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/of_device.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/jiffies.h>
32 #include <linux/i2c.h>
33 #include <linux/hwmon.h>
34 #include <linux/hwmon-vid.h>
35 #include <linux/hwmon-sysfs.h>
36 #include <linux/err.h>
37 #include <linux/mutex.h>
38 #include <linux/util_macros.h>
40 /* Addresses to scan */
41 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
45 adm1027, adt7463, adt7468,
46 emc6d100, emc6d102, emc6d103, emc6d103s
49 /* The LM85 registers */
51 #define LM85_REG_IN(nr) (0x20 + (nr))
52 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
53 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
55 #define LM85_REG_TEMP(nr) (0x25 + (nr))
56 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
57 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
59 /* Fan speeds are LSB, MSB (2 bytes) */
60 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
61 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
63 #define LM85_REG_PWM(nr) (0x30 + (nr))
65 #define LM85_REG_COMPANY 0x3e
66 #define LM85_REG_VERSTEP 0x3f
68 #define ADT7468_REG_CFG5 0x7c
69 #define ADT7468_OFF64 (1 << 0)
70 #define ADT7468_HFPWM (1 << 1)
71 #define IS_ADT7468_OFF64(data) \
72 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
73 #define IS_ADT7468_HFPWM(data) \
74 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
76 /* These are the recognized values for the above regs */
77 #define LM85_COMPANY_NATIONAL 0x01
78 #define LM85_COMPANY_ANALOG_DEV 0x41
79 #define LM85_COMPANY_SMSC 0x5c
80 #define LM85_VERSTEP_LM85C 0x60
81 #define LM85_VERSTEP_LM85B 0x62
82 #define LM85_VERSTEP_LM96000_1 0x68
83 #define LM85_VERSTEP_LM96000_2 0x69
84 #define LM85_VERSTEP_ADM1027 0x60
85 #define LM85_VERSTEP_ADT7463 0x62
86 #define LM85_VERSTEP_ADT7463C 0x6A
87 #define LM85_VERSTEP_ADT7468_1 0x71
88 #define LM85_VERSTEP_ADT7468_2 0x72
89 #define LM85_VERSTEP_EMC6D100_A0 0x60
90 #define LM85_VERSTEP_EMC6D100_A1 0x61
91 #define LM85_VERSTEP_EMC6D102 0x65
92 #define LM85_VERSTEP_EMC6D103_A0 0x68
93 #define LM85_VERSTEP_EMC6D103_A1 0x69
94 #define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
96 #define LM85_REG_CONFIG 0x40
98 #define LM85_REG_ALARM1 0x41
99 #define LM85_REG_ALARM2 0x42
101 #define LM85_REG_VID 0x43
103 /* Automated FAN control */
104 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
105 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
106 #define LM85_REG_AFAN_SPIKE1 0x62
107 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
108 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
109 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
110 #define LM85_REG_AFAN_HYST1 0x6d
111 #define LM85_REG_AFAN_HYST2 0x6e
113 #define ADM1027_REG_EXTEND_ADC1 0x76
114 #define ADM1027_REG_EXTEND_ADC2 0x77
116 #define EMC6D100_REG_ALARM3 0x7d
117 /* IN5, IN6 and IN7 */
118 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
119 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
120 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
121 #define EMC6D102_REG_EXTEND_ADC1 0x85
122 #define EMC6D102_REG_EXTEND_ADC2 0x86
123 #define EMC6D102_REG_EXTEND_ADC3 0x87
124 #define EMC6D102_REG_EXTEND_ADC4 0x88
127 * Conversions. Rounding and limit checking is only done on the TO_REG
128 * variants. Note that you should be a bit careful with which arguments
129 * these macros are called: arguments may be evaluated more than once.
132 /* IN are scaled according to built-in resistors */
133 static const int lm85_scaling[] = { /* .001 Volts */
134 2500, 2250, 3300, 5000, 12000,
135 3300, 1500, 1800 /*EMC6D100*/
137 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
139 #define INS_TO_REG(n, val) \
140 SCALE(clamp_val(val, 0, 255 * lm85_scaling[n] / 192), \
141 lm85_scaling[n], 192)
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 clamp_val(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(clamp_val((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) clamp_val(val, 0, 255)
166 #define PWM_FROM_REG(val) (val)
170 * ZONEs have the following parameters:
171 * Limit (low) temp, 1. degC
172 * Hysteresis (below limit), 1. degC (0-15)
173 * Range of speed control, .1 degC (2-80)
174 * Critical (high) temp, 1. degC
176 * FAN PWMs have the following parameters:
177 * Reference Zone, 1, 2, 3, etc.
178 * Spinup time, .05 sec
179 * PWM value at limit/low temp, 1 count
180 * PWM Frequency, 1. Hz
181 * PWM is Min or OFF below limit, flag
182 * Invert PWM output, flag
184 * Some chips filter the temp, others the fan.
185 * Filter constant (or disabled) .1 seconds
188 /* These are the zone temperature range encodings in .001 degree C */
189 static const int lm85_range_map[] = {
190 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
191 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
194 static int RANGE_TO_REG(long range)
196 return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map));
198 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
200 /* These are the PWM frequency encodings */
201 static const int lm85_freq_map[] = { /* 1 Hz */
202 10, 15, 23, 30, 38, 47, 61, 94
205 static const int lm96000_freq_map[] = { /* 1 Hz */
206 10, 15, 23, 30, 38, 47, 61, 94,
207 22500, 24000, 25700, 25700, 27700, 27700, 30000, 30000
210 static const int adm1027_freq_map[] = { /* 1 Hz */
211 11, 15, 22, 29, 35, 44, 59, 88
214 static int FREQ_TO_REG(const int *map,
215 unsigned int map_size, unsigned long freq)
217 return find_closest(freq, map, map_size);
220 static int FREQ_FROM_REG(const int *map, unsigned int map_size, u8 reg)
222 return map[reg % map_size];
226 * Since we can't use strings, I'm abusing these numbers
227 * to stand in for the following meanings:
228 * 1 -- PWM responds to Zone 1
229 * 2 -- PWM responds to Zone 2
230 * 3 -- PWM responds to Zone 3
231 * 23 -- PWM responds to the higher temp of Zone 2 or 3
232 * 123 -- PWM responds to highest of Zone 1, 2, or 3
233 * 0 -- PWM is always at 0% (ie, off)
234 * -1 -- PWM is always at 100%
235 * -2 -- PWM responds to manual control
238 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
239 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
241 static int ZONE_TO_REG(int zone)
245 for (i = 0; i <= 7; ++i)
246 if (zone == lm85_zone_map[i])
248 if (i > 7) /* Not found. */
249 i = 3; /* Always 100% */
253 #define HYST_TO_REG(val) clamp_val(((val) + 500) / 1000, 0, 15)
254 #define HYST_FROM_REG(val) ((val) * 1000)
257 * Chip sampling rates
259 * Some sensors are not updated more frequently than once per second
260 * so it doesn't make sense to read them more often than that.
261 * We cache the results and return the saved data if the driver
262 * is called again before a second has elapsed.
264 * Also, there is significant configuration data for this chip
265 * given the automatic PWM fan control that is possible. There
266 * are about 47 bytes of config data to only 22 bytes of actual
267 * readings. So, we keep the config data up to date in the cache
268 * when it is written and only sample it once every 1 *minute*
270 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
271 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
274 * LM85 can automatically adjust fan speeds based on temperature
275 * This structure encapsulates an entire Zone config. There are
276 * three zones (one for each temperature input) on the lm85
279 s8 limit; /* Low temp limit */
280 u8 hyst; /* Low limit hysteresis. (0-15) */
281 u8 range; /* Temp range, encoded */
282 s8 critical; /* "All fans ON" temp limit */
284 * Actual "max" temperature specified. Preserved
285 * to prevent "drift" as other autofan control
290 struct lm85_autofan {
291 u8 config; /* Register value */
292 u8 min_pwm; /* Minimum PWM value, encoded */
293 u8 min_off; /* Min PWM or OFF below "limit", flag */
297 * For each registered chip, we need to keep some data in memory.
298 * The structure is dynamically allocated.
301 struct i2c_client *client;
302 const struct attribute_group *groups[6];
304 unsigned int freq_map_size;
308 bool has_vid5; /* true if VID5 is configured for ADT7463 or ADT7468 */
310 struct mutex update_lock;
311 int valid; /* !=0 if following fields are valid */
312 unsigned long last_reading; /* In jiffies */
313 unsigned long last_config; /* In jiffies */
315 u8 in[8]; /* Register value */
316 u8 in_max[8]; /* Register value */
317 u8 in_min[8]; /* Register value */
318 s8 temp[3]; /* Register value */
319 s8 temp_min[3]; /* Register value */
320 s8 temp_max[3]; /* Register value */
321 u16 fan[4]; /* Register value */
322 u16 fan_min[4]; /* Register value */
323 u8 pwm[3]; /* Register value */
324 u8 pwm_freq[3]; /* Register encoding */
325 u8 temp_ext[3]; /* Decoded values */
326 u8 in_ext[8]; /* Decoded values */
327 u8 vid; /* Register value */
328 u8 vrm; /* VRM version */
329 u32 alarms; /* Register encoding, combined */
330 u8 cfg5; /* Config Register 5 on ADT7468 */
331 struct lm85_autofan autofan[3];
332 struct lm85_zone zone[3];
335 static int lm85_read_value(struct i2c_client *client, u8 reg)
339 /* What size location is it? */
341 case LM85_REG_FAN(0): /* Read WORD data */
342 case LM85_REG_FAN(1):
343 case LM85_REG_FAN(2):
344 case LM85_REG_FAN(3):
345 case LM85_REG_FAN_MIN(0):
346 case LM85_REG_FAN_MIN(1):
347 case LM85_REG_FAN_MIN(2):
348 case LM85_REG_FAN_MIN(3):
349 case LM85_REG_ALARM1: /* Read both bytes at once */
350 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
351 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
353 default: /* Read BYTE data */
354 res = i2c_smbus_read_byte_data(client, reg);
361 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
364 case LM85_REG_FAN(0): /* Write WORD data */
365 case LM85_REG_FAN(1):
366 case LM85_REG_FAN(2):
367 case LM85_REG_FAN(3):
368 case LM85_REG_FAN_MIN(0):
369 case LM85_REG_FAN_MIN(1):
370 case LM85_REG_FAN_MIN(2):
371 case LM85_REG_FAN_MIN(3):
372 /* NOTE: ALARM is read only, so not included here */
373 i2c_smbus_write_byte_data(client, reg, value & 0xff);
374 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
376 default: /* Write BYTE data */
377 i2c_smbus_write_byte_data(client, reg, value);
382 static struct lm85_data *lm85_update_device(struct device *dev)
384 struct lm85_data *data = dev_get_drvdata(dev);
385 struct i2c_client *client = data->client;
388 mutex_lock(&data->update_lock);
391 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
392 /* Things that change quickly */
393 dev_dbg(&client->dev, "Reading sensor values\n");
396 * Have to read extended bits first to "freeze" the
397 * more significant bits that are read later.
398 * There are 2 additional resolution bits per channel and we
399 * have room for 4, so we shift them to the left.
401 if (data->type == adm1027 || data->type == adt7463 ||
402 data->type == adt7468) {
403 int ext1 = lm85_read_value(client,
404 ADM1027_REG_EXTEND_ADC1);
405 int ext2 = lm85_read_value(client,
406 ADM1027_REG_EXTEND_ADC2);
407 int val = (ext1 << 8) + ext2;
409 for (i = 0; i <= 4; i++)
411 ((val >> (i * 2)) & 0x03) << 2;
413 for (i = 0; i <= 2; i++)
415 (val >> ((i + 4) * 2)) & 0x0c;
418 data->vid = lm85_read_value(client, LM85_REG_VID);
420 for (i = 0; i <= 3; ++i) {
422 lm85_read_value(client, LM85_REG_IN(i));
424 lm85_read_value(client, LM85_REG_FAN(i));
428 data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
430 if (data->type == adt7468)
431 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
433 for (i = 0; i <= 2; ++i) {
435 lm85_read_value(client, LM85_REG_TEMP(i));
437 lm85_read_value(client, LM85_REG_PWM(i));
439 if (IS_ADT7468_OFF64(data))
443 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
445 if (data->type == emc6d100) {
446 /* Three more voltage sensors */
447 for (i = 5; i <= 7; ++i) {
448 data->in[i] = lm85_read_value(client,
451 /* More alarm bits */
452 data->alarms |= lm85_read_value(client,
453 EMC6D100_REG_ALARM3) << 16;
454 } else if (data->type == emc6d102 || data->type == emc6d103 ||
455 data->type == emc6d103s) {
457 * Have to read LSB bits after the MSB ones because
458 * the reading of the MSB bits has frozen the
459 * LSBs (backward from the ADM1027).
461 int ext1 = lm85_read_value(client,
462 EMC6D102_REG_EXTEND_ADC1);
463 int ext2 = lm85_read_value(client,
464 EMC6D102_REG_EXTEND_ADC2);
465 int ext3 = lm85_read_value(client,
466 EMC6D102_REG_EXTEND_ADC3);
467 int ext4 = lm85_read_value(client,
468 EMC6D102_REG_EXTEND_ADC4);
469 data->in_ext[0] = ext3 & 0x0f;
470 data->in_ext[1] = ext4 & 0x0f;
471 data->in_ext[2] = ext4 >> 4;
472 data->in_ext[3] = ext3 >> 4;
473 data->in_ext[4] = ext2 >> 4;
475 data->temp_ext[0] = ext1 & 0x0f;
476 data->temp_ext[1] = ext2 & 0x0f;
477 data->temp_ext[2] = ext1 >> 4;
480 data->last_reading = jiffies;
484 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
485 /* Things that don't change often */
486 dev_dbg(&client->dev, "Reading config values\n");
488 for (i = 0; i <= 3; ++i) {
490 lm85_read_value(client, LM85_REG_IN_MIN(i));
492 lm85_read_value(client, LM85_REG_IN_MAX(i));
494 lm85_read_value(client, LM85_REG_FAN_MIN(i));
497 if (!data->has_vid5) {
498 data->in_min[4] = lm85_read_value(client,
500 data->in_max[4] = lm85_read_value(client,
504 if (data->type == emc6d100) {
505 for (i = 5; i <= 7; ++i) {
506 data->in_min[i] = lm85_read_value(client,
507 EMC6D100_REG_IN_MIN(i));
508 data->in_max[i] = lm85_read_value(client,
509 EMC6D100_REG_IN_MAX(i));
513 for (i = 0; i <= 2; ++i) {
517 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
519 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
521 data->autofan[i].config =
522 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
523 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
524 data->pwm_freq[i] = val % data->freq_map_size;
525 data->zone[i].range = val >> 4;
526 data->autofan[i].min_pwm =
527 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
528 data->zone[i].limit =
529 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
530 data->zone[i].critical =
531 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
533 if (IS_ADT7468_OFF64(data)) {
534 data->temp_min[i] -= 64;
535 data->temp_max[i] -= 64;
536 data->zone[i].limit -= 64;
537 data->zone[i].critical -= 64;
541 if (data->type != emc6d103s) {
542 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
543 data->autofan[0].min_off = (i & 0x20) != 0;
544 data->autofan[1].min_off = (i & 0x40) != 0;
545 data->autofan[2].min_off = (i & 0x80) != 0;
547 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
548 data->zone[0].hyst = i >> 4;
549 data->zone[1].hyst = i & 0x0f;
551 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
552 data->zone[2].hyst = i >> 4;
555 data->last_config = jiffies;
560 mutex_unlock(&data->update_lock);
566 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
569 int nr = to_sensor_dev_attr(attr)->index;
570 struct lm85_data *data = lm85_update_device(dev);
571 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
574 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
577 int nr = to_sensor_dev_attr(attr)->index;
578 struct lm85_data *data = lm85_update_device(dev);
579 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
582 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
583 const char *buf, size_t count)
585 int nr = to_sensor_dev_attr(attr)->index;
586 struct lm85_data *data = dev_get_drvdata(dev);
587 struct i2c_client *client = data->client;
591 err = kstrtoul(buf, 10, &val);
595 mutex_lock(&data->update_lock);
596 data->fan_min[nr] = FAN_TO_REG(val);
597 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
598 mutex_unlock(&data->update_lock);
602 #define show_fan_offset(offset) \
603 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
604 show_fan, NULL, offset - 1); \
605 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
606 show_fan_min, set_fan_min, offset - 1)
613 /* vid, vrm, alarms */
615 static ssize_t cpu0_vid_show(struct device *dev,
616 struct device_attribute *attr, char *buf)
618 struct lm85_data *data = lm85_update_device(dev);
621 if (data->has_vid5) {
622 /* 6-pin VID (VRM 10) */
623 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
625 /* 5-pin VID (VRM 9) */
626 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
629 return sprintf(buf, "%d\n", vid);
632 static DEVICE_ATTR_RO(cpu0_vid);
634 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
637 struct lm85_data *data = dev_get_drvdata(dev);
638 return sprintf(buf, "%ld\n", (long) data->vrm);
641 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
642 const char *buf, size_t count)
644 struct lm85_data *data = dev_get_drvdata(dev);
648 err = kstrtoul(buf, 10, &val);
659 static DEVICE_ATTR_RW(vrm);
661 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
664 struct lm85_data *data = lm85_update_device(dev);
665 return sprintf(buf, "%u\n", data->alarms);
668 static DEVICE_ATTR_RO(alarms);
670 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
673 int nr = to_sensor_dev_attr(attr)->index;
674 struct lm85_data *data = lm85_update_device(dev);
675 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
678 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
679 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
680 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
681 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
682 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
683 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
684 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
685 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
686 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
687 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
688 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
689 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
690 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
691 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
692 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
693 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
694 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
698 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
701 int nr = to_sensor_dev_attr(attr)->index;
702 struct lm85_data *data = lm85_update_device(dev);
703 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
706 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
707 const char *buf, size_t count)
709 int nr = to_sensor_dev_attr(attr)->index;
710 struct lm85_data *data = dev_get_drvdata(dev);
711 struct i2c_client *client = data->client;
715 err = kstrtoul(buf, 10, &val);
719 mutex_lock(&data->update_lock);
720 data->pwm[nr] = PWM_TO_REG(val);
721 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
722 mutex_unlock(&data->update_lock);
726 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
729 int nr = to_sensor_dev_attr(attr)->index;
730 struct lm85_data *data = lm85_update_device(dev);
731 int pwm_zone, enable;
733 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
735 case -1: /* PWM is always at 100% */
738 case 0: /* PWM is always at 0% */
739 case -2: /* PWM responds to manual control */
742 default: /* PWM in automatic mode */
745 return sprintf(buf, "%d\n", enable);
748 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
749 *attr, const char *buf, size_t count)
751 int nr = to_sensor_dev_attr(attr)->index;
752 struct lm85_data *data = dev_get_drvdata(dev);
753 struct i2c_client *client = data->client;
758 err = kstrtoul(buf, 10, &val);
771 * Here we have to choose arbitrarily one of the 5 possible
772 * configurations; I go for the safest
780 mutex_lock(&data->update_lock);
781 data->autofan[nr].config = lm85_read_value(client,
782 LM85_REG_AFAN_CONFIG(nr));
783 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
785 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
786 data->autofan[nr].config);
787 mutex_unlock(&data->update_lock);
791 static ssize_t show_pwm_freq(struct device *dev,
792 struct device_attribute *attr, char *buf)
794 int nr = to_sensor_dev_attr(attr)->index;
795 struct lm85_data *data = lm85_update_device(dev);
798 if (IS_ADT7468_HFPWM(data))
801 freq = FREQ_FROM_REG(data->freq_map, data->freq_map_size,
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 lm85_data *data = dev_get_drvdata(dev);
812 struct i2c_client *client = data->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,
831 data->freq_map_size, val);
832 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
833 (data->zone[nr].range << 4)
834 | data->pwm_freq[nr]);
835 if (data->type == adt7468) {
836 data->cfg5 |= ADT7468_HFPWM;
837 lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
840 mutex_unlock(&data->update_lock);
844 #define show_pwm_reg(offset) \
845 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
846 show_pwm, set_pwm, offset - 1); \
847 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
848 show_pwm_enable, set_pwm_enable, offset - 1); \
849 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
850 show_pwm_freq, set_pwm_freq, offset - 1)
858 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
861 int nr = to_sensor_dev_attr(attr)->index;
862 struct lm85_data *data = lm85_update_device(dev);
863 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
867 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
870 int nr = to_sensor_dev_attr(attr)->index;
871 struct lm85_data *data = lm85_update_device(dev);
872 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
875 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
876 const char *buf, size_t count)
878 int nr = to_sensor_dev_attr(attr)->index;
879 struct lm85_data *data = dev_get_drvdata(dev);
880 struct i2c_client *client = data->client;
884 err = kstrtol(buf, 10, &val);
888 mutex_lock(&data->update_lock);
889 data->in_min[nr] = INS_TO_REG(nr, val);
890 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
891 mutex_unlock(&data->update_lock);
895 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
898 int nr = to_sensor_dev_attr(attr)->index;
899 struct lm85_data *data = lm85_update_device(dev);
900 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
903 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
904 const char *buf, size_t count)
906 int nr = to_sensor_dev_attr(attr)->index;
907 struct lm85_data *data = dev_get_drvdata(dev);
908 struct i2c_client *client = data->client;
912 err = kstrtol(buf, 10, &val);
916 mutex_lock(&data->update_lock);
917 data->in_max[nr] = INS_TO_REG(nr, val);
918 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
919 mutex_unlock(&data->update_lock);
923 #define show_in_reg(offset) \
924 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
925 show_in, NULL, offset); \
926 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
927 show_in_min, set_in_min, offset); \
928 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
929 show_in_max, set_in_max, offset)
942 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
945 int nr = to_sensor_dev_attr(attr)->index;
946 struct lm85_data *data = lm85_update_device(dev);
947 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
948 data->temp_ext[nr]));
951 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
954 int nr = to_sensor_dev_attr(attr)->index;
955 struct lm85_data *data = lm85_update_device(dev);
956 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
959 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
960 const char *buf, size_t count)
962 int nr = to_sensor_dev_attr(attr)->index;
963 struct lm85_data *data = dev_get_drvdata(dev);
964 struct i2c_client *client = data->client;
968 err = kstrtol(buf, 10, &val);
972 if (IS_ADT7468_OFF64(data))
975 mutex_lock(&data->update_lock);
976 data->temp_min[nr] = TEMP_TO_REG(val);
977 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
978 mutex_unlock(&data->update_lock);
982 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
985 int nr = to_sensor_dev_attr(attr)->index;
986 struct lm85_data *data = lm85_update_device(dev);
987 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
990 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
991 const char *buf, size_t count)
993 int nr = to_sensor_dev_attr(attr)->index;
994 struct lm85_data *data = dev_get_drvdata(dev);
995 struct i2c_client *client = data->client;
999 err = kstrtol(buf, 10, &val);
1003 if (IS_ADT7468_OFF64(data))
1006 mutex_lock(&data->update_lock);
1007 data->temp_max[nr] = TEMP_TO_REG(val);
1008 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
1009 mutex_unlock(&data->update_lock);
1013 #define show_temp_reg(offset) \
1014 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
1015 show_temp, NULL, offset - 1); \
1016 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
1017 show_temp_min, set_temp_min, offset - 1); \
1018 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
1019 show_temp_max, set_temp_max, offset - 1);
1026 /* Automatic PWM control */
1028 static ssize_t show_pwm_auto_channels(struct device *dev,
1029 struct device_attribute *attr, char *buf)
1031 int nr = to_sensor_dev_attr(attr)->index;
1032 struct lm85_data *data = lm85_update_device(dev);
1033 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
1036 static ssize_t set_pwm_auto_channels(struct device *dev,
1037 struct device_attribute *attr, const char *buf, size_t count)
1039 int nr = to_sensor_dev_attr(attr)->index;
1040 struct lm85_data *data = dev_get_drvdata(dev);
1041 struct i2c_client *client = data->client;
1045 err = kstrtol(buf, 10, &val);
1049 mutex_lock(&data->update_lock);
1050 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
1052 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
1053 data->autofan[nr].config);
1054 mutex_unlock(&data->update_lock);
1058 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
1059 struct device_attribute *attr, char *buf)
1061 int nr = to_sensor_dev_attr(attr)->index;
1062 struct lm85_data *data = lm85_update_device(dev);
1063 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
1066 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
1067 struct device_attribute *attr, const char *buf, size_t count)
1069 int nr = to_sensor_dev_attr(attr)->index;
1070 struct lm85_data *data = dev_get_drvdata(dev);
1071 struct i2c_client *client = data->client;
1075 err = kstrtoul(buf, 10, &val);
1079 mutex_lock(&data->update_lock);
1080 data->autofan[nr].min_pwm = PWM_TO_REG(val);
1081 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
1082 data->autofan[nr].min_pwm);
1083 mutex_unlock(&data->update_lock);
1087 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
1088 struct device_attribute *attr, char *buf)
1090 int nr = to_sensor_dev_attr(attr)->index;
1091 struct lm85_data *data = lm85_update_device(dev);
1092 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
1095 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
1096 struct device_attribute *attr, const char *buf, size_t count)
1098 int nr = to_sensor_dev_attr(attr)->index;
1099 struct lm85_data *data = dev_get_drvdata(dev);
1100 struct i2c_client *client = data->client;
1105 err = kstrtol(buf, 10, &val);
1109 mutex_lock(&data->update_lock);
1110 data->autofan[nr].min_off = val;
1111 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1112 tmp &= ~(0x20 << nr);
1113 if (data->autofan[nr].min_off)
1115 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
1116 mutex_unlock(&data->update_lock);
1120 #define pwm_auto(offset) \
1121 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
1122 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
1123 set_pwm_auto_channels, offset - 1); \
1124 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
1125 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
1126 set_pwm_auto_pwm_min, offset - 1); \
1127 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
1128 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
1129 set_pwm_auto_pwm_minctl, offset - 1)
1135 /* Temperature settings for automatic PWM control */
1137 static ssize_t show_temp_auto_temp_off(struct device *dev,
1138 struct device_attribute *attr, char *buf)
1140 int nr = to_sensor_dev_attr(attr)->index;
1141 struct lm85_data *data = lm85_update_device(dev);
1142 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
1143 HYST_FROM_REG(data->zone[nr].hyst));
1146 static ssize_t set_temp_auto_temp_off(struct device *dev,
1147 struct device_attribute *attr, const char *buf, size_t count)
1149 int nr = to_sensor_dev_attr(attr)->index;
1150 struct lm85_data *data = dev_get_drvdata(dev);
1151 struct i2c_client *client = data->client;
1156 err = kstrtol(buf, 10, &val);
1160 mutex_lock(&data->update_lock);
1161 min = TEMP_FROM_REG(data->zone[nr].limit);
1162 data->zone[nr].hyst = HYST_TO_REG(min - val);
1163 if (nr == 0 || nr == 1) {
1164 lm85_write_value(client, LM85_REG_AFAN_HYST1,
1165 (data->zone[0].hyst << 4)
1166 | data->zone[1].hyst);
1168 lm85_write_value(client, LM85_REG_AFAN_HYST2,
1169 (data->zone[2].hyst << 4));
1171 mutex_unlock(&data->update_lock);
1175 static ssize_t show_temp_auto_temp_min(struct device *dev,
1176 struct device_attribute *attr, char *buf)
1178 int nr = to_sensor_dev_attr(attr)->index;
1179 struct lm85_data *data = lm85_update_device(dev);
1180 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
1183 static ssize_t set_temp_auto_temp_min(struct device *dev,
1184 struct device_attribute *attr, const char *buf, size_t count)
1186 int nr = to_sensor_dev_attr(attr)->index;
1187 struct lm85_data *data = dev_get_drvdata(dev);
1188 struct i2c_client *client = data->client;
1192 err = kstrtol(buf, 10, &val);
1196 mutex_lock(&data->update_lock);
1197 data->zone[nr].limit = TEMP_TO_REG(val);
1198 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
1199 data->zone[nr].limit);
1201 /* Update temp_auto_max and temp_auto_range */
1202 data->zone[nr].range = RANGE_TO_REG(
1203 TEMP_FROM_REG(data->zone[nr].max_desired) -
1204 TEMP_FROM_REG(data->zone[nr].limit));
1205 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
1206 ((data->zone[nr].range & 0x0f) << 4)
1207 | data->pwm_freq[nr]);
1209 mutex_unlock(&data->update_lock);
1213 static ssize_t show_temp_auto_temp_max(struct device *dev,
1214 struct device_attribute *attr, char *buf)
1216 int nr = to_sensor_dev_attr(attr)->index;
1217 struct lm85_data *data = lm85_update_device(dev);
1218 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
1219 RANGE_FROM_REG(data->zone[nr].range));
1222 static ssize_t set_temp_auto_temp_max(struct device *dev,
1223 struct device_attribute *attr, const char *buf, size_t count)
1225 int nr = to_sensor_dev_attr(attr)->index;
1226 struct lm85_data *data = dev_get_drvdata(dev);
1227 struct i2c_client *client = data->client;
1232 err = kstrtol(buf, 10, &val);
1236 mutex_lock(&data->update_lock);
1237 min = TEMP_FROM_REG(data->zone[nr].limit);
1238 data->zone[nr].max_desired = TEMP_TO_REG(val);
1239 data->zone[nr].range = RANGE_TO_REG(
1241 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
1242 ((data->zone[nr].range & 0x0f) << 4)
1243 | data->pwm_freq[nr]);
1244 mutex_unlock(&data->update_lock);
1248 static ssize_t show_temp_auto_temp_crit(struct device *dev,
1249 struct device_attribute *attr, char *buf)
1251 int nr = to_sensor_dev_attr(attr)->index;
1252 struct lm85_data *data = lm85_update_device(dev);
1253 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
1256 static ssize_t set_temp_auto_temp_crit(struct device *dev,
1257 struct device_attribute *attr, const char *buf, size_t count)
1259 int nr = to_sensor_dev_attr(attr)->index;
1260 struct lm85_data *data = dev_get_drvdata(dev);
1261 struct i2c_client *client = data->client;
1265 err = kstrtol(buf, 10, &val);
1269 mutex_lock(&data->update_lock);
1270 data->zone[nr].critical = TEMP_TO_REG(val);
1271 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
1272 data->zone[nr].critical);
1273 mutex_unlock(&data->update_lock);
1277 #define temp_auto(offset) \
1278 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
1279 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
1280 set_temp_auto_temp_off, offset - 1); \
1281 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
1282 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
1283 set_temp_auto_temp_min, offset - 1); \
1284 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
1285 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
1286 set_temp_auto_temp_max, offset - 1); \
1287 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
1288 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
1289 set_temp_auto_temp_crit, offset - 1);
1295 static struct attribute *lm85_attributes[] = {
1296 &sensor_dev_attr_fan1_input.dev_attr.attr,
1297 &sensor_dev_attr_fan2_input.dev_attr.attr,
1298 &sensor_dev_attr_fan3_input.dev_attr.attr,
1299 &sensor_dev_attr_fan4_input.dev_attr.attr,
1300 &sensor_dev_attr_fan1_min.dev_attr.attr,
1301 &sensor_dev_attr_fan2_min.dev_attr.attr,
1302 &sensor_dev_attr_fan3_min.dev_attr.attr,
1303 &sensor_dev_attr_fan4_min.dev_attr.attr,
1304 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1305 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1306 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1307 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1309 &sensor_dev_attr_pwm1.dev_attr.attr,
1310 &sensor_dev_attr_pwm2.dev_attr.attr,
1311 &sensor_dev_attr_pwm3.dev_attr.attr,
1312 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1313 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1314 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1315 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1316 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1317 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1319 &sensor_dev_attr_in0_input.dev_attr.attr,
1320 &sensor_dev_attr_in1_input.dev_attr.attr,
1321 &sensor_dev_attr_in2_input.dev_attr.attr,
1322 &sensor_dev_attr_in3_input.dev_attr.attr,
1323 &sensor_dev_attr_in0_min.dev_attr.attr,
1324 &sensor_dev_attr_in1_min.dev_attr.attr,
1325 &sensor_dev_attr_in2_min.dev_attr.attr,
1326 &sensor_dev_attr_in3_min.dev_attr.attr,
1327 &sensor_dev_attr_in0_max.dev_attr.attr,
1328 &sensor_dev_attr_in1_max.dev_attr.attr,
1329 &sensor_dev_attr_in2_max.dev_attr.attr,
1330 &sensor_dev_attr_in3_max.dev_attr.attr,
1331 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1332 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1333 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1334 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1336 &sensor_dev_attr_temp1_input.dev_attr.attr,
1337 &sensor_dev_attr_temp2_input.dev_attr.attr,
1338 &sensor_dev_attr_temp3_input.dev_attr.attr,
1339 &sensor_dev_attr_temp1_min.dev_attr.attr,
1340 &sensor_dev_attr_temp2_min.dev_attr.attr,
1341 &sensor_dev_attr_temp3_min.dev_attr.attr,
1342 &sensor_dev_attr_temp1_max.dev_attr.attr,
1343 &sensor_dev_attr_temp2_max.dev_attr.attr,
1344 &sensor_dev_attr_temp3_max.dev_attr.attr,
1345 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1346 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1347 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1348 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1349 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1351 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1352 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1353 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1354 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1355 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1356 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1358 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1359 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1360 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1361 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1362 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1363 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1364 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1365 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1366 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1369 &dev_attr_cpu0_vid.attr,
1370 &dev_attr_alarms.attr,
1374 static const struct attribute_group lm85_group = {
1375 .attrs = lm85_attributes,
1378 static struct attribute *lm85_attributes_minctl[] = {
1379 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1380 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1381 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1385 static const struct attribute_group lm85_group_minctl = {
1386 .attrs = lm85_attributes_minctl,
1389 static struct attribute *lm85_attributes_temp_off[] = {
1390 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1391 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1392 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1396 static const struct attribute_group lm85_group_temp_off = {
1397 .attrs = lm85_attributes_temp_off,
1400 static struct attribute *lm85_attributes_in4[] = {
1401 &sensor_dev_attr_in4_input.dev_attr.attr,
1402 &sensor_dev_attr_in4_min.dev_attr.attr,
1403 &sensor_dev_attr_in4_max.dev_attr.attr,
1404 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1408 static const struct attribute_group lm85_group_in4 = {
1409 .attrs = lm85_attributes_in4,
1412 static struct attribute *lm85_attributes_in567[] = {
1413 &sensor_dev_attr_in5_input.dev_attr.attr,
1414 &sensor_dev_attr_in6_input.dev_attr.attr,
1415 &sensor_dev_attr_in7_input.dev_attr.attr,
1416 &sensor_dev_attr_in5_min.dev_attr.attr,
1417 &sensor_dev_attr_in6_min.dev_attr.attr,
1418 &sensor_dev_attr_in7_min.dev_attr.attr,
1419 &sensor_dev_attr_in5_max.dev_attr.attr,
1420 &sensor_dev_attr_in6_max.dev_attr.attr,
1421 &sensor_dev_attr_in7_max.dev_attr.attr,
1422 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1423 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1424 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1428 static const struct attribute_group lm85_group_in567 = {
1429 .attrs = lm85_attributes_in567,
1432 static void lm85_init_client(struct i2c_client *client)
1436 /* Start monitoring if needed */
1437 value = lm85_read_value(client, LM85_REG_CONFIG);
1438 if (!(value & 0x01)) {
1439 dev_info(&client->dev, "Starting monitoring\n");
1440 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1443 /* Warn about unusual configuration bits */
1445 dev_warn(&client->dev, "Device configuration is locked\n");
1446 if (!(value & 0x04))
1447 dev_warn(&client->dev, "Device is not ready\n");
1450 static int lm85_is_fake(struct i2c_client *client)
1453 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1454 * emulate the former except that it has no hardware monitoring function
1455 * so the readings are always 0.
1460 for (i = 0; i < 8; i++) {
1461 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1462 fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1463 if (in_temp != 0x00 || fan != 0xff)
1470 /* Return 0 if detection is successful, -ENODEV otherwise */
1471 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
1473 struct i2c_adapter *adapter = client->adapter;
1474 int address = client->addr;
1475 const char *type_name = NULL;
1476 int company, verstep;
1478 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1479 /* We need to be able to do byte I/O */
1483 /* Determine the chip type */
1484 company = lm85_read_value(client, LM85_REG_COMPANY);
1485 verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1487 dev_dbg(&adapter->dev,
1488 "Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1489 address, company, verstep);
1491 if (company == LM85_COMPANY_NATIONAL) {
1493 case LM85_VERSTEP_LM85C:
1494 type_name = "lm85c";
1496 case LM85_VERSTEP_LM85B:
1497 type_name = "lm85b";
1499 case LM85_VERSTEP_LM96000_1:
1500 case LM85_VERSTEP_LM96000_2:
1501 /* Check for Winbond WPCD377I */
1502 if (lm85_is_fake(client)) {
1503 dev_dbg(&adapter->dev,
1504 "Found Winbond WPCD377I, ignoring\n");
1507 type_name = "lm96000";
1510 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1512 case LM85_VERSTEP_ADM1027:
1513 type_name = "adm1027";
1515 case LM85_VERSTEP_ADT7463:
1516 case LM85_VERSTEP_ADT7463C:
1517 type_name = "adt7463";
1519 case LM85_VERSTEP_ADT7468_1:
1520 case LM85_VERSTEP_ADT7468_2:
1521 type_name = "adt7468";
1524 } else if (company == LM85_COMPANY_SMSC) {
1526 case LM85_VERSTEP_EMC6D100_A0:
1527 case LM85_VERSTEP_EMC6D100_A1:
1528 /* Note: we can't tell a '100 from a '101 */
1529 type_name = "emc6d100";
1531 case LM85_VERSTEP_EMC6D102:
1532 type_name = "emc6d102";
1534 case LM85_VERSTEP_EMC6D103_A0:
1535 case LM85_VERSTEP_EMC6D103_A1:
1536 type_name = "emc6d103";
1538 case LM85_VERSTEP_EMC6D103S:
1539 type_name = "emc6d103s";
1547 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1552 static int lm85_probe(struct i2c_client *client, const struct i2c_device_id *id)
1554 struct device *dev = &client->dev;
1555 struct device *hwmon_dev;
1556 struct lm85_data *data;
1559 data = devm_kzalloc(dev, sizeof(struct lm85_data), GFP_KERNEL);
1563 data->client = client;
1564 if (client->dev.of_node)
1565 data->type = (enum chips)of_device_get_match_data(&client->dev);
1567 data->type = id->driver_data;
1568 mutex_init(&data->update_lock);
1570 /* Fill in the chip specific driver values */
1571 switch (data->type) {
1579 data->freq_map = adm1027_freq_map;
1580 data->freq_map_size = ARRAY_SIZE(adm1027_freq_map);
1583 data->freq_map = lm96000_freq_map;
1584 data->freq_map_size = ARRAY_SIZE(lm96000_freq_map);
1587 data->freq_map = lm85_freq_map;
1588 data->freq_map_size = ARRAY_SIZE(lm85_freq_map);
1591 /* Set the VRM version */
1592 data->vrm = vid_which_vrm();
1594 /* Initialize the LM85 chip */
1595 lm85_init_client(client);
1598 data->groups[idx++] = &lm85_group;
1600 /* minctl and temp_off exist on all chips except emc6d103s */
1601 if (data->type != emc6d103s) {
1602 data->groups[idx++] = &lm85_group_minctl;
1603 data->groups[idx++] = &lm85_group_temp_off;
1607 * The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1608 * as a sixth digital VID input rather than an analog input.
1610 if (data->type == adt7463 || data->type == adt7468) {
1611 u8 vid = lm85_read_value(client, LM85_REG_VID);
1613 data->has_vid5 = true;
1616 if (!data->has_vid5)
1617 data->groups[idx++] = &lm85_group_in4;
1619 /* The EMC6D100 has 3 additional voltage inputs */
1620 if (data->type == emc6d100)
1621 data->groups[idx++] = &lm85_group_in567;
1623 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
1624 data, data->groups);
1625 return PTR_ERR_OR_ZERO(hwmon_dev);
1628 static const struct i2c_device_id lm85_id[] = {
1629 { "adm1027", adm1027 },
1630 { "adt7463", adt7463 },
1631 { "adt7468", adt7468 },
1635 { "lm96000", lm96000 },
1636 { "emc6d100", emc6d100 },
1637 { "emc6d101", emc6d100 },
1638 { "emc6d102", emc6d102 },
1639 { "emc6d103", emc6d103 },
1640 { "emc6d103s", emc6d103s },
1643 MODULE_DEVICE_TABLE(i2c, lm85_id);
1645 static const struct of_device_id lm85_of_match[] = {
1647 .compatible = "adi,adm1027",
1648 .data = (void *)adm1027
1651 .compatible = "adi,adt7463",
1652 .data = (void *)adt7463
1655 .compatible = "adi,adt7468",
1656 .data = (void *)adt7468
1659 .compatible = "national,lm85",
1660 .data = (void *)lm85
1663 .compatible = "national,lm85b",
1664 .data = (void *)lm85
1667 .compatible = "national,lm85c",
1668 .data = (void *)lm85
1671 .compatible = "ti,lm96000",
1672 .data = (void *)lm96000
1675 .compatible = "smsc,emc6d100",
1676 .data = (void *)emc6d100
1679 .compatible = "smsc,emc6d101",
1680 .data = (void *)emc6d100
1683 .compatible = "smsc,emc6d102",
1684 .data = (void *)emc6d102
1687 .compatible = "smsc,emc6d103",
1688 .data = (void *)emc6d103
1691 .compatible = "smsc,emc6d103s",
1692 .data = (void *)emc6d103s
1696 MODULE_DEVICE_TABLE(of, lm85_of_match);
1698 static struct i2c_driver lm85_driver = {
1699 .class = I2C_CLASS_HWMON,
1702 .of_match_table = of_match_ptr(lm85_of_match),
1704 .probe = lm85_probe,
1705 .id_table = lm85_id,
1706 .detect = lm85_detect,
1707 .address_list = normal_i2c,
1710 module_i2c_driver(lm85_driver);
1712 MODULE_LICENSE("GPL");
1713 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1714 "Margit Schubert-While <margitsw@t-online.de>, "
1715 "Justin Thiessen <jthiessen@penguincomputing.com>");
1716 MODULE_DESCRIPTION("LM85-B, LM85-C driver");