan[2].min_off = (i & 0x80) != 0 ;
1588 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2);
1589 data->smooth[1] = (i>>4) & 0x0f ;
1590 data->smooth[2] = i & 0x0f ;
1592 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1593 data->zone[0].hyst = (i>>4) & 0x0f ;
1594 data->zone[1].hyst = i & 0x0f ;
1596 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1597 data->zone[2].hyst = (i>>4) & 0x0f ;
1599 if ( (data->type == lm85b) || (data->type == lm85c) ) {
1600 data->tach_mode = lm85_read_value(client,
1601 LM85_REG_TACH_MODE );
1602 data->spinup_ctl = lm85_read_value(client,
1603 LM85_REG_SPINUP_CTL );
1604 } else if ( (data->type == adt7463) || (data->type == adm1027) ) {
1605 if ( data->type == adt7463 ) {
1606 for (i = 0; i <= 2; ++i) {
1607 data->oppoint[i] = lm85_read_value(client,
1608 ADT7463_REG_OPPOINT(i) );
1610 data->tmin_ctl = lm85_read_value(client,
1611 ADT7463_REG_TMIN_CTL1 );
1612 data->therm_limit = lm85_read_value(client,
1613 ADT7463_REG_THERM_LIMIT );
1615 for (i = 0; i <= 2; ++i) {
1616 data->temp_offset[i] = lm85_read_value(client,
1617 ADM1027_REG_TEMP_OFFSET(i) );
1619 data->tach_mode = lm85_read_value(client,
1620 ADM1027_REG_CONFIG3 );
1621 data->fan_ppr = lm85_read_value(client,
1622 ADM1027_REG_FAN_PPR );
1625 data->last_config = jiffies;
1626 }; /* last_config */
1628 data->valid = 1;
1630 mutex_unlock(&data->update_lock);
1632 return data;
1636 static int __init sm_lm85_init(void)
1638 return i2c_add_driver(&lm85_driver);
1641 static void __exit sm_lm85_exit(void)
1643 i2c_del_driver(&lm85_driver);
1646 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1647 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1648 * post 2.7.0 CVS changes.
1650 MODULE_LICENSE("GPL");
1651 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com");
1652 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1654 module_init(sm_lm85_init);
1655 module_exit(sm_lm85_exit);