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--2014 Jean Delvare <jdelvare@suse.de>
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 };
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_LM85C 0x60
79 #define LM85_VERSTEP_LM85B 0x62
80 #define LM85_VERSTEP_LM96000_1 0x68
81 #define LM85_VERSTEP_LM96000_2 0x69
82 #define LM85_VERSTEP_ADM1027 0x60
83 #define LM85_VERSTEP_ADT7463 0x62
84 #define LM85_VERSTEP_ADT7463C 0x6A
85 #define LM85_VERSTEP_ADT7468_1 0x71
86 #define LM85_VERSTEP_ADT7468_2 0x72
87 #define LM85_VERSTEP_EMC6D100_A0 0x60
88 #define LM85_VERSTEP_EMC6D100_A1 0x61
89 #define LM85_VERSTEP_EMC6D102 0x65
90 #define LM85_VERSTEP_EMC6D103_A0 0x68
91 #define LM85_VERSTEP_EMC6D103_A1 0x69
92 #define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
94 #define LM85_REG_CONFIG 0x40
96 #define LM85_REG_ALARM1 0x41
97 #define LM85_REG_ALARM2 0x42
99 #define LM85_REG_VID 0x43
101 /* Automated FAN control */
102 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
103 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
104 #define LM85_REG_AFAN_SPIKE1 0x62
105 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
106 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
107 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
108 #define LM85_REG_AFAN_HYST1 0x6d
109 #define LM85_REG_AFAN_HYST2 0x6e
111 #define ADM1027_REG_EXTEND_ADC1 0x76
112 #define ADM1027_REG_EXTEND_ADC2 0x77
114 #define EMC6D100_REG_ALARM3 0x7d
115 /* IN5, IN6 and IN7 */
116 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
117 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
118 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
119 #define EMC6D102_REG_EXTEND_ADC1 0x85
120 #define EMC6D102_REG_EXTEND_ADC2 0x86
121 #define EMC6D102_REG_EXTEND_ADC3 0x87
122 #define EMC6D102_REG_EXTEND_ADC4 0x88
125 * Conversions. Rounding and limit checking is only done on the TO_REG
126 * variants. Note that you should be a bit careful with which arguments
127 * these macros are called: arguments may be evaluated more than once.
130 /* IN are scaled according to built-in resistors */
131 static const int lm85_scaling[] = { /* .001 Volts */
132 2500, 2250, 3300, 5000, 12000,
133 3300, 1500, 1800 /*EMC6D100*/
135 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
137 #define INS_TO_REG(n, val) \
138 clamp_val(SCALE(val, lm85_scaling[n], 192), 0, 255)
140 #define INSEXT_FROM_REG(n, val, ext) \
141 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
143 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
145 /* FAN speed is measured using 90kHz clock */
146 static inline u16 FAN_TO_REG(unsigned long val)
150 return clamp_val(5400000 / val, 1, 0xfffe);
152 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
155 /* Temperature is reported in .001 degC increments */
156 #define TEMP_TO_REG(val) \
157 DIV_ROUND_CLOSEST(clamp_val((val), -127000, 127000), 1000)
158 #define TEMPEXT_FROM_REG(val, ext) \
159 SCALE(((val) << 4) + (ext), 16, 1000)
160 #define TEMP_FROM_REG(val) ((val) * 1000)
162 #define PWM_TO_REG(val) clamp_val(val, 0, 255)
163 #define PWM_FROM_REG(val) (val)
167 * ZONEs have the following parameters:
168 * Limit (low) temp, 1. degC
169 * Hysteresis (below limit), 1. degC (0-15)
170 * Range of speed control, .1 degC (2-80)
171 * Critical (high) temp, 1. degC
173 * FAN PWMs have the following parameters:
174 * Reference Zone, 1, 2, 3, etc.
175 * Spinup time, .05 sec
176 * PWM value at limit/low temp, 1 count
177 * PWM Frequency, 1. Hz
178 * PWM is Min or OFF below limit, flag
179 * Invert PWM output, flag
181 * Some chips filter the temp, others the fan.
182 * Filter constant (or disabled) .1 seconds
185 /* These are the zone temperature range encodings in .001 degree C */
186 static const int lm85_range_map[] = {
187 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
188 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
191 static int RANGE_TO_REG(long range)
195 /* Find the closest match */
196 for (i = 0; i < 15; ++i) {
197 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
203 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
205 /* These are the PWM frequency encodings */
206 static const int lm85_freq_map[8] = { /* 1 Hz */
207 10, 15, 23, 30, 38, 47, 61, 94
209 static const int adm1027_freq_map[8] = { /* 1 Hz */
210 11, 15, 22, 29, 35, 44, 59, 88
213 static int FREQ_TO_REG(const int *map, unsigned long freq)
217 /* Find the closest match */
218 for (i = 0; i < 7; ++i)
219 if (freq <= (map[i] + map[i + 1]) / 2)
224 static int FREQ_FROM_REG(const int *map, u8 reg)
226 return map[reg & 0x07];
230 * Since we can't use strings, I'm abusing these numbers
231 * to stand in for the following meanings:
232 * 1 -- PWM responds to Zone 1
233 * 2 -- PWM responds to Zone 2
234 * 3 -- PWM responds to Zone 3
235 * 23 -- PWM responds to the higher temp of Zone 2 or 3
236 * 123 -- PWM responds to highest of Zone 1, 2, or 3
237 * 0 -- PWM is always at 0% (ie, off)
238 * -1 -- PWM is always at 100%
239 * -2 -- PWM responds to manual control
242 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
243 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
245 static int ZONE_TO_REG(int zone)
249 for (i = 0; i <= 7; ++i)
250 if (zone == lm85_zone_map[i])
252 if (i > 7) /* Not found. */
253 i = 3; /* Always 100% */
257 #define HYST_TO_REG(val) clamp_val(((val) + 500) / 1000, 0, 15)
258 #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)
278 * LM85 can automatically adjust fan speeds based on temperature
279 * This structure encapsulates an entire Zone config. There are
280 * three zones (one for each temperature input) on the lm85
283 s8 limit; /* Low temp limit */
284 u8 hyst; /* Low limit hysteresis. (0-15) */
285 u8 range; /* Temp range, encoded */
286 s8 critical; /* "All fans ON" temp limit */
288 * Actual "max" temperature specified. Preserved
289 * to prevent "drift" as other autofan control
294 struct lm85_autofan {
295 u8 config; /* Register value */
296 u8 min_pwm; /* Minimum PWM value, encoded */
297 u8 min_off; /* Min PWM or OFF below "limit", flag */
301 * For each registered chip, we need to keep some data in memory.
302 * The structure is dynamically allocated.
305 struct device *hwmon_dev;
309 bool has_vid5; /* true if VID5 is configured for ADT7463 or ADT7468 */
311 struct mutex update_lock;
312 int valid; /* !=0 if following fields are valid */
313 unsigned long last_reading; /* In jiffies */
314 unsigned long last_config; /* In jiffies */
316 u8 in[8]; /* Register value */
317 u8 in_max[8]; /* Register value */
318 u8 in_min[8]; /* Register value */
319 s8 temp[3]; /* Register value */
320 s8 temp_min[3]; /* Register value */
321 s8 temp_max[3]; /* Register value */
322 u16 fan[4]; /* Register value */
323 u16 fan_min[4]; /* Register value */
324 u8 pwm[3]; /* Register value */
325 u8 pwm_freq[3]; /* Register encoding */
326 u8 temp_ext[3]; /* Decoded values */
327 u8 in_ext[8]; /* Decoded values */
328 u8 vid; /* Register value */
329 u8 vrm; /* VRM version */
330 u32 alarms; /* Register encoding, combined */
331 u8 cfg5; /* Config Register 5 on ADT7468 */
332 struct lm85_autofan autofan[3];
333 struct lm85_zone zone[3];
336 static int lm85_read_value(struct i2c_client *client, u8 reg)
340 /* What size location is it? */
342 case LM85_REG_FAN(0): /* Read WORD data */
343 case LM85_REG_FAN(1):
344 case LM85_REG_FAN(2):
345 case LM85_REG_FAN(3):
346 case LM85_REG_FAN_MIN(0):
347 case LM85_REG_FAN_MIN(1):
348 case LM85_REG_FAN_MIN(2):
349 case LM85_REG_FAN_MIN(3):
350 case LM85_REG_ALARM1: /* Read both bytes at once */
351 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
352 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
354 default: /* Read BYTE data */
355 res = i2c_smbus_read_byte_data(client, reg);
362 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
365 case LM85_REG_FAN(0): /* Write WORD data */
366 case LM85_REG_FAN(1):
367 case LM85_REG_FAN(2):
368 case LM85_REG_FAN(3):
369 case LM85_REG_FAN_MIN(0):
370 case LM85_REG_FAN_MIN(1):
371 case LM85_REG_FAN_MIN(2):
372 case LM85_REG_FAN_MIN(3):
373 /* NOTE: ALARM is read only, so not included here */
374 i2c_smbus_write_byte_data(client, reg, value & 0xff);
375 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
377 default: /* Write BYTE data */
378 i2c_smbus_write_byte_data(client, reg, value);
383 static struct lm85_data *lm85_update_device(struct device *dev)
385 struct i2c_client *client = to_i2c_client(dev);
386 struct lm85_data *data = i2c_get_clientdata(client);
389 mutex_lock(&data->update_lock);
392 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
393 /* Things that change quickly */
394 dev_dbg(&client->dev, "Reading sensor values\n");
397 * Have to read extended bits first to "freeze" the
398 * more significant bits that are read later.
399 * There are 2 additional resolution bits per channel and we
400 * have room for 4, so we shift them to the left.
402 if (data->type == adm1027 || data->type == adt7463 ||
403 data->type == adt7468) {
404 int ext1 = lm85_read_value(client,
405 ADM1027_REG_EXTEND_ADC1);
406 int ext2 = lm85_read_value(client,
407 ADM1027_REG_EXTEND_ADC2);
408 int val = (ext1 << 8) + ext2;
410 for (i = 0; i <= 4; i++)
412 ((val >> (i * 2)) & 0x03) << 2;
414 for (i = 0; i <= 2; i++)
416 (val >> ((i + 4) * 2)) & 0x0c;
419 data->vid = lm85_read_value(client, LM85_REG_VID);
421 for (i = 0; i <= 3; ++i) {
423 lm85_read_value(client, LM85_REG_IN(i));
425 lm85_read_value(client, LM85_REG_FAN(i));
429 data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
431 if (data->type == adt7468)
432 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
434 for (i = 0; i <= 2; ++i) {
436 lm85_read_value(client, LM85_REG_TEMP(i));
438 lm85_read_value(client, LM85_REG_PWM(i));
440 if (IS_ADT7468_OFF64(data))
444 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
446 if (data->type == emc6d100) {
447 /* Three more voltage sensors */
448 for (i = 5; i <= 7; ++i) {
449 data->in[i] = lm85_read_value(client,
452 /* More alarm bits */
453 data->alarms |= lm85_read_value(client,
454 EMC6D100_REG_ALARM3) << 16;
455 } else if (data->type == emc6d102 || data->type == emc6d103 ||
456 data->type == emc6d103s) {
458 * Have to read LSB bits after the MSB ones because
459 * the reading of the MSB bits has frozen the
460 * LSBs (backward from the ADM1027).
462 int ext1 = lm85_read_value(client,
463 EMC6D102_REG_EXTEND_ADC1);
464 int ext2 = lm85_read_value(client,
465 EMC6D102_REG_EXTEND_ADC2);
466 int ext3 = lm85_read_value(client,
467 EMC6D102_REG_EXTEND_ADC3);
468 int ext4 = lm85_read_value(client,
469 EMC6D102_REG_EXTEND_ADC4);
470 data->in_ext[0] = ext3 & 0x0f;
471 data->in_ext[1] = ext4 & 0x0f;
472 data->in_ext[2] = ext4 >> 4;
473 data->in_ext[3] = ext3 >> 4;
474 data->in_ext[4] = ext2 >> 4;
476 data->temp_ext[0] = ext1 & 0x0f;
477 data->temp_ext[1] = ext2 & 0x0f;
478 data->temp_ext[2] = ext1 >> 4;
481 data->last_reading = jiffies;
485 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
486 /* Things that don't change often */
487 dev_dbg(&client->dev, "Reading config values\n");
489 for (i = 0; i <= 3; ++i) {
491 lm85_read_value(client, LM85_REG_IN_MIN(i));
493 lm85_read_value(client, LM85_REG_IN_MAX(i));
495 lm85_read_value(client, LM85_REG_FAN_MIN(i));
498 if (!data->has_vid5) {
499 data->in_min[4] = lm85_read_value(client,
501 data->in_max[4] = lm85_read_value(client,
505 if (data->type == emc6d100) {
506 for (i = 5; i <= 7; ++i) {
507 data->in_min[i] = lm85_read_value(client,
508 EMC6D100_REG_IN_MIN(i));
509 data->in_max[i] = lm85_read_value(client,
510 EMC6D100_REG_IN_MAX(i));
514 for (i = 0; i <= 2; ++i) {
518 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
520 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
522 data->autofan[i].config =
523 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
524 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
525 data->pwm_freq[i] = val & 0x07;
526 data->zone[i].range = val >> 4;
527 data->autofan[i].min_pwm =
528 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
529 data->zone[i].limit =
530 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
531 data->zone[i].critical =
532 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
534 if (IS_ADT7468_OFF64(data)) {
535 data->temp_min[i] -= 64;
536 data->temp_max[i] -= 64;
537 data->zone[i].limit -= 64;
538 data->zone[i].critical -= 64;
542 if (data->type != emc6d103s) {
543 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
544 data->autofan[0].min_off = (i & 0x20) != 0;
545 data->autofan[1].min_off = (i & 0x40) != 0;
546 data->autofan[2].min_off = (i & 0x80) != 0;
548 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
549 data->zone[0].hyst = i >> 4;
550 data->zone[1].hyst = i & 0x0f;
552 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
553 data->zone[2].hyst = i >> 4;
556 data->last_config = jiffies;
561 mutex_unlock(&data->update_lock);
567 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
570 int nr = to_sensor_dev_attr(attr)->index;
571 struct lm85_data *data = lm85_update_device(dev);
572 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
575 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
578 int nr = to_sensor_dev_attr(attr)->index;
579 struct lm85_data *data = lm85_update_device(dev);
580 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
583 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
584 const char *buf, size_t count)
586 int nr = to_sensor_dev_attr(attr)->index;
587 struct i2c_client *client = to_i2c_client(dev);
588 struct lm85_data *data = i2c_get_clientdata(client);
592 err = kstrtoul(buf, 10, &val);
596 mutex_lock(&data->update_lock);
597 data->fan_min[nr] = FAN_TO_REG(val);
598 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
599 mutex_unlock(&data->update_lock);
603 #define show_fan_offset(offset) \
604 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
605 show_fan, NULL, offset - 1); \
606 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
607 show_fan_min, set_fan_min, offset - 1)
614 /* vid, vrm, alarms */
616 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
619 struct lm85_data *data = lm85_update_device(dev);
622 if (data->has_vid5) {
623 /* 6-pin VID (VRM 10) */
624 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
626 /* 5-pin VID (VRM 9) */
627 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
630 return sprintf(buf, "%d\n", vid);
633 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
635 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
638 struct lm85_data *data = dev_get_drvdata(dev);
639 return sprintf(buf, "%ld\n", (long) data->vrm);
642 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
643 const char *buf, size_t count)
645 struct lm85_data *data = dev_get_drvdata(dev);
649 err = kstrtoul(buf, 10, &val);
660 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
662 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
665 struct lm85_data *data = lm85_update_device(dev);
666 return sprintf(buf, "%u\n", data->alarms);
669 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
671 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
674 int nr = to_sensor_dev_attr(attr)->index;
675 struct lm85_data *data = lm85_update_device(dev);
676 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
679 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
680 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
681 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
682 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
683 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
684 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
685 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
686 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
687 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
688 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
689 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
690 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
691 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
692 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
693 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
694 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
695 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
699 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
702 int nr = to_sensor_dev_attr(attr)->index;
703 struct lm85_data *data = lm85_update_device(dev);
704 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
707 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
708 const char *buf, size_t count)
710 int nr = to_sensor_dev_attr(attr)->index;
711 struct i2c_client *client = to_i2c_client(dev);
712 struct lm85_data *data = i2c_get_clientdata(client);
716 err = kstrtoul(buf, 10, &val);
720 mutex_lock(&data->update_lock);
721 data->pwm[nr] = PWM_TO_REG(val);
722 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
723 mutex_unlock(&data->update_lock);
727 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
730 int nr = to_sensor_dev_attr(attr)->index;
731 struct lm85_data *data = lm85_update_device(dev);
732 int pwm_zone, enable;
734 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
736 case -1: /* PWM is always at 100% */
739 case 0: /* PWM is always at 0% */
740 case -2: /* PWM responds to manual control */
743 default: /* PWM in automatic mode */
746 return sprintf(buf, "%d\n", enable);
749 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
750 *attr, const char *buf, size_t count)
752 int nr = to_sensor_dev_attr(attr)->index;
753 struct i2c_client *client = to_i2c_client(dev);
754 struct lm85_data *data = i2c_get_clientdata(client);
759 err = kstrtoul(buf, 10, &val);
772 * Here we have to choose arbitrarily one of the 5 possible
773 * configurations; I go for the safest
781 mutex_lock(&data->update_lock);
782 data->autofan[nr].config = lm85_read_value(client,
783 LM85_REG_AFAN_CONFIG(nr));
784 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
786 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
787 data->autofan[nr].config);
788 mutex_unlock(&data->update_lock);
792 static ssize_t show_pwm_freq(struct device *dev,
793 struct device_attribute *attr, char *buf)
795 int nr = to_sensor_dev_attr(attr)->index;
796 struct lm85_data *data = lm85_update_device(dev);
799 if (IS_ADT7468_HFPWM(data))
802 freq = FREQ_FROM_REG(data->freq_map, data->pwm_freq[nr]);
804 return sprintf(buf, "%d\n", freq);
807 static ssize_t set_pwm_freq(struct device *dev,
808 struct device_attribute *attr, const char *buf, size_t count)
810 int nr = to_sensor_dev_attr(attr)->index;
811 struct i2c_client *client = to_i2c_client(dev);
812 struct lm85_data *data = i2c_get_clientdata(client);
816 err = kstrtoul(buf, 10, &val);
820 mutex_lock(&data->update_lock);
822 * The ADT7468 has a special high-frequency PWM output mode,
823 * where all PWM outputs are driven by a 22.5 kHz clock.
824 * This might confuse the user, but there's not much we can do.
826 if (data->type == adt7468 && val >= 11300) { /* High freq. mode */
827 data->cfg5 &= ~ADT7468_HFPWM;
828 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
829 } else { /* Low freq. mode */
830 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
831 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
832 (data->zone[nr].range << 4)
833 | data->pwm_freq[nr]);
834 if (data->type == adt7468) {
835 data->cfg5 |= ADT7468_HFPWM;
836 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
839 mutex_unlock(&data->update_lock);
843 #define show_pwm_reg(offset) \
844 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
845 show_pwm, set_pwm, offset - 1); \
846 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
847 show_pwm_enable, set_pwm_enable, offset - 1); \
848 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
849 show_pwm_freq, set_pwm_freq, offset - 1)
857 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
860 int nr = to_sensor_dev_attr(attr)->index;
861 struct lm85_data *data = lm85_update_device(dev);
862 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
866 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
869 int nr = to_sensor_dev_attr(attr)->index;
870 struct lm85_data *data = lm85_update_device(dev);
871 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
874 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
875 const char *buf, size_t count)
877 int nr = to_sensor_dev_attr(attr)->index;
878 struct i2c_client *client = to_i2c_client(dev);
879 struct lm85_data *data = i2c_get_clientdata(client);
883 err = kstrtol(buf, 10, &val);
887 mutex_lock(&data->update_lock);
888 data->in_min[nr] = INS_TO_REG(nr, val);
889 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
890 mutex_unlock(&data->update_lock);
894 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
897 int nr = to_sensor_dev_attr(attr)->index;
898 struct lm85_data *data = lm85_update_device(dev);
899 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
902 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
903 const char *buf, size_t count)
905 int nr = to_sensor_dev_attr(attr)->index;
906 struct i2c_client *client = to_i2c_client(dev);
907 struct lm85_data *data = i2c_get_clientdata(client);
911 err = kstrtol(buf, 10, &val);
915 mutex_lock(&data->update_lock);
916 data->in_max[nr] = INS_TO_REG(nr, val);
917 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
918 mutex_unlock(&data->update_lock);
922 #define show_in_reg(offset) \
923 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
924 show_in, NULL, offset); \
925 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
926 show_in_min, set_in_min, offset); \
927 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
928 show_in_max, set_in_max, offset)
941 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
944 int nr = to_sensor_dev_attr(attr)->index;
945 struct lm85_data *data = lm85_update_device(dev);
946 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
947 data->temp_ext[nr]));
950 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
953 int nr = to_sensor_dev_attr(attr)->index;
954 struct lm85_data *data = lm85_update_device(dev);
955 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
958 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
959 const char *buf, size_t count)
961 int nr = to_sensor_dev_attr(attr)->index;
962 struct i2c_client *client = to_i2c_client(dev);
963 struct lm85_data *data = i2c_get_clientdata(client);
967 err = kstrtol(buf, 10, &val);
971 if (IS_ADT7468_OFF64(data))
974 mutex_lock(&data->update_lock);
975 data->temp_min[nr] = TEMP_TO_REG(val);
976 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
977 mutex_unlock(&data->update_lock);
981 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
984 int nr = to_sensor_dev_attr(attr)->index;
985 struct lm85_data *data = lm85_update_device(dev);
986 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
989 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
990 const char *buf, size_t count)
992 int nr = to_sensor_dev_attr(attr)->index;
993 struct i2c_client *client = to_i2c_client(dev);
994 struct lm85_data *data = i2c_get_clientdata(client);
998 err = kstrtol(buf, 10, &val);
1002 if (IS_ADT7468_OFF64(data))
1005 mutex_lock(&data->update_lock);
1006 data->temp_max[nr] = TEMP_TO_REG(val);
1007 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
1008 mutex_unlock(&data->update_lock);
1012 #define show_temp_reg(offset) \
1013 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
1014 show_temp, NULL, offset - 1); \
1015 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
1016 show_temp_min, set_temp_min, offset - 1); \
1017 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
1018 show_temp_max, set_temp_max, offset - 1);
1025 /* Automatic PWM control */
1027 static ssize_t show_pwm_auto_channels(struct device *dev,
1028 struct device_attribute *attr, char *buf)
1030 int nr = to_sensor_dev_attr(attr)->index;
1031 struct lm85_data *data = lm85_update_device(dev);
1032 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
1035 static ssize_t set_pwm_auto_channels(struct device *dev,
1036 struct device_attribute *attr, const char *buf, size_t count)
1038 int nr = to_sensor_dev_attr(attr)->index;
1039 struct i2c_client *client = to_i2c_client(dev);
1040 struct lm85_data *data = i2c_get_clientdata(client);
1044 err = kstrtol(buf, 10, &val);
1048 mutex_lock(&data->update_lock);
1049 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
1051 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
1052 data->autofan[nr].config);
1053 mutex_unlock(&data->update_lock);
1057 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
1058 struct device_attribute *attr, char *buf)
1060 int nr = to_sensor_dev_attr(attr)->index;
1061 struct lm85_data *data = lm85_update_device(dev);
1062 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
1065 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
1066 struct device_attribute *attr, const char *buf, size_t count)
1068 int nr = to_sensor_dev_attr(attr)->index;
1069 struct i2c_client *client = to_i2c_client(dev);
1070 struct lm85_data *data = i2c_get_clientdata(client);
1074 err = kstrtoul(buf, 10, &val);
1078 mutex_lock(&data->update_lock);
1079 data->autofan[nr].min_pwm = PWM_TO_REG(val);
1080 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
1081 data->autofan[nr].min_pwm);
1082 mutex_unlock(&data->update_lock);
1086 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
1087 struct device_attribute *attr, char *buf)
1089 int nr = to_sensor_dev_attr(attr)->index;
1090 struct lm85_data *data = lm85_update_device(dev);
1091 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
1094 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
1095 struct device_attribute *attr, const char *buf, size_t count)
1097 int nr = to_sensor_dev_attr(attr)->index;
1098 struct i2c_client *client = to_i2c_client(dev);
1099 struct lm85_data *data = i2c_get_clientdata(client);
1104 err = kstrtol(buf, 10, &val);
1108 mutex_lock(&data->update_lock);
1109 data->autofan[nr].min_off = val;
1110 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1111 tmp &= ~(0x20 << nr);
1112 if (data->autofan[nr].min_off)
1114 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
1115 mutex_unlock(&data->update_lock);
1119 #define pwm_auto(offset) \
1120 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
1121 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
1122 set_pwm_auto_channels, offset - 1); \
1123 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
1124 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
1125 set_pwm_auto_pwm_min, offset - 1); \
1126 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
1127 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
1128 set_pwm_auto_pwm_minctl, offset - 1)
1134 /* Temperature settings for automatic PWM control */
1136 static ssize_t show_temp_auto_temp_off(struct device *dev,
1137 struct device_attribute *attr, char *buf)
1139 int nr = to_sensor_dev_attr(attr)->index;
1140 struct lm85_data *data = lm85_update_device(dev);
1141 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
1142 HYST_FROM_REG(data->zone[nr].hyst));
1145 static ssize_t set_temp_auto_temp_off(struct device *dev,
1146 struct device_attribute *attr, const char *buf, size_t count)
1148 int nr = to_sensor_dev_attr(attr)->index;
1149 struct i2c_client *client = to_i2c_client(dev);
1150 struct lm85_data *data = i2c_get_clientdata(client);
1155 err = kstrtol(buf, 10, &val);
1159 mutex_lock(&data->update_lock);
1160 min = TEMP_FROM_REG(data->zone[nr].limit);
1161 data->zone[nr].hyst = HYST_TO_REG(min - val);
1162 if (nr == 0 || nr == 1) {
1163 lm85_write_value(client, LM85_REG_AFAN_HYST1,
1164 (data->zone[0].hyst << 4)
1165 | data->zone[1].hyst);
1167 lm85_write_value(client, LM85_REG_AFAN_HYST2,
1168 (data->zone[2].hyst << 4));
1170 mutex_unlock(&data->update_lock);
1174 static ssize_t show_temp_auto_temp_min(struct device *dev,
1175 struct device_attribute *attr, char *buf)
1177 int nr = to_sensor_dev_attr(attr)->index;
1178 struct lm85_data *data = lm85_update_device(dev);
1179 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
1182 static ssize_t set_temp_auto_temp_min(struct device *dev,
1183 struct device_attribute *attr, const char *buf, size_t count)
1185 int nr = to_sensor_dev_attr(attr)->index;
1186 struct i2c_client *client = to_i2c_client(dev);
1187 struct lm85_data *data = i2c_get_clientdata(client);
1191 err = kstrtol(buf, 10, &val);
1195 mutex_lock(&data->update_lock);
1196 data->zone[nr].limit = TEMP_TO_REG(val);
1197 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
1198 data->zone[nr].limit);
1200 /* Update temp_auto_max and temp_auto_range */
1201 data->zone[nr].range = RANGE_TO_REG(
1202 TEMP_FROM_REG(data->zone[nr].max_desired) -
1203 TEMP_FROM_REG(data->zone[nr].limit));
1204 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
1205 ((data->zone[nr].range & 0x0f) << 4)
1206 | (data->pwm_freq[nr] & 0x07));
1208 mutex_unlock(&data->update_lock);
1212 static ssize_t show_temp_auto_temp_max(struct device *dev,
1213 struct device_attribute *attr, char *buf)
1215 int nr = to_sensor_dev_attr(attr)->index;
1216 struct lm85_data *data = lm85_update_device(dev);
1217 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
1218 RANGE_FROM_REG(data->zone[nr].range));
1221 static ssize_t set_temp_auto_temp_max(struct device *dev,
1222 struct device_attribute *attr, const char *buf, size_t count)
1224 int nr = to_sensor_dev_attr(attr)->index;
1225 struct i2c_client *client = to_i2c_client(dev);
1226 struct lm85_data *data = i2c_get_clientdata(client);
1231 err = kstrtol(buf, 10, &val);
1235 mutex_lock(&data->update_lock);
1236 min = TEMP_FROM_REG(data->zone[nr].limit);
1237 data->zone[nr].max_desired = TEMP_TO_REG(val);
1238 data->zone[nr].range = RANGE_TO_REG(
1240 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
1241 ((data->zone[nr].range & 0x0f) << 4)
1242 | (data->pwm_freq[nr] & 0x07));
1243 mutex_unlock(&data->update_lock);
1247 static ssize_t show_temp_auto_temp_crit(struct device *dev,
1248 struct device_attribute *attr, char *buf)
1250 int nr = to_sensor_dev_attr(attr)->index;
1251 struct lm85_data *data = lm85_update_device(dev);
1252 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
1255 static ssize_t set_temp_auto_temp_crit(struct device *dev,
1256 struct device_attribute *attr, const char *buf, size_t count)
1258 int nr = to_sensor_dev_attr(attr)->index;
1259 struct i2c_client *client = to_i2c_client(dev);
1260 struct lm85_data *data = i2c_get_clientdata(client);
1264 err = kstrtol(buf, 10, &val);
1268 mutex_lock(&data->update_lock);
1269 data->zone[nr].critical = TEMP_TO_REG(val);
1270 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
1271 data->zone[nr].critical);
1272 mutex_unlock(&data->update_lock);
1276 #define temp_auto(offset) \
1277 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
1278 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
1279 set_temp_auto_temp_off, offset - 1); \
1280 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
1281 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
1282 set_temp_auto_temp_min, offset - 1); \
1283 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
1284 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
1285 set_temp_auto_temp_max, offset - 1); \
1286 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
1287 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
1288 set_temp_auto_temp_crit, offset - 1);
1294 static struct attribute *lm85_attributes[] = {
1295 &sensor_dev_attr_fan1_input.dev_attr.attr,
1296 &sensor_dev_attr_fan2_input.dev_attr.attr,
1297 &sensor_dev_attr_fan3_input.dev_attr.attr,
1298 &sensor_dev_attr_fan4_input.dev_attr.attr,
1299 &sensor_dev_attr_fan1_min.dev_attr.attr,
1300 &sensor_dev_attr_fan2_min.dev_attr.attr,
1301 &sensor_dev_attr_fan3_min.dev_attr.attr,
1302 &sensor_dev_attr_fan4_min.dev_attr.attr,
1303 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1304 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1305 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1306 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1308 &sensor_dev_attr_pwm1.dev_attr.attr,
1309 &sensor_dev_attr_pwm2.dev_attr.attr,
1310 &sensor_dev_attr_pwm3.dev_attr.attr,
1311 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1312 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1313 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1314 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1315 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1316 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1318 &sensor_dev_attr_in0_input.dev_attr.attr,
1319 &sensor_dev_attr_in1_input.dev_attr.attr,
1320 &sensor_dev_attr_in2_input.dev_attr.attr,
1321 &sensor_dev_attr_in3_input.dev_attr.attr,
1322 &sensor_dev_attr_in0_min.dev_attr.attr,
1323 &sensor_dev_attr_in1_min.dev_attr.attr,
1324 &sensor_dev_attr_in2_min.dev_attr.attr,
1325 &sensor_dev_attr_in3_min.dev_attr.attr,
1326 &sensor_dev_attr_in0_max.dev_attr.attr,
1327 &sensor_dev_attr_in1_max.dev_attr.attr,
1328 &sensor_dev_attr_in2_max.dev_attr.attr,
1329 &sensor_dev_attr_in3_max.dev_attr.attr,
1330 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1331 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1332 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1333 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1335 &sensor_dev_attr_temp1_input.dev_attr.attr,
1336 &sensor_dev_attr_temp2_input.dev_attr.attr,
1337 &sensor_dev_attr_temp3_input.dev_attr.attr,
1338 &sensor_dev_attr_temp1_min.dev_attr.attr,
1339 &sensor_dev_attr_temp2_min.dev_attr.attr,
1340 &sensor_dev_attr_temp3_min.dev_attr.attr,
1341 &sensor_dev_attr_temp1_max.dev_attr.attr,
1342 &sensor_dev_attr_temp2_max.dev_attr.attr,
1343 &sensor_dev_attr_temp3_max.dev_attr.attr,
1344 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1345 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1346 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1347 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1348 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1350 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1351 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1352 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1353 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1354 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1355 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1357 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1358 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1359 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1360 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1361 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1362 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1363 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1364 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1365 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1368 &dev_attr_cpu0_vid.attr,
1369 &dev_attr_alarms.attr,
1373 static const struct attribute_group lm85_group = {
1374 .attrs = lm85_attributes,
1377 static struct attribute *lm85_attributes_minctl[] = {
1378 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1379 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1380 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1384 static const struct attribute_group lm85_group_minctl = {
1385 .attrs = lm85_attributes_minctl,
1388 static struct attribute *lm85_attributes_temp_off[] = {
1389 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1390 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1391 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1395 static const struct attribute_group lm85_group_temp_off = {
1396 .attrs = lm85_attributes_temp_off,
1399 static struct attribute *lm85_attributes_in4[] = {
1400 &sensor_dev_attr_in4_input.dev_attr.attr,
1401 &sensor_dev_attr_in4_min.dev_attr.attr,
1402 &sensor_dev_attr_in4_max.dev_attr.attr,
1403 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1407 static const struct attribute_group lm85_group_in4 = {
1408 .attrs = lm85_attributes_in4,
1411 static struct attribute *lm85_attributes_in567[] = {
1412 &sensor_dev_attr_in5_input.dev_attr.attr,
1413 &sensor_dev_attr_in6_input.dev_attr.attr,
1414 &sensor_dev_attr_in7_input.dev_attr.attr,
1415 &sensor_dev_attr_in5_min.dev_attr.attr,
1416 &sensor_dev_attr_in6_min.dev_attr.attr,
1417 &sensor_dev_attr_in7_min.dev_attr.attr,
1418 &sensor_dev_attr_in5_max.dev_attr.attr,
1419 &sensor_dev_attr_in6_max.dev_attr.attr,
1420 &sensor_dev_attr_in7_max.dev_attr.attr,
1421 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1422 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1423 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1427 static const struct attribute_group lm85_group_in567 = {
1428 .attrs = lm85_attributes_in567,
1431 static void lm85_init_client(struct i2c_client *client)
1435 /* Start monitoring if needed */
1436 value = lm85_read_value(client, LM85_REG_CONFIG);
1437 if (!(value & 0x01)) {
1438 dev_info(&client->dev, "Starting monitoring\n");
1439 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1442 /* Warn about unusual configuration bits */
1444 dev_warn(&client->dev, "Device configuration is locked\n");
1445 if (!(value & 0x04))
1446 dev_warn(&client->dev, "Device is not ready\n");
1449 static int lm85_is_fake(struct i2c_client *client)
1452 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1453 * emulate the former except that it has no hardware monitoring function
1454 * so the readings are always 0.
1459 for (i = 0; i < 8; i++) {
1460 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1461 fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1462 if (in_temp != 0x00 || fan != 0xff)
1469 /* Return 0 if detection is successful, -ENODEV otherwise */
1470 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
1472 struct i2c_adapter *adapter = client->adapter;
1473 int address = client->addr;
1474 const char *type_name = NULL;
1475 int company, verstep;
1477 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1478 /* We need to be able to do byte I/O */
1482 /* Determine the chip type */
1483 company = lm85_read_value(client, LM85_REG_COMPANY);
1484 verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1486 dev_dbg(&adapter->dev,
1487 "Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1488 address, company, verstep);
1490 if (company == LM85_COMPANY_NATIONAL) {
1492 case LM85_VERSTEP_LM85C:
1493 type_name = "lm85c";
1495 case LM85_VERSTEP_LM85B:
1496 type_name = "lm85b";
1498 case LM85_VERSTEP_LM96000_1:
1499 case LM85_VERSTEP_LM96000_2:
1500 /* Check for Winbond WPCD377I */
1501 if (lm85_is_fake(client)) {
1502 dev_dbg(&adapter->dev,
1503 "Found Winbond WPCD377I, ignoring\n");
1509 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1511 case LM85_VERSTEP_ADM1027:
1512 type_name = "adm1027";
1514 case LM85_VERSTEP_ADT7463:
1515 case LM85_VERSTEP_ADT7463C:
1516 type_name = "adt7463";
1518 case LM85_VERSTEP_ADT7468_1:
1519 case LM85_VERSTEP_ADT7468_2:
1520 type_name = "adt7468";
1523 } else if (company == LM85_COMPANY_SMSC) {
1525 case LM85_VERSTEP_EMC6D100_A0:
1526 case LM85_VERSTEP_EMC6D100_A1:
1527 /* Note: we can't tell a '100 from a '101 */
1528 type_name = "emc6d100";
1530 case LM85_VERSTEP_EMC6D102:
1531 type_name = "emc6d102";
1533 case LM85_VERSTEP_EMC6D103_A0:
1534 case LM85_VERSTEP_EMC6D103_A1:
1535 type_name = "emc6d103";
1537 case LM85_VERSTEP_EMC6D103S:
1538 type_name = "emc6d103s";
1546 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1551 static void lm85_remove_files(struct i2c_client *client, struct lm85_data *data)
1553 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1554 if (data->type != emc6d103s) {
1555 sysfs_remove_group(&client->dev.kobj, &lm85_group_minctl);
1556 sysfs_remove_group(&client->dev.kobj, &lm85_group_temp_off);
1558 if (!data->has_vid5)
1559 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1560 if (data->type == emc6d100)
1561 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1564 static int lm85_probe(struct i2c_client *client,
1565 const struct i2c_device_id *id)
1567 struct lm85_data *data;
1570 data = devm_kzalloc(&client->dev, sizeof(struct lm85_data), GFP_KERNEL);
1574 i2c_set_clientdata(client, data);
1575 data->type = id->driver_data;
1576 mutex_init(&data->update_lock);
1578 /* Fill in the chip specific driver values */
1579 switch (data->type) {
1587 data->freq_map = adm1027_freq_map;
1590 data->freq_map = lm85_freq_map;
1593 /* Set the VRM version */
1594 data->vrm = vid_which_vrm();
1596 /* Initialize the LM85 chip */
1597 lm85_init_client(client);
1599 /* Register sysfs hooks */
1600 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1604 /* minctl and temp_off exist on all chips except emc6d103s */
1605 if (data->type != emc6d103s) {
1606 err = sysfs_create_group(&client->dev.kobj, &lm85_group_minctl);
1608 goto err_remove_files;
1609 err = sysfs_create_group(&client->dev.kobj,
1610 &lm85_group_temp_off);
1612 goto err_remove_files;
1616 * The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1617 * as a sixth digital VID input rather than an analog input.
1619 if (data->type == adt7463 || data->type == adt7468) {
1620 u8 vid = lm85_read_value(client, LM85_REG_VID);
1622 data->has_vid5 = true;
1625 if (!data->has_vid5) {
1626 err = sysfs_create_group(&client->dev.kobj, &lm85_group_in4);
1628 goto err_remove_files;
1631 /* The EMC6D100 has 3 additional voltage inputs */
1632 if (data->type == emc6d100) {
1633 err = sysfs_create_group(&client->dev.kobj, &lm85_group_in567);
1635 goto err_remove_files;
1638 data->hwmon_dev = hwmon_device_register(&client->dev);
1639 if (IS_ERR(data->hwmon_dev)) {
1640 err = PTR_ERR(data->hwmon_dev);
1641 goto err_remove_files;
1646 /* Error out and cleanup code */
1648 lm85_remove_files(client, data);
1652 static int lm85_remove(struct i2c_client *client)
1654 struct lm85_data *data = i2c_get_clientdata(client);
1655 hwmon_device_unregister(data->hwmon_dev);
1656 lm85_remove_files(client, data);
1660 static const struct i2c_device_id lm85_id[] = {
1661 { "adm1027", adm1027 },
1662 { "adt7463", adt7463 },
1663 { "adt7468", adt7468 },
1667 { "emc6d100", emc6d100 },
1668 { "emc6d101", emc6d100 },
1669 { "emc6d102", emc6d102 },
1670 { "emc6d103", emc6d103 },
1671 { "emc6d103s", emc6d103s },
1674 MODULE_DEVICE_TABLE(i2c, lm85_id);
1676 static struct i2c_driver lm85_driver = {
1677 .class = I2C_CLASS_HWMON,
1681 .probe = lm85_probe,
1682 .remove = lm85_remove,
1683 .id_table = lm85_id,
1684 .detect = lm85_detect,
1685 .address_list = normal_i2c,
1688 module_i2c_driver(lm85_driver);
1690 MODULE_LICENSE("GPL");
1691 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1692 "Margit Schubert-While <margitsw@t-online.de>, "
1693 "Justin Thiessen <jthiessen@penguincomputing.com>");
1694 MODULE_DESCRIPTION("LM85-B, LM85-C driver");