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>
8 Copyright (C) 2007--2009 Jean Delvare <khali@linux-fr.org>
10 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <linux/jiffies.h>
31 #include <linux/i2c.h>
32 #include <linux/hwmon.h>
33 #include <linux/hwmon-vid.h>
34 #include <linux/hwmon-sysfs.h>
35 #include <linux/err.h>
36 #include <linux/mutex.h>
38 /* Addresses to scan */
39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
42 any_chip, lm85b, lm85c,
43 adm1027, adt7463, adt7468,
44 emc6d100, emc6d102, emc6d103, emc6d103s
47 /* The LM85 registers */
49 #define LM85_REG_IN(nr) (0x20 + (nr))
50 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
51 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
53 #define LM85_REG_TEMP(nr) (0x25 + (nr))
54 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
55 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
57 /* Fan speeds are LSB, MSB (2 bytes) */
58 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
59 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
61 #define LM85_REG_PWM(nr) (0x30 + (nr))
63 #define LM85_REG_COMPANY 0x3e
64 #define LM85_REG_VERSTEP 0x3f
66 #define ADT7468_REG_CFG5 0x7c
67 #define ADT7468_OFF64 (1 << 0)
68 #define ADT7468_HFPWM (1 << 1)
69 #define IS_ADT7468_OFF64(data) \
70 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
71 #define IS_ADT7468_HFPWM(data) \
72 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
74 /* These are the recognized values for the above regs */
75 #define LM85_COMPANY_NATIONAL 0x01
76 #define LM85_COMPANY_ANALOG_DEV 0x41
77 #define LM85_COMPANY_SMSC 0x5c
78 #define LM85_VERSTEP_VMASK 0xf0
79 #define LM85_VERSTEP_GENERIC 0x60
80 #define LM85_VERSTEP_GENERIC2 0x70
81 #define LM85_VERSTEP_LM85C 0x60
82 #define LM85_VERSTEP_LM85B 0x62
83 #define LM85_VERSTEP_LM96000_1 0x68
84 #define LM85_VERSTEP_LM96000_2 0x69
85 #define LM85_VERSTEP_ADM1027 0x60
86 #define LM85_VERSTEP_ADT7463 0x62
87 #define LM85_VERSTEP_ADT7463C 0x6A
88 #define LM85_VERSTEP_ADT7468_1 0x71
89 #define LM85_VERSTEP_ADT7468_2 0x72
90 #define LM85_VERSTEP_EMC6D100_A0 0x60
91 #define LM85_VERSTEP_EMC6D100_A1 0x61
92 #define LM85_VERSTEP_EMC6D102 0x65
93 #define LM85_VERSTEP_EMC6D103_A0 0x68
94 #define LM85_VERSTEP_EMC6D103_A1 0x69
95 #define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
97 #define LM85_REG_CONFIG 0x40
99 #define LM85_REG_ALARM1 0x41
100 #define LM85_REG_ALARM2 0x42
102 #define LM85_REG_VID 0x43
104 /* Automated FAN control */
105 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
106 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
107 #define LM85_REG_AFAN_SPIKE1 0x62
108 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
109 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
110 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
111 #define LM85_REG_AFAN_HYST1 0x6d
112 #define LM85_REG_AFAN_HYST2 0x6e
114 #define ADM1027_REG_EXTEND_ADC1 0x76
115 #define ADM1027_REG_EXTEND_ADC2 0x77
117 #define EMC6D100_REG_ALARM3 0x7d
118 /* IN5, IN6 and IN7 */
119 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
120 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
121 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
122 #define EMC6D102_REG_EXTEND_ADC1 0x85
123 #define EMC6D102_REG_EXTEND_ADC2 0x86
124 #define EMC6D102_REG_EXTEND_ADC3 0x87
125 #define EMC6D102_REG_EXTEND_ADC4 0x88
128 /* Conversions. Rounding and limit checking is only done on the TO_REG
129 variants. Note that you should be a bit careful with which arguments
130 these macros are called: arguments may be evaluated more than once.
133 /* IN are scaled according to built-in resistors */
134 static const int lm85_scaling[] = { /* .001 Volts */
135 2500, 2250, 3300, 5000, 12000,
136 3300, 1500, 1800 /*EMC6D100*/
138 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
140 #define INS_TO_REG(n, val) \
141 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
143 #define INSEXT_FROM_REG(n, val, ext) \
144 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
146 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
148 /* FAN speed is measured using 90kHz clock */
149 static inline u16 FAN_TO_REG(unsigned long val)
153 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
155 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
158 /* Temperature is reported in .001 degC increments */
159 #define TEMP_TO_REG(val) \
160 DIV_ROUND_CLOSEST(SENSORS_LIMIT((val), -127000, 127000), 1000)
161 #define TEMPEXT_FROM_REG(val, ext) \
162 SCALE(((val) << 4) + (ext), 16, 1000)
163 #define TEMP_FROM_REG(val) ((val) * 1000)
165 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
166 #define PWM_FROM_REG(val) (val)
169 /* ZONEs have the following parameters:
170 * Limit (low) temp, 1. degC
171 * Hysteresis (below limit), 1. degC (0-15)
172 * Range of speed control, .1 degC (2-80)
173 * Critical (high) temp, 1. degC
175 * FAN PWMs have the following parameters:
176 * Reference Zone, 1, 2, 3, etc.
177 * Spinup time, .05 sec
178 * PWM value at limit/low temp, 1 count
179 * PWM Frequency, 1. Hz
180 * PWM is Min or OFF below limit, flag
181 * Invert PWM output, flag
183 * Some chips filter the temp, others the fan.
184 * Filter constant (or disabled) .1 seconds
187 /* These are the zone temperature range encodings in .001 degree C */
188 static const int lm85_range_map[] = {
189 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
190 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
193 static int RANGE_TO_REG(long range)
197 /* Find the closest match */
198 for (i = 0; i < 15; ++i) {
199 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
205 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
207 /* These are the PWM frequency encodings */
208 static const int lm85_freq_map[8] = { /* 1 Hz */
209 10, 15, 23, 30, 38, 47, 61, 94
211 static const int adm1027_freq_map[8] = { /* 1 Hz */
212 11, 15, 22, 29, 35, 44, 59, 88
215 static int FREQ_TO_REG(const int *map, unsigned long freq)
219 /* Find the closest match */
220 for (i = 0; i < 7; ++i)
221 if (freq <= (map[i] + map[i + 1]) / 2)
226 static int FREQ_FROM_REG(const int *map, u8 reg)
228 return map[reg & 0x07];
231 /* Since we can't use strings, I'm abusing these numbers
232 * to stand in for the following meanings:
233 * 1 -- PWM responds to Zone 1
234 * 2 -- PWM responds to Zone 2
235 * 3 -- PWM responds to Zone 3
236 * 23 -- PWM responds to the higher temp of Zone 2 or 3
237 * 123 -- PWM responds to highest of Zone 1, 2, or 3
238 * 0 -- PWM is always at 0% (ie, off)
239 * -1 -- PWM is always at 100%
240 * -2 -- PWM responds to manual control
243 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
244 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
246 static int ZONE_TO_REG(int zone)
250 for (i = 0; i <= 7; ++i)
251 if (zone == lm85_zone_map[i])
253 if (i > 7) /* Not found. */
254 i = 3; /* Always 100% */
258 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
259 #define HYST_FROM_REG(val) ((val) * 1000)
261 /* Chip sampling rates
263 * Some sensors are not updated more frequently than once per second
264 * so it doesn't make sense to read them more often than that.
265 * We cache the results and return the saved data if the driver
266 * is called again before a second has elapsed.
268 * Also, there is significant configuration data for this chip
269 * given the automatic PWM fan control that is possible. There
270 * are about 47 bytes of config data to only 22 bytes of actual
271 * readings. So, we keep the config data up to date in the cache
272 * when it is written and only sample it once every 1 *minute*
274 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
275 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
277 /* LM85 can automatically adjust fan speeds based on temperature
278 * This structure encapsulates an entire Zone config. There are
279 * three zones (one for each temperature input) on the lm85
282 s8 limit; /* Low temp limit */
283 u8 hyst; /* Low limit hysteresis. (0-15) */
284 u8 range; /* Temp range, encoded */
285 s8 critical; /* "All fans ON" temp limit */
286 u8 max_desired; /* Actual "max" temperature specified. Preserved
287 * to prevent "drift" as other autofan control
292 struct lm85_autofan {
293 u8 config; /* Register value */
294 u8 min_pwm; /* Minimum PWM value, encoded */
295 u8 min_off; /* Min PWM or OFF below "limit", flag */
298 /* For each registered chip, we need to keep some data in memory.
299 The structure is dynamically allocated. */
301 struct device *hwmon_dev;
305 bool has_vid5; /* true if VID5 is configured for ADT7463 or ADT7468 */
307 struct mutex update_lock;
308 int valid; /* !=0 if following fields are valid */
309 unsigned long last_reading; /* In jiffies */
310 unsigned long last_config; /* In jiffies */
312 u8 in[8]; /* Register value */
313 u8 in_max[8]; /* Register value */
314 u8 in_min[8]; /* Register value */
315 s8 temp[3]; /* Register value */
316 s8 temp_min[3]; /* Register value */
317 s8 temp_max[3]; /* Register value */
318 u16 fan[4]; /* Register value */
319 u16 fan_min[4]; /* Register value */
320 u8 pwm[3]; /* Register value */
321 u8 pwm_freq[3]; /* Register encoding */
322 u8 temp_ext[3]; /* Decoded values */
323 u8 in_ext[8]; /* Decoded values */
324 u8 vid; /* Register value */
325 u8 vrm; /* VRM version */
326 u32 alarms; /* Register encoding, combined */
327 u8 cfg5; /* Config Register 5 on ADT7468 */
328 struct lm85_autofan autofan[3];
329 struct lm85_zone zone[3];
332 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info);
333 static int lm85_probe(struct i2c_client *client,
334 const struct i2c_device_id *id);
335 static int lm85_remove(struct i2c_client *client);
337 static int lm85_read_value(struct i2c_client *client, u8 reg);
338 static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
339 static struct lm85_data *lm85_update_device(struct device *dev);
342 static const struct i2c_device_id lm85_id[] = {
343 { "adm1027", adm1027 },
344 { "adt7463", adt7463 },
345 { "adt7468", adt7468 },
346 { "lm85", any_chip },
349 { "emc6d100", emc6d100 },
350 { "emc6d101", emc6d100 },
351 { "emc6d102", emc6d102 },
352 { "emc6d103", emc6d103 },
353 { "emc6d103s", emc6d103s },
356 MODULE_DEVICE_TABLE(i2c, lm85_id);
358 static struct i2c_driver lm85_driver = {
359 .class = I2C_CLASS_HWMON,
364 .remove = lm85_remove,
366 .detect = lm85_detect,
367 .address_list = normal_i2c,
372 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
375 int nr = to_sensor_dev_attr(attr)->index;
376 struct lm85_data *data = lm85_update_device(dev);
377 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
380 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
383 int nr = to_sensor_dev_attr(attr)->index;
384 struct lm85_data *data = lm85_update_device(dev);
385 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
388 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
389 const char *buf, size_t count)
391 int nr = to_sensor_dev_attr(attr)->index;
392 struct i2c_client *client = to_i2c_client(dev);
393 struct lm85_data *data = i2c_get_clientdata(client);
394 unsigned long val = simple_strtoul(buf, NULL, 10);
396 mutex_lock(&data->update_lock);
397 data->fan_min[nr] = FAN_TO_REG(val);
398 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
399 mutex_unlock(&data->update_lock);
403 #define show_fan_offset(offset) \
404 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
405 show_fan, NULL, offset - 1); \
406 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
407 show_fan_min, set_fan_min, offset - 1)
414 /* vid, vrm, alarms */
416 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
419 struct lm85_data *data = lm85_update_device(dev);
422 if (data->has_vid5) {
423 /* 6-pin VID (VRM 10) */
424 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
426 /* 5-pin VID (VRM 9) */
427 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
430 return sprintf(buf, "%d\n", vid);
433 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
435 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
438 struct lm85_data *data = dev_get_drvdata(dev);
439 return sprintf(buf, "%ld\n", (long) data->vrm);
442 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
443 const char *buf, size_t count)
445 struct lm85_data *data = dev_get_drvdata(dev);
448 val = simple_strtoul(buf, NULL, 10);
456 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
458 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
461 struct lm85_data *data = lm85_update_device(dev);
462 return sprintf(buf, "%u\n", data->alarms);
465 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
467 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
470 int nr = to_sensor_dev_attr(attr)->index;
471 struct lm85_data *data = lm85_update_device(dev);
472 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
475 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
476 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
477 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
478 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
479 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
480 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
481 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
482 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
483 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
484 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
485 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
486 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
487 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
488 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
489 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
490 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
491 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
495 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
498 int nr = to_sensor_dev_attr(attr)->index;
499 struct lm85_data *data = lm85_update_device(dev);
500 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
503 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
504 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);
511 mutex_lock(&data->update_lock);
512 data->pwm[nr] = PWM_TO_REG(val);
513 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
514 mutex_unlock(&data->update_lock);
518 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
521 int nr = to_sensor_dev_attr(attr)->index;
522 struct lm85_data *data = lm85_update_device(dev);
523 int pwm_zone, enable;
525 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
527 case -1: /* PWM is always at 100% */
530 case 0: /* PWM is always at 0% */
531 case -2: /* PWM responds to manual control */
534 default: /* PWM in automatic mode */
537 return sprintf(buf, "%d\n", enable);
540 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
541 *attr, const char *buf, size_t count)
543 int nr = to_sensor_dev_attr(attr)->index;
544 struct i2c_client *client = to_i2c_client(dev);
545 struct lm85_data *data = i2c_get_clientdata(client);
546 long val = simple_strtol(buf, NULL, 10);
557 /* Here we have to choose arbitrarily one of the 5 possible
558 configurations; I go for the safest */
565 mutex_lock(&data->update_lock);
566 data->autofan[nr].config = lm85_read_value(client,
567 LM85_REG_AFAN_CONFIG(nr));
568 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
570 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
571 data->autofan[nr].config);
572 mutex_unlock(&data->update_lock);
576 static ssize_t show_pwm_freq(struct device *dev,
577 struct device_attribute *attr, char *buf)
579 int nr = to_sensor_dev_attr(attr)->index;
580 struct lm85_data *data = lm85_update_device(dev);
583 if (IS_ADT7468_HFPWM(data))
586 freq = FREQ_FROM_REG(data->freq_map, data->pwm_freq[nr]);
588 return sprintf(buf, "%d\n", freq);
591 static ssize_t set_pwm_freq(struct device *dev,
592 struct device_attribute *attr, 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 /* The ADT7468 has a special high-frequency PWM output mode,
601 * where all PWM outputs are driven by a 22.5 kHz clock.
602 * This might confuse the user, but there's not much we can do. */
603 if (data->type == adt7468 && val >= 11300) { /* High freq. mode */
604 data->cfg5 &= ~ADT7468_HFPWM;
605 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
606 } else { /* Low freq. mode */
607 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
608 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
609 (data->zone[nr].range << 4)
610 | data->pwm_freq[nr]);
611 if (data->type == adt7468) {
612 data->cfg5 |= ADT7468_HFPWM;
613 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
616 mutex_unlock(&data->update_lock);
620 #define show_pwm_reg(offset) \
621 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
622 show_pwm, set_pwm, offset - 1); \
623 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
624 show_pwm_enable, set_pwm_enable, offset - 1); \
625 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
626 show_pwm_freq, set_pwm_freq, offset - 1)
634 static ssize_t show_in(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", INSEXT_FROM_REG(nr, data->in[nr],
643 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
646 int nr = to_sensor_dev_attr(attr)->index;
647 struct lm85_data *data = lm85_update_device(dev);
648 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
651 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
652 const char *buf, size_t count)
654 int nr = to_sensor_dev_attr(attr)->index;
655 struct i2c_client *client = to_i2c_client(dev);
656 struct lm85_data *data = i2c_get_clientdata(client);
657 long val = simple_strtol(buf, NULL, 10);
659 mutex_lock(&data->update_lock);
660 data->in_min[nr] = INS_TO_REG(nr, val);
661 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
662 mutex_unlock(&data->update_lock);
666 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
669 int nr = to_sensor_dev_attr(attr)->index;
670 struct lm85_data *data = lm85_update_device(dev);
671 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
674 static ssize_t set_in_max(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->in_max[nr] = INS_TO_REG(nr, val);
684 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
685 mutex_unlock(&data->update_lock);
689 #define show_in_reg(offset) \
690 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
691 show_in, NULL, offset); \
692 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
693 show_in_min, set_in_min, offset); \
694 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
695 show_in_max, set_in_max, offset)
708 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
711 int nr = to_sensor_dev_attr(attr)->index;
712 struct lm85_data *data = lm85_update_device(dev);
713 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
714 data->temp_ext[nr]));
717 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
720 int nr = to_sensor_dev_attr(attr)->index;
721 struct lm85_data *data = lm85_update_device(dev);
722 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
725 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
726 const char *buf, size_t count)
728 int nr = to_sensor_dev_attr(attr)->index;
729 struct i2c_client *client = to_i2c_client(dev);
730 struct lm85_data *data = i2c_get_clientdata(client);
731 long val = simple_strtol(buf, NULL, 10);
733 if (IS_ADT7468_OFF64(data))
736 mutex_lock(&data->update_lock);
737 data->temp_min[nr] = TEMP_TO_REG(val);
738 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
739 mutex_unlock(&data->update_lock);
743 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
746 int nr = to_sensor_dev_attr(attr)->index;
747 struct lm85_data *data = lm85_update_device(dev);
748 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
751 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
752 const char *buf, size_t count)
754 int nr = to_sensor_dev_attr(attr)->index;
755 struct i2c_client *client = to_i2c_client(dev);
756 struct lm85_data *data = i2c_get_clientdata(client);
757 long val = simple_strtol(buf, NULL, 10);
759 if (IS_ADT7468_OFF64(data))
762 mutex_lock(&data->update_lock);
763 data->temp_max[nr] = TEMP_TO_REG(val);
764 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
765 mutex_unlock(&data->update_lock);
769 #define show_temp_reg(offset) \
770 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
771 show_temp, NULL, offset - 1); \
772 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
773 show_temp_min, set_temp_min, offset - 1); \
774 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
775 show_temp_max, set_temp_max, offset - 1);
782 /* Automatic PWM control */
784 static ssize_t show_pwm_auto_channels(struct device *dev,
785 struct device_attribute *attr, char *buf)
787 int nr = to_sensor_dev_attr(attr)->index;
788 struct lm85_data *data = lm85_update_device(dev);
789 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
792 static ssize_t set_pwm_auto_channels(struct device *dev,
793 struct device_attribute *attr, const char *buf, size_t count)
795 int nr = to_sensor_dev_attr(attr)->index;
796 struct i2c_client *client = to_i2c_client(dev);
797 struct lm85_data *data = i2c_get_clientdata(client);
798 long val = simple_strtol(buf, NULL, 10);
800 mutex_lock(&data->update_lock);
801 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
803 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
804 data->autofan[nr].config);
805 mutex_unlock(&data->update_lock);
809 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
810 struct device_attribute *attr, char *buf)
812 int nr = to_sensor_dev_attr(attr)->index;
813 struct lm85_data *data = lm85_update_device(dev);
814 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
817 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
818 struct device_attribute *attr, const char *buf, size_t count)
820 int nr = to_sensor_dev_attr(attr)->index;
821 struct i2c_client *client = to_i2c_client(dev);
822 struct lm85_data *data = i2c_get_clientdata(client);
823 long val = simple_strtol(buf, NULL, 10);
825 mutex_lock(&data->update_lock);
826 data->autofan[nr].min_pwm = PWM_TO_REG(val);
827 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
828 data->autofan[nr].min_pwm);
829 mutex_unlock(&data->update_lock);
833 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
834 struct device_attribute *attr, char *buf)
836 int nr = to_sensor_dev_attr(attr)->index;
837 struct lm85_data *data = lm85_update_device(dev);
838 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
841 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
842 struct device_attribute *attr, const char *buf, size_t count)
844 int nr = to_sensor_dev_attr(attr)->index;
845 struct i2c_client *client = to_i2c_client(dev);
846 struct lm85_data *data = i2c_get_clientdata(client);
847 long val = simple_strtol(buf, NULL, 10);
850 mutex_lock(&data->update_lock);
851 data->autofan[nr].min_off = val;
852 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
853 tmp &= ~(0x20 << nr);
854 if (data->autofan[nr].min_off)
856 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
857 mutex_unlock(&data->update_lock);
861 #define pwm_auto(offset) \
862 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
863 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
864 set_pwm_auto_channels, offset - 1); \
865 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
866 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
867 set_pwm_auto_pwm_min, offset - 1); \
868 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
869 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
870 set_pwm_auto_pwm_minctl, offset - 1)
876 /* Temperature settings for automatic PWM control */
878 static ssize_t show_temp_auto_temp_off(struct device *dev,
879 struct device_attribute *attr, char *buf)
881 int nr = to_sensor_dev_attr(attr)->index;
882 struct lm85_data *data = lm85_update_device(dev);
883 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
884 HYST_FROM_REG(data->zone[nr].hyst));
887 static ssize_t set_temp_auto_temp_off(struct device *dev,
888 struct device_attribute *attr, const char *buf, size_t count)
890 int nr = to_sensor_dev_attr(attr)->index;
891 struct i2c_client *client = to_i2c_client(dev);
892 struct lm85_data *data = i2c_get_clientdata(client);
894 long val = simple_strtol(buf, NULL, 10);
896 mutex_lock(&data->update_lock);
897 min = TEMP_FROM_REG(data->zone[nr].limit);
898 data->zone[nr].hyst = HYST_TO_REG(min - val);
899 if (nr == 0 || nr == 1) {
900 lm85_write_value(client, LM85_REG_AFAN_HYST1,
901 (data->zone[0].hyst << 4)
902 | data->zone[1].hyst);
904 lm85_write_value(client, LM85_REG_AFAN_HYST2,
905 (data->zone[2].hyst << 4));
907 mutex_unlock(&data->update_lock);
911 static ssize_t show_temp_auto_temp_min(struct device *dev,
912 struct device_attribute *attr, char *buf)
914 int nr = to_sensor_dev_attr(attr)->index;
915 struct lm85_data *data = lm85_update_device(dev);
916 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
919 static ssize_t set_temp_auto_temp_min(struct device *dev,
920 struct device_attribute *attr, const char *buf, size_t count)
922 int nr = to_sensor_dev_attr(attr)->index;
923 struct i2c_client *client = to_i2c_client(dev);
924 struct lm85_data *data = i2c_get_clientdata(client);
925 long val = simple_strtol(buf, NULL, 10);
927 mutex_lock(&data->update_lock);
928 data->zone[nr].limit = TEMP_TO_REG(val);
929 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
930 data->zone[nr].limit);
932 /* Update temp_auto_max and temp_auto_range */
933 data->zone[nr].range = RANGE_TO_REG(
934 TEMP_FROM_REG(data->zone[nr].max_desired) -
935 TEMP_FROM_REG(data->zone[nr].limit));
936 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
937 ((data->zone[nr].range & 0x0f) << 4)
938 | (data->pwm_freq[nr] & 0x07));
940 mutex_unlock(&data->update_lock);
944 static ssize_t show_temp_auto_temp_max(struct device *dev,
945 struct device_attribute *attr, char *buf)
947 int nr = to_sensor_dev_attr(attr)->index;
948 struct lm85_data *data = lm85_update_device(dev);
949 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
950 RANGE_FROM_REG(data->zone[nr].range));
953 static ssize_t set_temp_auto_temp_max(struct device *dev,
954 struct device_attribute *attr, const char *buf, size_t count)
956 int nr = to_sensor_dev_attr(attr)->index;
957 struct i2c_client *client = to_i2c_client(dev);
958 struct lm85_data *data = i2c_get_clientdata(client);
960 long val = simple_strtol(buf, NULL, 10);
962 mutex_lock(&data->update_lock);
963 min = TEMP_FROM_REG(data->zone[nr].limit);
964 data->zone[nr].max_desired = TEMP_TO_REG(val);
965 data->zone[nr].range = RANGE_TO_REG(
967 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
968 ((data->zone[nr].range & 0x0f) << 4)
969 | (data->pwm_freq[nr] & 0x07));
970 mutex_unlock(&data->update_lock);
974 static ssize_t show_temp_auto_temp_crit(struct device *dev,
975 struct device_attribute *attr, char *buf)
977 int nr = to_sensor_dev_attr(attr)->index;
978 struct lm85_data *data = lm85_update_device(dev);
979 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
982 static ssize_t set_temp_auto_temp_crit(struct device *dev,
983 struct device_attribute *attr, const char *buf, size_t count)
985 int nr = to_sensor_dev_attr(attr)->index;
986 struct i2c_client *client = to_i2c_client(dev);
987 struct lm85_data *data = i2c_get_clientdata(client);
988 long val = simple_strtol(buf, NULL, 10);
990 mutex_lock(&data->update_lock);
991 data->zone[nr].critical = TEMP_TO_REG(val);
992 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
993 data->zone[nr].critical);
994 mutex_unlock(&data->update_lock);
998 #define temp_auto(offset) \
999 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
1000 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
1001 set_temp_auto_temp_off, offset - 1); \
1002 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
1003 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
1004 set_temp_auto_temp_min, offset - 1); \
1005 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
1006 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
1007 set_temp_auto_temp_max, offset - 1); \
1008 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
1009 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
1010 set_temp_auto_temp_crit, offset - 1);
1016 static struct attribute *lm85_attributes[] = {
1017 &sensor_dev_attr_fan1_input.dev_attr.attr,
1018 &sensor_dev_attr_fan2_input.dev_attr.attr,
1019 &sensor_dev_attr_fan3_input.dev_attr.attr,
1020 &sensor_dev_attr_fan4_input.dev_attr.attr,
1021 &sensor_dev_attr_fan1_min.dev_attr.attr,
1022 &sensor_dev_attr_fan2_min.dev_attr.attr,
1023 &sensor_dev_attr_fan3_min.dev_attr.attr,
1024 &sensor_dev_attr_fan4_min.dev_attr.attr,
1025 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1026 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1027 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1028 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1030 &sensor_dev_attr_pwm1.dev_attr.attr,
1031 &sensor_dev_attr_pwm2.dev_attr.attr,
1032 &sensor_dev_attr_pwm3.dev_attr.attr,
1033 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1034 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1035 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1036 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1037 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1038 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1040 &sensor_dev_attr_in0_input.dev_attr.attr,
1041 &sensor_dev_attr_in1_input.dev_attr.attr,
1042 &sensor_dev_attr_in2_input.dev_attr.attr,
1043 &sensor_dev_attr_in3_input.dev_attr.attr,
1044 &sensor_dev_attr_in0_min.dev_attr.attr,
1045 &sensor_dev_attr_in1_min.dev_attr.attr,
1046 &sensor_dev_attr_in2_min.dev_attr.attr,
1047 &sensor_dev_attr_in3_min.dev_attr.attr,
1048 &sensor_dev_attr_in0_max.dev_attr.attr,
1049 &sensor_dev_attr_in1_max.dev_attr.attr,
1050 &sensor_dev_attr_in2_max.dev_attr.attr,
1051 &sensor_dev_attr_in3_max.dev_attr.attr,
1052 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1053 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1054 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1055 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1057 &sensor_dev_attr_temp1_input.dev_attr.attr,
1058 &sensor_dev_attr_temp2_input.dev_attr.attr,
1059 &sensor_dev_attr_temp3_input.dev_attr.attr,
1060 &sensor_dev_attr_temp1_min.dev_attr.attr,
1061 &sensor_dev_attr_temp2_min.dev_attr.attr,
1062 &sensor_dev_attr_temp3_min.dev_attr.attr,
1063 &sensor_dev_attr_temp1_max.dev_attr.attr,
1064 &sensor_dev_attr_temp2_max.dev_attr.attr,
1065 &sensor_dev_attr_temp3_max.dev_attr.attr,
1066 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1067 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1068 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1069 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1070 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1072 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1073 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1074 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1075 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1076 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1077 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1079 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1080 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1081 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1082 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1083 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1084 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1085 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1086 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1087 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1090 &dev_attr_cpu0_vid.attr,
1091 &dev_attr_alarms.attr,
1095 static const struct attribute_group lm85_group = {
1096 .attrs = lm85_attributes,
1099 static struct attribute *lm85_attributes_minctl[] = {
1100 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1101 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1102 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1106 static const struct attribute_group lm85_group_minctl = {
1107 .attrs = lm85_attributes_minctl,
1110 static struct attribute *lm85_attributes_temp_off[] = {
1111 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1112 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1113 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1117 static const struct attribute_group lm85_group_temp_off = {
1118 .attrs = lm85_attributes_temp_off,
1121 static struct attribute *lm85_attributes_in4[] = {
1122 &sensor_dev_attr_in4_input.dev_attr.attr,
1123 &sensor_dev_attr_in4_min.dev_attr.attr,
1124 &sensor_dev_attr_in4_max.dev_attr.attr,
1125 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1129 static const struct attribute_group lm85_group_in4 = {
1130 .attrs = lm85_attributes_in4,
1133 static struct attribute *lm85_attributes_in567[] = {
1134 &sensor_dev_attr_in5_input.dev_attr.attr,
1135 &sensor_dev_attr_in6_input.dev_attr.attr,
1136 &sensor_dev_attr_in7_input.dev_attr.attr,
1137 &sensor_dev_attr_in5_min.dev_attr.attr,
1138 &sensor_dev_attr_in6_min.dev_attr.attr,
1139 &sensor_dev_attr_in7_min.dev_attr.attr,
1140 &sensor_dev_attr_in5_max.dev_attr.attr,
1141 &sensor_dev_attr_in6_max.dev_attr.attr,
1142 &sensor_dev_attr_in7_max.dev_attr.attr,
1143 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1144 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1145 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1149 static const struct attribute_group lm85_group_in567 = {
1150 .attrs = lm85_attributes_in567,
1153 static void lm85_init_client(struct i2c_client *client)
1157 /* Start monitoring if needed */
1158 value = lm85_read_value(client, LM85_REG_CONFIG);
1159 if (!(value & 0x01)) {
1160 dev_info(&client->dev, "Starting monitoring\n");
1161 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1164 /* Warn about unusual configuration bits */
1166 dev_warn(&client->dev, "Device configuration is locked\n");
1167 if (!(value & 0x04))
1168 dev_warn(&client->dev, "Device is not ready\n");
1171 static int lm85_is_fake(struct i2c_client *client)
1174 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1175 * emulate the former except that it has no hardware monitoring function
1176 * so the readings are always 0.
1181 for (i = 0; i < 8; i++) {
1182 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1183 fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1184 if (in_temp != 0x00 || fan != 0xff)
1191 /* Return 0 if detection is successful, -ENODEV otherwise */
1192 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
1194 struct i2c_adapter *adapter = client->adapter;
1195 int address = client->addr;
1196 const char *type_name;
1197 int company, verstep;
1199 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1200 /* We need to be able to do byte I/O */
1204 /* Determine the chip type */
1205 company = lm85_read_value(client, LM85_REG_COMPANY);
1206 verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1208 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
1209 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1210 address, company, verstep);
1212 /* All supported chips have the version in common */
1213 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC &&
1214 (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) {
1215 dev_dbg(&adapter->dev,
1216 "Autodetection failed: unsupported version\n");
1221 /* Now, refine the detection */
1222 if (company == LM85_COMPANY_NATIONAL) {
1224 case LM85_VERSTEP_LM85C:
1225 type_name = "lm85c";
1227 case LM85_VERSTEP_LM85B:
1228 type_name = "lm85b";
1230 case LM85_VERSTEP_LM96000_1:
1231 case LM85_VERSTEP_LM96000_2:
1232 /* Check for Winbond WPCD377I */
1233 if (lm85_is_fake(client)) {
1234 dev_dbg(&adapter->dev,
1235 "Found Winbond WPCD377I, ignoring\n");
1240 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1242 case LM85_VERSTEP_ADM1027:
1243 type_name = "adm1027";
1245 case LM85_VERSTEP_ADT7463:
1246 case LM85_VERSTEP_ADT7463C:
1247 type_name = "adt7463";
1249 case LM85_VERSTEP_ADT7468_1:
1250 case LM85_VERSTEP_ADT7468_2:
1251 type_name = "adt7468";
1254 } else if (company == LM85_COMPANY_SMSC) {
1256 case LM85_VERSTEP_EMC6D100_A0:
1257 case LM85_VERSTEP_EMC6D100_A1:
1258 /* Note: we can't tell a '100 from a '101 */
1259 type_name = "emc6d100";
1261 case LM85_VERSTEP_EMC6D102:
1262 type_name = "emc6d102";
1264 case LM85_VERSTEP_EMC6D103_A0:
1265 case LM85_VERSTEP_EMC6D103_A1:
1266 type_name = "emc6d103";
1268 case LM85_VERSTEP_EMC6D103S:
1269 type_name = "emc6d103s";
1273 dev_dbg(&adapter->dev,
1274 "Autodetection failed: unknown vendor\n");
1278 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1283 static void lm85_remove_files(struct i2c_client *client, struct lm85_data *data)
1285 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1286 if (data->type != emc6d103s) {
1287 sysfs_remove_group(&client->dev.kobj, &lm85_group_minctl);
1288 sysfs_remove_group(&client->dev.kobj, &lm85_group_temp_off);
1290 if (!data->has_vid5)
1291 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1292 if (data->type == emc6d100)
1293 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1296 static int lm85_probe(struct i2c_client *client,
1297 const struct i2c_device_id *id)
1299 struct lm85_data *data;
1302 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
1306 i2c_set_clientdata(client, data);
1307 data->type = id->driver_data;
1308 mutex_init(&data->update_lock);
1310 /* Fill in the chip specific driver values */
1311 switch (data->type) {
1319 data->freq_map = adm1027_freq_map;
1322 data->freq_map = lm85_freq_map;
1325 /* Set the VRM version */
1326 data->vrm = vid_which_vrm();
1328 /* Initialize the LM85 chip */
1329 lm85_init_client(client);
1331 /* Register sysfs hooks */
1332 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1336 /* minctl and temp_off exist on all chips except emc6d103s */
1337 if (data->type != emc6d103s) {
1338 err = sysfs_create_group(&client->dev.kobj, &lm85_group_minctl);
1340 goto err_remove_files;
1341 err = sysfs_create_group(&client->dev.kobj,
1342 &lm85_group_temp_off);
1344 goto err_remove_files;
1347 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1348 as a sixth digital VID input rather than an analog input. */
1349 if (data->type == adt7463 || data->type == adt7468) {
1350 u8 vid = lm85_read_value(client, LM85_REG_VID);
1352 data->has_vid5 = true;
1355 if (!data->has_vid5)
1356 if ((err = sysfs_create_group(&client->dev.kobj,
1358 goto err_remove_files;
1360 /* The EMC6D100 has 3 additional voltage inputs */
1361 if (data->type == emc6d100)
1362 if ((err = sysfs_create_group(&client->dev.kobj,
1363 &lm85_group_in567)))
1364 goto err_remove_files;
1366 data->hwmon_dev = hwmon_device_register(&client->dev);
1367 if (IS_ERR(data->hwmon_dev)) {
1368 err = PTR_ERR(data->hwmon_dev);
1369 goto err_remove_files;
1374 /* Error out and cleanup code */
1376 lm85_remove_files(client, data);
1382 static int lm85_remove(struct i2c_client *client)
1384 struct lm85_data *data = i2c_get_clientdata(client);
1385 hwmon_device_unregister(data->hwmon_dev);
1386 lm85_remove_files(client, data);
1392 static int lm85_read_value(struct i2c_client *client, u8 reg)
1396 /* What size location is it? */
1398 case LM85_REG_FAN(0): /* Read WORD data */
1399 case LM85_REG_FAN(1):
1400 case LM85_REG_FAN(2):
1401 case LM85_REG_FAN(3):
1402 case LM85_REG_FAN_MIN(0):
1403 case LM85_REG_FAN_MIN(1):
1404 case LM85_REG_FAN_MIN(2):
1405 case LM85_REG_FAN_MIN(3):
1406 case LM85_REG_ALARM1: /* Read both bytes at once */
1407 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1408 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1410 default: /* Read BYTE data */
1411 res = i2c_smbus_read_byte_data(client, reg);
1418 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1421 case LM85_REG_FAN(0): /* Write WORD data */
1422 case LM85_REG_FAN(1):
1423 case LM85_REG_FAN(2):
1424 case LM85_REG_FAN(3):
1425 case LM85_REG_FAN_MIN(0):
1426 case LM85_REG_FAN_MIN(1):
1427 case LM85_REG_FAN_MIN(2):
1428 case LM85_REG_FAN_MIN(3):
1429 /* NOTE: ALARM is read only, so not included here */
1430 i2c_smbus_write_byte_data(client, reg, value & 0xff);
1431 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1433 default: /* Write BYTE data */
1434 i2c_smbus_write_byte_data(client, reg, value);
1439 static struct lm85_data *lm85_update_device(struct device *dev)
1441 struct i2c_client *client = to_i2c_client(dev);
1442 struct lm85_data *data = i2c_get_clientdata(client);
1445 mutex_lock(&data->update_lock);
1448 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1449 /* Things that change quickly */
1450 dev_dbg(&client->dev, "Reading sensor values\n");
1452 /* Have to read extended bits first to "freeze" the
1453 * more significant bits that are read later.
1454 * There are 2 additional resolution bits per channel and we
1455 * have room for 4, so we shift them to the left.
1457 if (data->type == adm1027 || data->type == adt7463 ||
1458 data->type == adt7468) {
1459 int ext1 = lm85_read_value(client,
1460 ADM1027_REG_EXTEND_ADC1);
1461 int ext2 = lm85_read_value(client,
1462 ADM1027_REG_EXTEND_ADC2);
1463 int val = (ext1 << 8) + ext2;
1465 for (i = 0; i <= 4; i++)
1467 ((val >> (i * 2)) & 0x03) << 2;
1469 for (i = 0; i <= 2; i++)
1471 (val >> ((i + 4) * 2)) & 0x0c;
1474 data->vid = lm85_read_value(client, LM85_REG_VID);
1476 for (i = 0; i <= 3; ++i) {
1478 lm85_read_value(client, LM85_REG_IN(i));
1480 lm85_read_value(client, LM85_REG_FAN(i));
1483 if (!data->has_vid5)
1484 data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
1486 if (data->type == adt7468)
1487 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
1489 for (i = 0; i <= 2; ++i) {
1491 lm85_read_value(client, LM85_REG_TEMP(i));
1493 lm85_read_value(client, LM85_REG_PWM(i));
1495 if (IS_ADT7468_OFF64(data))
1496 data->temp[i] -= 64;
1499 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1501 if (data->type == emc6d100) {
1502 /* Three more voltage sensors */
1503 for (i = 5; i <= 7; ++i) {
1504 data->in[i] = lm85_read_value(client,
1505 EMC6D100_REG_IN(i));
1507 /* More alarm bits */
1508 data->alarms |= lm85_read_value(client,
1509 EMC6D100_REG_ALARM3) << 16;
1510 } else if (data->type == emc6d102 || data->type == emc6d103 ||
1511 data->type == emc6d103s) {
1512 /* Have to read LSB bits after the MSB ones because
1513 the reading of the MSB bits has frozen the
1514 LSBs (backward from the ADM1027).
1516 int ext1 = lm85_read_value(client,
1517 EMC6D102_REG_EXTEND_ADC1);
1518 int ext2 = lm85_read_value(client,
1519 EMC6D102_REG_EXTEND_ADC2);
1520 int ext3 = lm85_read_value(client,
1521 EMC6D102_REG_EXTEND_ADC3);
1522 int ext4 = lm85_read_value(client,
1523 EMC6D102_REG_EXTEND_ADC4);
1524 data->in_ext[0] = ext3 & 0x0f;
1525 data->in_ext[1] = ext4 & 0x0f;
1526 data->in_ext[2] = ext4 >> 4;
1527 data->in_ext[3] = ext3 >> 4;
1528 data->in_ext[4] = ext2 >> 4;
1530 data->temp_ext[0] = ext1 & 0x0f;
1531 data->temp_ext[1] = ext2 & 0x0f;
1532 data->temp_ext[2] = ext1 >> 4;
1535 data->last_reading = jiffies;
1536 } /* last_reading */
1539 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1540 /* Things that don't change often */
1541 dev_dbg(&client->dev, "Reading config values\n");
1543 for (i = 0; i <= 3; ++i) {
1545 lm85_read_value(client, LM85_REG_IN_MIN(i));
1547 lm85_read_value(client, LM85_REG_IN_MAX(i));
1549 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1552 if (!data->has_vid5) {
1553 data->in_min[4] = lm85_read_value(client,
1554 LM85_REG_IN_MIN(4));
1555 data->in_max[4] = lm85_read_value(client,
1556 LM85_REG_IN_MAX(4));
1559 if (data->type == emc6d100) {
1560 for (i = 5; i <= 7; ++i) {
1561 data->in_min[i] = lm85_read_value(client,
1562 EMC6D100_REG_IN_MIN(i));
1563 data->in_max[i] = lm85_read_value(client,
1564 EMC6D100_REG_IN_MAX(i));
1568 for (i = 0; i <= 2; ++i) {
1572 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1574 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1576 data->autofan[i].config =
1577 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1578 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1579 data->pwm_freq[i] = val & 0x07;
1580 data->zone[i].range = val >> 4;
1581 data->autofan[i].min_pwm =
1582 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1583 data->zone[i].limit =
1584 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1585 data->zone[i].critical =
1586 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1588 if (IS_ADT7468_OFF64(data)) {
1589 data->temp_min[i] -= 64;
1590 data->temp_max[i] -= 64;
1591 data->zone[i].limit -= 64;
1592 data->zone[i].critical -= 64;
1596 if (data->type != emc6d103s) {
1597 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1598 data->autofan[0].min_off = (i & 0x20) != 0;
1599 data->autofan[1].min_off = (i & 0x40) != 0;
1600 data->autofan[2].min_off = (i & 0x80) != 0;
1602 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1603 data->zone[0].hyst = i >> 4;
1604 data->zone[1].hyst = i & 0x0f;
1606 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1607 data->zone[2].hyst = i >> 4;
1610 data->last_config = jiffies;
1615 mutex_unlock(&data->update_lock);
1621 static int __init sm_lm85_init(void)
1623 return i2c_add_driver(&lm85_driver);
1626 static void __exit sm_lm85_exit(void)
1628 i2c_del_driver(&lm85_driver);
1631 MODULE_LICENSE("GPL");
1632 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1633 "Margit Schubert-While <margitsw@t-online.de>, "
1634 "Justin Thiessen <jthiessen@penguincomputing.com>");
1635 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1637 module_init(sm_lm85_init);
1638 module_exit(sm_lm85_exit);