2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
9 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/hwmon.h>
32 #include <linux/hwmon-vid.h>
33 #include <linux/hwmon-sysfs.h>
34 #include <linux/err.h>
35 #include <linux/mutex.h>
37 /* Addresses to scan */
38 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
40 /* Insmod parameters */
41 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102);
43 /* The LM85 registers */
45 #define LM85_REG_IN(nr) (0x20 + (nr))
46 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
47 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
49 #define LM85_REG_TEMP(nr) (0x25 + (nr))
50 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
51 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
53 /* Fan speeds are LSB, MSB (2 bytes) */
54 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
55 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
57 #define LM85_REG_PWM(nr) (0x30 + (nr))
59 #define LM85_REG_COMPANY 0x3e
60 #define LM85_REG_VERSTEP 0x3f
61 /* These are the recognized values for the above regs */
62 #define LM85_COMPANY_NATIONAL 0x01
63 #define LM85_COMPANY_ANALOG_DEV 0x41
64 #define LM85_COMPANY_SMSC 0x5c
65 #define LM85_VERSTEP_VMASK 0xf0
66 #define LM85_VERSTEP_GENERIC 0x60
67 #define LM85_VERSTEP_LM85C 0x60
68 #define LM85_VERSTEP_LM85B 0x62
69 #define LM85_VERSTEP_ADM1027 0x60
70 #define LM85_VERSTEP_ADT7463 0x62
71 #define LM85_VERSTEP_ADT7463C 0x6A
72 #define LM85_VERSTEP_EMC6D100_A0 0x60
73 #define LM85_VERSTEP_EMC6D100_A1 0x61
74 #define LM85_VERSTEP_EMC6D102 0x65
76 #define LM85_REG_CONFIG 0x40
78 #define LM85_REG_ALARM1 0x41
79 #define LM85_REG_ALARM2 0x42
81 #define LM85_REG_VID 0x43
83 /* Automated FAN control */
84 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
85 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
86 #define LM85_REG_AFAN_SPIKE1 0x62
87 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
88 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
89 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
90 #define LM85_REG_AFAN_HYST1 0x6d
91 #define LM85_REG_AFAN_HYST2 0x6e
93 #define ADM1027_REG_EXTEND_ADC1 0x76
94 #define ADM1027_REG_EXTEND_ADC2 0x77
96 #define EMC6D100_REG_ALARM3 0x7d
97 /* IN5, IN6 and IN7 */
98 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
99 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
100 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
101 #define EMC6D102_REG_EXTEND_ADC1 0x85
102 #define EMC6D102_REG_EXTEND_ADC2 0x86
103 #define EMC6D102_REG_EXTEND_ADC3 0x87
104 #define EMC6D102_REG_EXTEND_ADC4 0x88
107 /* Conversions. Rounding and limit checking is only done on the TO_REG
108 variants. Note that you should be a bit careful with which arguments
109 these macros are called: arguments may be evaluated more than once.
112 /* IN are scaled acording to built-in resistors */
113 static int lm85_scaling[] = { /* .001 Volts */
114 2500, 2250, 3300, 5000, 12000,
115 3300, 1500, 1800 /*EMC6D100*/
117 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
119 #define INS_TO_REG(n, val) \
120 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
122 #define INSEXT_FROM_REG(n, val, ext) \
123 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
125 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
127 /* FAN speed is measured using 90kHz clock */
128 static inline u16 FAN_TO_REG(unsigned long val)
132 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
134 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
137 /* Temperature is reported in .001 degC increments */
138 #define TEMP_TO_REG(val) \
139 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
140 #define TEMPEXT_FROM_REG(val, ext) \
141 SCALE(((val) << 4) + (ext), 16, 1000)
142 #define TEMP_FROM_REG(val) ((val) * 1000)
144 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
145 #define PWM_FROM_REG(val) (val)
148 /* ZONEs have the following parameters:
149 * Limit (low) temp, 1. degC
150 * Hysteresis (below limit), 1. degC (0-15)
151 * Range of speed control, .1 degC (2-80)
152 * Critical (high) temp, 1. degC
154 * FAN PWMs have the following parameters:
155 * Reference Zone, 1, 2, 3, etc.
156 * Spinup time, .05 sec
157 * PWM value at limit/low temp, 1 count
158 * PWM Frequency, 1. Hz
159 * PWM is Min or OFF below limit, flag
160 * Invert PWM output, flag
162 * Some chips filter the temp, others the fan.
163 * Filter constant (or disabled) .1 seconds
166 /* These are the zone temperature range encodings in .001 degree C */
167 static int lm85_range_map[] = {
168 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
169 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
172 static int RANGE_TO_REG(int range)
176 if (range >= lm85_range_map[15])
179 /* Find the closest match */
180 for (i = 14; i >= 0; --i) {
181 if (range >= lm85_range_map[i]) {
182 if ((lm85_range_map[i + 1] - range) <
183 (range - lm85_range_map[i]))
191 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
193 /* These are the Acoustic Enhancement, or Temperature smoothing encodings
194 * NOTE: The enable/disable bit is INCLUDED in these encodings as the
195 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value
196 * is ignored, or set to 0.
198 /* These are the PWM frequency encodings */
199 static int lm85_freq_map[] = { /* .1 Hz */
200 100, 150, 230, 300, 380, 470, 620, 940
203 static int FREQ_TO_REG(int freq)
207 if (freq >= lm85_freq_map[7])
209 for (i = 0; i < 7; ++i)
210 if (freq <= lm85_freq_map[i])
214 #define FREQ_FROM_REG(val) lm85_freq_map[(val) & 0x07]
216 /* Since we can't use strings, I'm abusing these numbers
217 * to stand in for the following meanings:
218 * 1 -- PWM responds to Zone 1
219 * 2 -- PWM responds to Zone 2
220 * 3 -- PWM responds to Zone 3
221 * 23 -- PWM responds to the higher temp of Zone 2 or 3
222 * 123 -- PWM responds to highest of Zone 1, 2, or 3
223 * 0 -- PWM is always at 0% (ie, off)
224 * -1 -- PWM is always at 100%
225 * -2 -- PWM responds to manual control
228 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
229 #define ZONE_FROM_REG(val) lm85_zone_map[((val) >> 5) & 0x07]
231 static int ZONE_TO_REG(int zone)
235 for (i = 0; i <= 7; ++i)
236 if (zone == lm85_zone_map[i])
238 if (i > 7) /* Not found. */
239 i = 3; /* Always 100% */
240 return (i & 0x07) << 5;
243 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
244 #define HYST_FROM_REG(val) ((val) * 1000)
246 /* Chip sampling rates
248 * Some sensors are not updated more frequently than once per second
249 * so it doesn't make sense to read them more often than that.
250 * We cache the results and return the saved data if the driver
251 * is called again before a second has elapsed.
253 * Also, there is significant configuration data for this chip
254 * given the automatic PWM fan control that is possible. There
255 * are about 47 bytes of config data to only 22 bytes of actual
256 * readings. So, we keep the config data up to date in the cache
257 * when it is written and only sample it once every 1 *minute*
259 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
260 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
262 /* LM85 can automatically adjust fan speeds based on temperature
263 * This structure encapsulates an entire Zone config. There are
264 * three zones (one for each temperature input) on the lm85
267 s8 limit; /* Low temp limit */
268 u8 hyst; /* Low limit hysteresis. (0-15) */
269 u8 range; /* Temp range, encoded */
270 s8 critical; /* "All fans ON" temp limit */
271 u8 off_desired; /* Actual "off" temperature specified. Preserved
272 * to prevent "drift" as other autofan control
275 u8 max_desired; /* Actual "max" temperature specified. Preserved
276 * to prevent "drift" as other autofan control
281 struct lm85_autofan {
282 u8 config; /* Register value */
283 u8 freq; /* PWM frequency, encoded */
284 u8 min_pwm; /* Minimum PWM value, encoded */
285 u8 min_off; /* Min PWM or OFF below "limit", flag */
288 /* For each registered chip, we need to keep some data in memory.
289 The structure is dynamically allocated. */
291 struct i2c_client client;
292 struct device *hwmon_dev;
295 struct mutex update_lock;
296 int valid; /* !=0 if following fields are valid */
297 unsigned long last_reading; /* In jiffies */
298 unsigned long last_config; /* In jiffies */
300 u8 in[8]; /* Register value */
301 u8 in_max[8]; /* Register value */
302 u8 in_min[8]; /* Register value */
303 s8 temp[3]; /* Register value */
304 s8 temp_min[3]; /* Register value */
305 s8 temp_max[3]; /* Register value */
306 u16 fan[4]; /* Register value */
307 u16 fan_min[4]; /* Register value */
308 u8 pwm[3]; /* Register value */
309 u8 temp_ext[3]; /* Decoded values */
310 u8 in_ext[8]; /* Decoded values */
311 u8 smooth[1]; /* Register encoding */
312 u8 vid; /* Register value */
313 u8 vrm; /* VRM version */
314 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */
315 u32 alarms; /* Register encoding, combined */
316 struct lm85_autofan autofan[3];
317 struct lm85_zone zone[3];
320 static int lm85_attach_adapter(struct i2c_adapter *adapter);
321 static int lm85_detect(struct i2c_adapter *adapter, int address,
323 static int lm85_detach_client(struct i2c_client *client);
325 static int lm85_read_value(struct i2c_client *client, u8 reg);
326 static int lm85_write_value(struct i2c_client *client, u8 reg, int value);
327 static struct lm85_data *lm85_update_device(struct device *dev);
328 static void lm85_init_client(struct i2c_client *client);
331 static struct i2c_driver lm85_driver = {
335 .attach_adapter = lm85_attach_adapter,
336 .detach_client = lm85_detach_client,
341 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
344 int nr = to_sensor_dev_attr(attr)->index;
345 struct lm85_data *data = lm85_update_device(dev);
346 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
349 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
352 int nr = to_sensor_dev_attr(attr)->index;
353 struct lm85_data *data = lm85_update_device(dev);
354 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
357 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
358 const char *buf, size_t count)
360 int nr = to_sensor_dev_attr(attr)->index;
361 struct i2c_client *client = to_i2c_client(dev);
362 struct lm85_data *data = i2c_get_clientdata(client);
363 unsigned long val = simple_strtoul(buf, NULL, 10);
365 mutex_lock(&data->update_lock);
366 data->fan_min[nr] = FAN_TO_REG(val);
367 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
368 mutex_unlock(&data->update_lock);
372 #define show_fan_offset(offset) \
373 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
374 show_fan, NULL, offset - 1); \
375 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
376 show_fan_min, set_fan_min, offset - 1)
383 /* vid, vrm, alarms */
385 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
388 struct lm85_data *data = lm85_update_device(dev);
391 if (data->type == adt7463 && (data->vid & 0x80)) {
392 /* 6-pin VID (VRM 10) */
393 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
395 /* 5-pin VID (VRM 9) */
396 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
399 return sprintf(buf, "%d\n", vid);
402 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
404 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
407 struct lm85_data *data = dev_get_drvdata(dev);
408 return sprintf(buf, "%ld\n", (long) data->vrm);
411 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
412 const char *buf, size_t count)
414 struct lm85_data *data = dev_get_drvdata(dev);
415 data->vrm = simple_strtoul(buf, NULL, 10);
419 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
421 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
424 struct lm85_data *data = lm85_update_device(dev);
425 return sprintf(buf, "%u\n", data->alarms);
428 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
430 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
433 int nr = to_sensor_dev_attr(attr)->index;
434 struct lm85_data *data = lm85_update_device(dev);
435 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
438 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
439 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
440 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
441 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
442 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
443 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
444 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
445 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
446 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
447 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
448 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
449 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
450 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
451 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
452 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
453 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
454 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
458 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
461 int nr = to_sensor_dev_attr(attr)->index;
462 struct lm85_data *data = lm85_update_device(dev);
463 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
466 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
467 const char *buf, size_t count)
469 int nr = to_sensor_dev_attr(attr)->index;
470 struct i2c_client *client = to_i2c_client(dev);
471 struct lm85_data *data = i2c_get_clientdata(client);
472 long val = simple_strtol(buf, NULL, 10);
474 mutex_lock(&data->update_lock);
475 data->pwm[nr] = PWM_TO_REG(val);
476 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
477 mutex_unlock(&data->update_lock);
481 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
484 int nr = to_sensor_dev_attr(attr)->index;
485 struct lm85_data *data = lm85_update_device(dev);
486 int pwm_zone, enable;
488 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
490 case -1: /* PWM is always at 100% */
493 case 0: /* PWM is always at 0% */
494 case -2: /* PWM responds to manual control */
497 default: /* PWM in automatic mode */
500 return sprintf(buf, "%d\n", enable);
503 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
504 *attr, const char *buf, size_t count)
506 int nr = to_sensor_dev_attr(attr)->index;
507 struct i2c_client *client = to_i2c_client(dev);
508 struct lm85_data *data = i2c_get_clientdata(client);
509 long val = simple_strtol(buf, NULL, 10);
520 /* Here we have to choose arbitrarily one of the 5 possible
521 configurations; I go for the safest */
528 mutex_lock(&data->update_lock);
529 data->autofan[nr].config = lm85_read_value(client,
530 LM85_REG_AFAN_CONFIG(nr));
531 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
533 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
534 data->autofan[nr].config);
535 mutex_unlock(&data->update_lock);
539 #define show_pwm_reg(offset) \
540 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
541 show_pwm, set_pwm, offset - 1); \
542 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
543 show_pwm_enable, set_pwm_enable, offset - 1)
551 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
554 int nr = to_sensor_dev_attr(attr)->index;
555 struct lm85_data *data = lm85_update_device(dev);
556 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
560 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
563 int nr = to_sensor_dev_attr(attr)->index;
564 struct lm85_data *data = lm85_update_device(dev);
565 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
568 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
569 const char *buf, size_t count)
571 int nr = to_sensor_dev_attr(attr)->index;
572 struct i2c_client *client = to_i2c_client(dev);
573 struct lm85_data *data = i2c_get_clientdata(client);
574 long val = simple_strtol(buf, NULL, 10);
576 mutex_lock(&data->update_lock);
577 data->in_min[nr] = INS_TO_REG(nr, val);
578 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
579 mutex_unlock(&data->update_lock);
583 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
586 int nr = to_sensor_dev_attr(attr)->index;
587 struct lm85_data *data = lm85_update_device(dev);
588 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
591 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
592 const char *buf, size_t count)
594 int nr = to_sensor_dev_attr(attr)->index;
595 struct i2c_client *client = to_i2c_client(dev);
596 struct lm85_data *data = i2c_get_clientdata(client);
597 long val = simple_strtol(buf, NULL, 10);
599 mutex_lock(&data->update_lock);
600 data->in_max[nr] = INS_TO_REG(nr, val);
601 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
602 mutex_unlock(&data->update_lock);
606 #define show_in_reg(offset) \
607 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
608 show_in, NULL, offset); \
609 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
610 show_in_min, set_in_min, offset); \
611 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
612 show_in_max, set_in_max, offset)
625 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
628 int nr = to_sensor_dev_attr(attr)->index;
629 struct lm85_data *data = lm85_update_device(dev);
630 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
631 data->temp_ext[nr]));
634 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
637 int nr = to_sensor_dev_attr(attr)->index;
638 struct lm85_data *data = lm85_update_device(dev);
639 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
642 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
643 const char *buf, size_t count)
645 int nr = to_sensor_dev_attr(attr)->index;
646 struct i2c_client *client = to_i2c_client(dev);
647 struct lm85_data *data = i2c_get_clientdata(client);
648 long val = simple_strtol(buf, NULL, 10);
650 mutex_lock(&data->update_lock);
651 data->temp_min[nr] = TEMP_TO_REG(val);
652 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
653 mutex_unlock(&data->update_lock);
657 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
660 int nr = to_sensor_dev_attr(attr)->index;
661 struct lm85_data *data = lm85_update_device(dev);
662 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
665 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
666 const char *buf, size_t count)
668 int nr = to_sensor_dev_attr(attr)->index;
669 struct i2c_client *client = to_i2c_client(dev);
670 struct lm85_data *data = i2c_get_clientdata(client);
671 long val = simple_strtol(buf, NULL, 10);
673 mutex_lock(&data->update_lock);
674 data->temp_max[nr] = TEMP_TO_REG(val);
675 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
676 mutex_unlock(&data->update_lock);
680 #define show_temp_reg(offset) \
681 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
682 show_temp, NULL, offset - 1); \
683 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
684 show_temp_min, set_temp_min, offset - 1); \
685 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
686 show_temp_max, set_temp_max, offset - 1);
693 /* Automatic PWM control */
695 static ssize_t show_pwm_auto_channels(struct device *dev,
696 struct device_attribute *attr, char *buf)
698 int nr = to_sensor_dev_attr(attr)->index;
699 struct lm85_data *data = lm85_update_device(dev);
700 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
703 static ssize_t set_pwm_auto_channels(struct device *dev,
704 struct device_attribute *attr, const char *buf, size_t count)
706 int nr = to_sensor_dev_attr(attr)->index;
707 struct i2c_client *client = to_i2c_client(dev);
708 struct lm85_data *data = i2c_get_clientdata(client);
709 long val = simple_strtol(buf, NULL, 10);
711 mutex_lock(&data->update_lock);
712 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
714 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
715 data->autofan[nr].config);
716 mutex_unlock(&data->update_lock);
720 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
721 struct device_attribute *attr, char *buf)
723 int nr = to_sensor_dev_attr(attr)->index;
724 struct lm85_data *data = lm85_update_device(dev);
725 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
728 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
729 struct device_attribute *attr, const char *buf, size_t count)
731 int nr = to_sensor_dev_attr(attr)->index;
732 struct i2c_client *client = to_i2c_client(dev);
733 struct lm85_data *data = i2c_get_clientdata(client);
734 long val = simple_strtol(buf, NULL, 10);
736 mutex_lock(&data->update_lock);
737 data->autofan[nr].min_pwm = PWM_TO_REG(val);
738 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
739 data->autofan[nr].min_pwm);
740 mutex_unlock(&data->update_lock);
744 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
745 struct device_attribute *attr, char *buf)
747 int nr = to_sensor_dev_attr(attr)->index;
748 struct lm85_data *data = lm85_update_device(dev);
749 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
752 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
753 struct device_attribute *attr, const char *buf, size_t count)
755 int nr = to_sensor_dev_attr(attr)->index;
756 struct i2c_client *client = to_i2c_client(dev);
757 struct lm85_data *data = i2c_get_clientdata(client);
758 long val = simple_strtol(buf, NULL, 10);
760 mutex_lock(&data->update_lock);
761 data->autofan[nr].min_off = val;
762 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0]
764 | (data->autofan[0].min_off ? 0x20 : 0)
765 | (data->autofan[1].min_off ? 0x40 : 0)
766 | (data->autofan[2].min_off ? 0x80 : 0));
767 mutex_unlock(&data->update_lock);
771 static ssize_t show_pwm_auto_pwm_freq(struct device *dev,
772 struct device_attribute *attr, char *buf)
774 int nr = to_sensor_dev_attr(attr)->index;
775 struct lm85_data *data = lm85_update_device(dev);
776 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->autofan[nr].freq));
779 static ssize_t set_pwm_auto_pwm_freq(struct device *dev,
780 struct device_attribute *attr, const char *buf, size_t count)
782 int nr = to_sensor_dev_attr(attr)->index;
783 struct i2c_client *client = to_i2c_client(dev);
784 struct lm85_data *data = i2c_get_clientdata(client);
785 long val = simple_strtol(buf, NULL, 10);
787 mutex_lock(&data->update_lock);
788 data->autofan[nr].freq = FREQ_TO_REG(val);
789 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
790 (data->zone[nr].range << 4)
791 | data->autofan[nr].freq);
792 mutex_unlock(&data->update_lock);
796 #define pwm_auto(offset) \
797 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
798 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
799 set_pwm_auto_channels, offset - 1); \
800 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
801 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
802 set_pwm_auto_pwm_min, offset - 1); \
803 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
804 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
805 set_pwm_auto_pwm_minctl, offset - 1); \
806 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \
807 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \
808 set_pwm_auto_pwm_freq, offset - 1);
814 /* Temperature settings for automatic PWM control */
816 static ssize_t show_temp_auto_temp_off(struct device *dev,
817 struct device_attribute *attr, char *buf)
819 int nr = to_sensor_dev_attr(attr)->index;
820 struct lm85_data *data = lm85_update_device(dev);
821 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
822 HYST_FROM_REG(data->zone[nr].hyst));
825 static ssize_t set_temp_auto_temp_off(struct device *dev,
826 struct device_attribute *attr, const char *buf, size_t count)
828 int nr = to_sensor_dev_attr(attr)->index;
829 struct i2c_client *client = to_i2c_client(dev);
830 struct lm85_data *data = i2c_get_clientdata(client);
832 long val = simple_strtol(buf, NULL, 10);
834 mutex_lock(&data->update_lock);
835 min = TEMP_FROM_REG(data->zone[nr].limit);
836 data->zone[nr].off_desired = TEMP_TO_REG(val);
837 data->zone[nr].hyst = HYST_TO_REG(min - val);
838 if (nr == 0 || nr == 1) {
839 lm85_write_value(client, LM85_REG_AFAN_HYST1,
840 (data->zone[0].hyst << 4)
841 | data->zone[1].hyst);
843 lm85_write_value(client, LM85_REG_AFAN_HYST2,
844 (data->zone[2].hyst << 4));
846 mutex_unlock(&data->update_lock);
850 static ssize_t show_temp_auto_temp_min(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));
858 static ssize_t set_temp_auto_temp_min(struct device *dev,
859 struct device_attribute *attr, const char *buf, size_t count)
861 int nr = to_sensor_dev_attr(attr)->index;
862 struct i2c_client *client = to_i2c_client(dev);
863 struct lm85_data *data = i2c_get_clientdata(client);
864 long val = simple_strtol(buf, NULL, 10);
866 mutex_lock(&data->update_lock);
867 data->zone[nr].limit = TEMP_TO_REG(val);
868 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
869 data->zone[nr].limit);
871 /* Update temp_auto_max and temp_auto_range */
872 data->zone[nr].range = RANGE_TO_REG(
873 TEMP_FROM_REG(data->zone[nr].max_desired) -
874 TEMP_FROM_REG(data->zone[nr].limit));
875 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
876 ((data->zone[nr].range & 0x0f) << 4)
877 | (data->autofan[nr].freq & 0x07));
879 /* Update temp_auto_hyst and temp_auto_off */
880 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
881 data->zone[nr].limit) - TEMP_FROM_REG(
882 data->zone[nr].off_desired));
883 if (nr == 0 || nr == 1) {
884 lm85_write_value(client, LM85_REG_AFAN_HYST1,
885 (data->zone[0].hyst << 4)
886 | data->zone[1].hyst);
888 lm85_write_value(client, LM85_REG_AFAN_HYST2,
889 (data->zone[2].hyst << 4));
891 mutex_unlock(&data->update_lock);
895 static ssize_t show_temp_auto_temp_max(struct device *dev,
896 struct device_attribute *attr, char *buf)
898 int nr = to_sensor_dev_attr(attr)->index;
899 struct lm85_data *data = lm85_update_device(dev);
900 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
901 RANGE_FROM_REG(data->zone[nr].range));
904 static ssize_t set_temp_auto_temp_max(struct device *dev,
905 struct device_attribute *attr, const char *buf, size_t count)
907 int nr = to_sensor_dev_attr(attr)->index;
908 struct i2c_client *client = to_i2c_client(dev);
909 struct lm85_data *data = i2c_get_clientdata(client);
911 long val = simple_strtol(buf, NULL, 10);
913 mutex_lock(&data->update_lock);
914 min = TEMP_FROM_REG(data->zone[nr].limit);
915 data->zone[nr].max_desired = TEMP_TO_REG(val);
916 data->zone[nr].range = RANGE_TO_REG(
918 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
919 ((data->zone[nr].range & 0x0f) << 4)
920 | (data->autofan[nr].freq & 0x07));
921 mutex_unlock(&data->update_lock);
925 static ssize_t show_temp_auto_temp_crit(struct device *dev,
926 struct device_attribute *attr, char *buf)
928 int nr = to_sensor_dev_attr(attr)->index;
929 struct lm85_data *data = lm85_update_device(dev);
930 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
933 static ssize_t set_temp_auto_temp_crit(struct device *dev,
934 struct device_attribute *attr, const char *buf, size_t count)
936 int nr = to_sensor_dev_attr(attr)->index;
937 struct i2c_client *client = to_i2c_client(dev);
938 struct lm85_data *data = i2c_get_clientdata(client);
939 long val = simple_strtol(buf, NULL, 10);
941 mutex_lock(&data->update_lock);
942 data->zone[nr].critical = TEMP_TO_REG(val);
943 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
944 data->zone[nr].critical);
945 mutex_unlock(&data->update_lock);
949 #define temp_auto(offset) \
950 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
951 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
952 set_temp_auto_temp_off, offset - 1); \
953 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
954 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
955 set_temp_auto_temp_min, offset - 1); \
956 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
957 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
958 set_temp_auto_temp_max, offset - 1); \
959 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
960 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
961 set_temp_auto_temp_crit, offset - 1);
967 static int lm85_attach_adapter(struct i2c_adapter *adapter)
969 if (!(adapter->class & I2C_CLASS_HWMON))
971 return i2c_probe(adapter, &addr_data, lm85_detect);
974 static struct attribute *lm85_attributes[] = {
975 &sensor_dev_attr_fan1_input.dev_attr.attr,
976 &sensor_dev_attr_fan2_input.dev_attr.attr,
977 &sensor_dev_attr_fan3_input.dev_attr.attr,
978 &sensor_dev_attr_fan4_input.dev_attr.attr,
979 &sensor_dev_attr_fan1_min.dev_attr.attr,
980 &sensor_dev_attr_fan2_min.dev_attr.attr,
981 &sensor_dev_attr_fan3_min.dev_attr.attr,
982 &sensor_dev_attr_fan4_min.dev_attr.attr,
983 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
984 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
985 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
986 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
988 &sensor_dev_attr_pwm1.dev_attr.attr,
989 &sensor_dev_attr_pwm2.dev_attr.attr,
990 &sensor_dev_attr_pwm3.dev_attr.attr,
991 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
992 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
993 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
995 &sensor_dev_attr_in0_input.dev_attr.attr,
996 &sensor_dev_attr_in1_input.dev_attr.attr,
997 &sensor_dev_attr_in2_input.dev_attr.attr,
998 &sensor_dev_attr_in3_input.dev_attr.attr,
999 &sensor_dev_attr_in0_min.dev_attr.attr,
1000 &sensor_dev_attr_in1_min.dev_attr.attr,
1001 &sensor_dev_attr_in2_min.dev_attr.attr,
1002 &sensor_dev_attr_in3_min.dev_attr.attr,
1003 &sensor_dev_attr_in0_max.dev_attr.attr,
1004 &sensor_dev_attr_in1_max.dev_attr.attr,
1005 &sensor_dev_attr_in2_max.dev_attr.attr,
1006 &sensor_dev_attr_in3_max.dev_attr.attr,
1007 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1008 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1009 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1010 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1012 &sensor_dev_attr_temp1_input.dev_attr.attr,
1013 &sensor_dev_attr_temp2_input.dev_attr.attr,
1014 &sensor_dev_attr_temp3_input.dev_attr.attr,
1015 &sensor_dev_attr_temp1_min.dev_attr.attr,
1016 &sensor_dev_attr_temp2_min.dev_attr.attr,
1017 &sensor_dev_attr_temp3_min.dev_attr.attr,
1018 &sensor_dev_attr_temp1_max.dev_attr.attr,
1019 &sensor_dev_attr_temp2_max.dev_attr.attr,
1020 &sensor_dev_attr_temp3_max.dev_attr.attr,
1021 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1022 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1023 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1024 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1025 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1027 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1028 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1029 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1030 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1031 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1032 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1033 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1034 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1035 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1036 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr,
1037 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr,
1038 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr,
1040 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1041 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1042 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1043 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1044 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1045 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1046 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1047 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1048 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1049 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1050 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1051 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1054 &dev_attr_cpu0_vid.attr,
1055 &dev_attr_alarms.attr,
1059 static const struct attribute_group lm85_group = {
1060 .attrs = lm85_attributes,
1063 static struct attribute *lm85_attributes_in4[] = {
1064 &sensor_dev_attr_in4_input.dev_attr.attr,
1065 &sensor_dev_attr_in4_min.dev_attr.attr,
1066 &sensor_dev_attr_in4_max.dev_attr.attr,
1067 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1071 static const struct attribute_group lm85_group_in4 = {
1072 .attrs = lm85_attributes_in4,
1075 static struct attribute *lm85_attributes_in567[] = {
1076 &sensor_dev_attr_in5_input.dev_attr.attr,
1077 &sensor_dev_attr_in6_input.dev_attr.attr,
1078 &sensor_dev_attr_in7_input.dev_attr.attr,
1079 &sensor_dev_attr_in5_min.dev_attr.attr,
1080 &sensor_dev_attr_in6_min.dev_attr.attr,
1081 &sensor_dev_attr_in7_min.dev_attr.attr,
1082 &sensor_dev_attr_in5_max.dev_attr.attr,
1083 &sensor_dev_attr_in6_max.dev_attr.attr,
1084 &sensor_dev_attr_in7_max.dev_attr.attr,
1085 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1086 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1087 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1091 static const struct attribute_group lm85_group_in567 = {
1092 .attrs = lm85_attributes_in567,
1095 static int lm85_detect(struct i2c_adapter *adapter, int address,
1098 int company, verstep;
1099 struct i2c_client *new_client = NULL;
1100 struct lm85_data *data;
1102 const char *type_name = "";
1104 if (!i2c_check_functionality(adapter,
1105 I2C_FUNC_SMBUS_BYTE_DATA)) {
1106 /* We need to be able to do byte I/O */
1110 /* OK. For now, we presume we have a valid client. We now create the
1111 client structure, even though we cannot fill it completely yet.
1112 But it allows us to access lm85_{read,write}_value. */
1114 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
1119 new_client = &data->client;
1120 i2c_set_clientdata(new_client, data);
1121 new_client->addr = address;
1122 new_client->adapter = adapter;
1123 new_client->driver = &lm85_driver;
1124 new_client->flags = 0;
1126 /* Now, we do the remaining detection. */
1128 company = lm85_read_value(new_client, LM85_REG_COMPANY);
1129 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP);
1131 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with"
1132 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1133 i2c_adapter_id(new_client->adapter), new_client->addr,
1136 /* If auto-detecting, Determine the chip type. */
1138 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n",
1139 i2c_adapter_id(adapter), address);
1140 if (company == LM85_COMPANY_NATIONAL
1141 && verstep == LM85_VERSTEP_LM85C) {
1143 } else if (company == LM85_COMPANY_NATIONAL
1144 && verstep == LM85_VERSTEP_LM85B) {
1146 } else if (company == LM85_COMPANY_NATIONAL
1147 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1148 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1149 " Defaulting to LM85.\n", verstep);
1151 } else if (company == LM85_COMPANY_ANALOG_DEV
1152 && verstep == LM85_VERSTEP_ADM1027) {
1154 } else if (company == LM85_COMPANY_ANALOG_DEV
1155 && (verstep == LM85_VERSTEP_ADT7463
1156 || verstep == LM85_VERSTEP_ADT7463C)) {
1158 } else if (company == LM85_COMPANY_ANALOG_DEV
1159 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1160 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x"
1161 " Defaulting to Generic LM85.\n", verstep);
1163 } else if (company == LM85_COMPANY_SMSC
1164 && (verstep == LM85_VERSTEP_EMC6D100_A0
1165 || verstep == LM85_VERSTEP_EMC6D100_A1)) {
1166 /* Unfortunately, we can't tell a '100 from a '101
1167 * from the registers. Since a '101 is a '100
1168 * in a package with fewer pins and therefore no
1169 * 3.3V, 1.5V or 1.8V inputs, perhaps if those
1170 * inputs read 0, then it's a '101.
1173 } else if (company == LM85_COMPANY_SMSC
1174 && verstep == LM85_VERSTEP_EMC6D102) {
1176 } else if (company == LM85_COMPANY_SMSC
1177 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1178 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n");
1179 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x"
1180 " Defaulting to Generic LM85.\n", verstep);
1182 } else if (kind == any_chip
1183 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) {
1184 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n");
1185 /* Leave kind as "any_chip" */
1187 dev_dbg(&adapter->dev, "Autodetection failed\n");
1188 /* Not an LM85... */
1189 if (kind == any_chip) { /* User used force=x,y */
1190 dev_err(&adapter->dev, "Generic LM85 Version 6 not"
1191 " found at %d,0x%02x. Try force_lm85c.\n",
1192 i2c_adapter_id(adapter), address);
1199 /* Fill in the chip specific driver values */
1200 if (kind == any_chip)
1202 else if (kind == lm85b)
1203 type_name = "lm85b";
1204 else if (kind == lm85c)
1205 type_name = "lm85c";
1206 else if (kind == adm1027)
1207 type_name = "adm1027";
1208 else if (kind == adt7463)
1209 type_name = "adt7463";
1210 else if (kind == emc6d100)
1211 type_name = "emc6d100";
1212 else if (kind == emc6d102)
1213 type_name = "emc6d102";
1214 strlcpy(new_client->name, type_name, I2C_NAME_SIZE);
1216 /* Fill in the remaining client fields */
1219 mutex_init(&data->update_lock);
1221 /* Tell the I2C layer a new client has arrived */
1222 if ((err = i2c_attach_client(new_client)))
1225 /* Set the VRM version */
1226 data->vrm = vid_which_vrm();
1228 /* Initialize the LM85 chip */
1229 lm85_init_client(new_client);
1231 /* Register sysfs hooks */
1232 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group)))
1235 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used
1236 as a sixth digital VID input rather than an analog input. */
1237 data->vid = lm85_read_value(new_client, LM85_REG_VID);
1238 if (!(kind == adt7463 && (data->vid & 0x80)))
1239 if ((err = sysfs_create_group(&new_client->dev.kobj,
1243 /* The EMC6D100 has 3 additional voltage inputs */
1244 if (kind == emc6d100)
1245 if ((err = sysfs_create_group(&new_client->dev.kobj,
1246 &lm85_group_in567)))
1249 data->hwmon_dev = hwmon_device_register(&new_client->dev);
1250 if (IS_ERR(data->hwmon_dev)) {
1251 err = PTR_ERR(data->hwmon_dev);
1257 /* Error out and cleanup code */
1259 sysfs_remove_group(&new_client->dev.kobj, &lm85_group);
1260 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in4);
1261 if (kind == emc6d100)
1262 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in567);
1264 i2c_detach_client(new_client);
1271 static int lm85_detach_client(struct i2c_client *client)
1273 struct lm85_data *data = i2c_get_clientdata(client);
1274 hwmon_device_unregister(data->hwmon_dev);
1275 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1276 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1277 if (data->type == emc6d100)
1278 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1279 i2c_detach_client(client);
1285 static int lm85_read_value(struct i2c_client *client, u8 reg)
1289 /* What size location is it? */
1291 case LM85_REG_FAN(0): /* Read WORD data */
1292 case LM85_REG_FAN(1):
1293 case LM85_REG_FAN(2):
1294 case LM85_REG_FAN(3):
1295 case LM85_REG_FAN_MIN(0):
1296 case LM85_REG_FAN_MIN(1):
1297 case LM85_REG_FAN_MIN(2):
1298 case LM85_REG_FAN_MIN(3):
1299 case LM85_REG_ALARM1: /* Read both bytes at once */
1300 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1301 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1303 default: /* Read BYTE data */
1304 res = i2c_smbus_read_byte_data(client, reg);
1311 static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
1316 case LM85_REG_FAN(0): /* Write WORD data */
1317 case LM85_REG_FAN(1):
1318 case LM85_REG_FAN(2):
1319 case LM85_REG_FAN(3):
1320 case LM85_REG_FAN_MIN(0):
1321 case LM85_REG_FAN_MIN(1):
1322 case LM85_REG_FAN_MIN(2):
1323 case LM85_REG_FAN_MIN(3):
1324 /* NOTE: ALARM is read only, so not included here */
1325 res = i2c_smbus_write_byte_data(client, reg, value & 0xff);
1326 res |= i2c_smbus_write_byte_data(client, reg + 1,
1327 (value >> 8) & 0xff);
1329 default: /* Write BYTE data */
1330 res = i2c_smbus_write_byte_data(client, reg, value);
1337 static void lm85_init_client(struct i2c_client *client)
1340 struct lm85_data *data = i2c_get_clientdata(client);
1342 dev_dbg(&client->dev, "Initializing device\n");
1344 /* Warn if part was not "READY" */
1345 value = lm85_read_value(client, LM85_REG_CONFIG);
1346 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value);
1348 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n",
1349 i2c_adapter_id(client->adapter), client->addr);
1351 if (!(value & 0x04)) {
1352 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n",
1353 i2c_adapter_id(client->adapter), client->addr);
1356 && (data->type == adm1027
1357 || data->type == adt7463)) {
1358 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. "
1359 "Please report this to the lm85 maintainer.\n",
1360 i2c_adapter_id(client->adapter), client->addr);
1363 /* WE INTENTIONALLY make no changes to the limits,
1364 * offsets, pwms, fans and zones. If they were
1365 * configured, we don't want to mess with them.
1366 * If they weren't, the default is 100% PWM, no
1367 * control and will suffice until 'sensors -s'
1368 * can be run by the user.
1371 /* Start monitoring */
1372 value = lm85_read_value(client, LM85_REG_CONFIG);
1373 /* Try to clear LOCK, Set START, save everything else */
1374 value = (value & ~0x02) | 0x01;
1375 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1376 lm85_write_value(client, LM85_REG_CONFIG, value);
1379 static struct lm85_data *lm85_update_device(struct device *dev)
1381 struct i2c_client *client = to_i2c_client(dev);
1382 struct lm85_data *data = i2c_get_clientdata(client);
1385 mutex_lock(&data->update_lock);
1388 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1389 /* Things that change quickly */
1390 dev_dbg(&client->dev, "Reading sensor values\n");
1392 /* Have to read extended bits first to "freeze" the
1393 * more significant bits that are read later.
1394 * There are 2 additional resolution bits per channel and we
1395 * have room for 4, so we shift them to the left.
1397 if (data->type == adm1027 || data->type == adt7463) {
1398 int ext1 = lm85_read_value(client,
1399 ADM1027_REG_EXTEND_ADC1);
1400 int ext2 = lm85_read_value(client,
1401 ADM1027_REG_EXTEND_ADC2);
1402 int val = (ext1 << 8) + ext2;
1404 for (i = 0; i <= 4; i++)
1406 ((val >> (i * 2)) & 0x03) << 2;
1408 for (i = 0; i <= 2; i++)
1410 (val >> ((i + 4) * 2)) & 0x0c;
1413 data->vid = lm85_read_value(client, LM85_REG_VID);
1415 for (i = 0; i <= 3; ++i) {
1417 lm85_read_value(client, LM85_REG_IN(i));
1420 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1421 data->in[4] = lm85_read_value(client,
1425 for (i = 0; i <= 3; ++i) {
1427 lm85_read_value(client, LM85_REG_FAN(i));
1430 for (i = 0; i <= 2; ++i) {
1432 lm85_read_value(client, LM85_REG_TEMP(i));
1435 for (i = 0; i <= 2; ++i) {
1437 lm85_read_value(client, LM85_REG_PWM(i));
1440 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1442 if (data->type == emc6d100) {
1443 /* Three more voltage sensors */
1444 for (i = 5; i <= 7; ++i) {
1445 data->in[i] = lm85_read_value(client,
1446 EMC6D100_REG_IN(i));
1448 /* More alarm bits */
1449 data->alarms |= lm85_read_value(client,
1450 EMC6D100_REG_ALARM3) << 16;
1451 } else if (data->type == emc6d102) {
1452 /* Have to read LSB bits after the MSB ones because
1453 the reading of the MSB bits has frozen the
1454 LSBs (backward from the ADM1027).
1456 int ext1 = lm85_read_value(client,
1457 EMC6D102_REG_EXTEND_ADC1);
1458 int ext2 = lm85_read_value(client,
1459 EMC6D102_REG_EXTEND_ADC2);
1460 int ext3 = lm85_read_value(client,
1461 EMC6D102_REG_EXTEND_ADC3);
1462 int ext4 = lm85_read_value(client,
1463 EMC6D102_REG_EXTEND_ADC4);
1464 data->in_ext[0] = ext3 & 0x0f;
1465 data->in_ext[1] = ext4 & 0x0f;
1466 data->in_ext[2] = (ext4 >> 4) & 0x0f;
1467 data->in_ext[3] = (ext3 >> 4) & 0x0f;
1468 data->in_ext[4] = (ext2 >> 4) & 0x0f;
1470 data->temp_ext[0] = ext1 & 0x0f;
1471 data->temp_ext[1] = ext2 & 0x0f;
1472 data->temp_ext[2] = (ext1 >> 4) & 0x0f;
1475 data->last_reading = jiffies;
1476 } /* last_reading */
1479 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1480 /* Things that don't change often */
1481 dev_dbg(&client->dev, "Reading config values\n");
1483 for (i = 0; i <= 3; ++i) {
1485 lm85_read_value(client, LM85_REG_IN_MIN(i));
1487 lm85_read_value(client, LM85_REG_IN_MAX(i));
1490 if (!(data->type == adt7463 && (data->vid & 0x80))) {
1491 data->in_min[4] = lm85_read_value(client,
1492 LM85_REG_IN_MIN(4));
1493 data->in_max[4] = lm85_read_value(client,
1494 LM85_REG_IN_MAX(4));
1497 if (data->type == emc6d100) {
1498 for (i = 5; i <= 7; ++i) {
1499 data->in_min[i] = lm85_read_value(client,
1500 EMC6D100_REG_IN_MIN(i));
1501 data->in_max[i] = lm85_read_value(client,
1502 EMC6D100_REG_IN_MAX(i));
1506 for (i = 0; i <= 3; ++i) {
1508 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1511 for (i = 0; i <= 2; ++i) {
1513 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1515 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1518 for (i = 0; i <= 2; ++i) {
1520 data->autofan[i].config =
1521 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1522 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1523 data->autofan[i].freq = val & 0x07;
1524 data->zone[i].range = (val >> 4) & 0x0f;
1525 data->autofan[i].min_pwm =
1526 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1527 data->zone[i].limit =
1528 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1529 data->zone[i].critical =
1530 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1533 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1534 data->smooth[0] = i & 0x0f;
1535 data->syncpwm3 = i & 0x10; /* Save PWM3 config */
1536 data->autofan[0].min_off = (i & 0x20) != 0;
1537 data->autofan[1].min_off = (i & 0x40) != 0;
1538 data->autofan[2].min_off = (i & 0x80) != 0;
1540 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1541 data->zone[0].hyst = (i >> 4) & 0x0f;
1542 data->zone[1].hyst = i & 0x0f;
1544 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1545 data->zone[2].hyst = (i >> 4) & 0x0f;
1547 data->last_config = jiffies;
1552 mutex_unlock(&data->update_lock);
1558 static int __init sm_lm85_init(void)
1560 return i2c_add_driver(&lm85_driver);
1563 static void __exit sm_lm85_exit(void)
1565 i2c_del_driver(&lm85_driver);
1568 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect.
1569 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with
1570 * post 2.7.0 CVS changes.
1572 MODULE_LICENSE("GPL");
1573 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1574 "Margit Schubert-While <margitsw@t-online.de>, "
1575 "Justin Thiessen <jthiessen@penguincomputing.com");
1576 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1578 module_init(sm_lm85_init);
1579 module_exit(sm_lm85_exit);