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Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
[linux-2.6/mini2440.git] / drivers / hwmon / lm85.c
blobb251d8674b41a1c45708c5ee6647a668b7d0cfbf
1 /*
2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware
3 monitoring
4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
8 Copyright (C) 2007, 2008 Jean Delvare <khali@linux-fr.org>
9
10 Chip details at <http://www.national.com/ds/LM/LM85.pdf>
11
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.
16
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.
21
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.
25 */
26
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>
37
38 /* Addresses to scan */
39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
40
41 /* Insmod parameters */
42 I2C_CLIENT_INSMOD_7(lm85b, lm85c, adm1027, adt7463, adt7468, emc6d100,
43 emc6d102);
44
45 /* The LM85 registers */
46
47 #define LM85_REG_IN(nr) (0x20 + (nr))
48 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
49 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
50
51 #define LM85_REG_TEMP(nr) (0x25 + (nr))
52 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
53 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
54
55 /* Fan speeds are LSB, MSB (2 bytes) */
56 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
57 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
58
59 #define LM85_REG_PWM(nr) (0x30 + (nr))
60
61 #define LM85_REG_COMPANY 0x3e
62 #define LM85_REG_VERSTEP 0x3f
63
64 #define ADT7468_REG_CFG5 0x7c
65 #define ADT7468_OFF64 0x01
66 #define IS_ADT7468_OFF64(data) \
67 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
68
69 /* These are the recognized values for the above regs */
70 #define LM85_COMPANY_NATIONAL 0x01
71 #define LM85_COMPANY_ANALOG_DEV 0x41
72 #define LM85_COMPANY_SMSC 0x5c
73 #define LM85_VERSTEP_VMASK 0xf0
74 #define LM85_VERSTEP_GENERIC 0x60
75 #define LM85_VERSTEP_GENERIC2 0x70
76 #define LM85_VERSTEP_LM85C 0x60
77 #define LM85_VERSTEP_LM85B 0x62
78 #define LM85_VERSTEP_ADM1027 0x60
79 #define LM85_VERSTEP_ADT7463 0x62
80 #define LM85_VERSTEP_ADT7463C 0x6A
81 #define LM85_VERSTEP_ADT7468_1 0x71
82 #define LM85_VERSTEP_ADT7468_2 0x72
83 #define LM85_VERSTEP_EMC6D100_A0 0x60
84 #define LM85_VERSTEP_EMC6D100_A1 0x61
85 #define LM85_VERSTEP_EMC6D102 0x65
86
87 #define LM85_REG_CONFIG 0x40
88
89 #define LM85_REG_ALARM1 0x41
90 #define LM85_REG_ALARM2 0x42
91
92 #define LM85_REG_VID 0x43
93
94 /* Automated FAN control */
95 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
96 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
97 #define LM85_REG_AFAN_SPIKE1 0x62
98 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
99 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
100 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
101 #define LM85_REG_AFAN_HYST1 0x6d
102 #define LM85_REG_AFAN_HYST2 0x6e
103
104 #define ADM1027_REG_EXTEND_ADC1 0x76
105 #define ADM1027_REG_EXTEND_ADC2 0x77
106
107 #define EMC6D100_REG_ALARM3 0x7d
108 /* IN5, IN6 and IN7 */
109 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
110 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
111 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
112 #define EMC6D102_REG_EXTEND_ADC1 0x85
113 #define EMC6D102_REG_EXTEND_ADC2 0x86
114 #define EMC6D102_REG_EXTEND_ADC3 0x87
115 #define EMC6D102_REG_EXTEND_ADC4 0x88
116
117
118 /* Conversions. Rounding and limit checking is only done on the TO_REG
119 variants. Note that you should be a bit careful with which arguments
120 these macros are called: arguments may be evaluated more than once.
121 */
122
123 /* IN are scaled acording to built-in resistors */
124 static const int lm85_scaling[] = { /* .001 Volts */
125 2500, 2250, 3300, 5000, 12000,
126 3300, 1500, 1800 /*EMC6D100*/
127 };
128 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
129
130 #define INS_TO_REG(n, val) \
131 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
132
133 #define INSEXT_FROM_REG(n, val, ext) \
134 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
135
136 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
137
138 /* FAN speed is measured using 90kHz clock */
139 static inline u16 FAN_TO_REG(unsigned long val)
140 {
141 if (!val)
142 return 0xffff;
143 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
144 }
145 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
146 5400000 / (val))
147
148 /* Temperature is reported in .001 degC increments */
149 #define TEMP_TO_REG(val) \
150 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
151 #define TEMPEXT_FROM_REG(val, ext) \
152 SCALE(((val) << 4) + (ext), 16, 1000)
153 #define TEMP_FROM_REG(val) ((val) * 1000)
154
155 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
156 #define PWM_FROM_REG(val) (val)
157
158
159 /* ZONEs have the following parameters:
160 * Limit (low) temp, 1. degC
161 * Hysteresis (below limit), 1. degC (0-15)
162 * Range of speed control, .1 degC (2-80)
163 * Critical (high) temp, 1. degC
164 *
165 * FAN PWMs have the following parameters:
166 * Reference Zone, 1, 2, 3, etc.
167 * Spinup time, .05 sec
168 * PWM value at limit/low temp, 1 count
169 * PWM Frequency, 1. Hz
170 * PWM is Min or OFF below limit, flag
171 * Invert PWM output, flag
172 *
173 * Some chips filter the temp, others the fan.
174 * Filter constant (or disabled) .1 seconds
175 */
176
177 /* These are the zone temperature range encodings in .001 degree C */
178 static const int lm85_range_map[] = {
179 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
180 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
181 };
182
183 static int RANGE_TO_REG(int range)
184 {
185 int i;
186
187 /* Find the closest match */
188 for (i = 0; i < 15; ++i) {
189 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
190 break;
191 }
192
193 return i;
194 }
195 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
196
197 /* These are the PWM frequency encodings */
198 static const int lm85_freq_map[8] = { /* 1 Hz */
199 10, 15, 23, 30, 38, 47, 61, 94
200 };
201 static const int adm1027_freq_map[8] = { /* 1 Hz */
202 11, 15, 22, 29, 35, 44, 59, 88
203 };
204
205 static int FREQ_TO_REG(const int *map, int freq)
206 {
207 int i;
208
209 /* Find the closest match */
210 for (i = 0; i < 7; ++i)
211 if (freq <= (map[i] + map[i + 1]) / 2)
212 break;
213 return i;
214 }
215
216 static int FREQ_FROM_REG(const int *map, u8 reg)
217 {
218 return map[reg & 0x07];
219 }
220
221 /* Since we can't use strings, I'm abusing these numbers
222 * to stand in for the following meanings:
223 * 1 -- PWM responds to Zone 1
224 * 2 -- PWM responds to Zone 2
225 * 3 -- PWM responds to Zone 3
226 * 23 -- PWM responds to the higher temp of Zone 2 or 3
227 * 123 -- PWM responds to highest of Zone 1, 2, or 3
228 * 0 -- PWM is always at 0% (ie, off)
229 * -1 -- PWM is always at 100%
230 * -2 -- PWM responds to manual control
231 */
232
233 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
234 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
235
236 static int ZONE_TO_REG(int zone)
237 {
238 int i;
239
240 for (i = 0; i <= 7; ++i)
241 if (zone == lm85_zone_map[i])
242 break;
243 if (i > 7) /* Not found. */
244 i = 3; /* Always 100% */
245 return i << 5;
246 }
247
248 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
249 #define HYST_FROM_REG(val) ((val) * 1000)
250
251 /* Chip sampling rates
252 *
253 * Some sensors are not updated more frequently than once per second
254 * so it doesn't make sense to read them more often than that.
255 * We cache the results and return the saved data if the driver
256 * is called again before a second has elapsed.
257 *
258 * Also, there is significant configuration data for this chip
259 * given the automatic PWM fan control that is possible. There
260 * are about 47 bytes of config data to only 22 bytes of actual
261 * readings. So, we keep the config data up to date in the cache
262 * when it is written and only sample it once every 1 *minute*
263 */
264 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
265 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
266
267 /* LM85 can automatically adjust fan speeds based on temperature
268 * This structure encapsulates an entire Zone config. There are
269 * three zones (one for each temperature input) on the lm85
270 */
271 struct lm85_zone {
272 s8 limit; /* Low temp limit */
273 u8 hyst; /* Low limit hysteresis. (0-15) */
274 u8 range; /* Temp range, encoded */
275 s8 critical; /* "All fans ON" temp limit */
276 u8 off_desired; /* Actual "off" temperature specified. Preserved
277 * to prevent "drift" as other autofan control
278 * values change.
279 */
280 u8 max_desired; /* Actual "max" temperature specified. Preserved
281 * to prevent "drift" as other autofan control
282 * values change.
283 */
284 };
285
286 struct lm85_autofan {
287 u8 config; /* Register value */
288 u8 min_pwm; /* Minimum PWM value, encoded */
289 u8 min_off; /* Min PWM or OFF below "limit", flag */
290 };
291
292 /* For each registered chip, we need to keep some data in memory.
293 The structure is dynamically allocated. */
294 struct lm85_data {
295 struct device *hwmon_dev;
296 const int *freq_map;
297 enum chips type;
298
299 struct mutex update_lock;
300 int valid; /* !=0 if following fields are valid */
301 unsigned long last_reading; /* In jiffies */
302 unsigned long last_config; /* In jiffies */
303
304 u8 in[8]; /* Register value */
305 u8 in_max[8]; /* Register value */
306 u8 in_min[8]; /* Register value */
307 s8 temp[3]; /* Register value */
308 s8 temp_min[3]; /* Register value */
309 s8 temp_max[3]; /* Register value */
310 u16 fan[4]; /* Register value */
311 u16 fan_min[4]; /* Register value */
312 u8 pwm[3]; /* Register value */
313 u8 pwm_freq[3]; /* Register encoding */
314 u8 temp_ext[3]; /* Decoded values */
315 u8 in_ext[8]; /* Decoded values */
316 u8 vid; /* Register value */
317 u8 vrm; /* VRM version */
318 u32 alarms; /* Register encoding, combined */
319 u8 cfg5; /* Config Register 5 on ADT7468 */
320 struct lm85_autofan autofan[3];
321 struct lm85_zone zone[3];
322 };
323
324 static int lm85_detect(struct i2c_client *client, int kind,
325 struct i2c_board_info *info);
326 static int lm85_probe(struct i2c_client *client,
327 const struct i2c_device_id *id);
328 static int lm85_remove(struct i2c_client *client);
329
330 static int lm85_read_value(struct i2c_client *client, u8 reg);
331 static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
332 static struct lm85_data *lm85_update_device(struct device *dev);
333
334
335 static const struct i2c_device_id lm85_id[] = {
336 { "adm1027", adm1027 },
337 { "adt7463", adt7463 },
338 { "adt7468", adt7468 },
339 { "lm85", any_chip },
340 { "lm85b", lm85b },
341 { "lm85c", lm85c },
342 { "emc6d100", emc6d100 },
343 { "emc6d101", emc6d100 },
344 { "emc6d102", emc6d102 },
345 { }
346 };
347 MODULE_DEVICE_TABLE(i2c, lm85_id);
348
349 static struct i2c_driver lm85_driver = {
350 .class = I2C_CLASS_HWMON,
351 .driver = {
352 .name = "lm85",
353 },
354 .probe = lm85_probe,
355 .remove = lm85_remove,
356 .id_table = lm85_id,
357 .detect = lm85_detect,
358 .address_data = &addr_data,
359 };
360
361
362 /* 4 Fans */
363 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
364 char *buf)
365 {
366 int nr = to_sensor_dev_attr(attr)->index;
367 struct lm85_data *data = lm85_update_device(dev);
368 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
369 }
370
371 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
372 char *buf)
373 {
374 int nr = to_sensor_dev_attr(attr)->index;
375 struct lm85_data *data = lm85_update_device(dev);
376 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
377 }
378
379 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
380 const char *buf, size_t count)
381 {
382 int nr = to_sensor_dev_attr(attr)->index;
383 struct i2c_client *client = to_i2c_client(dev);
384 struct lm85_data *data = i2c_get_clientdata(client);
385 unsigned long val = simple_strtoul(buf, NULL, 10);
386
387 mutex_lock(&data->update_lock);
388 data->fan_min[nr] = FAN_TO_REG(val);
389 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
390 mutex_unlock(&data->update_lock);
391 return count;
392 }
393
394 #define show_fan_offset(offset) \
395 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
396 show_fan, NULL, offset - 1); \
397 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
398 show_fan_min, set_fan_min, offset - 1)
399
400 show_fan_offset(1);
401 show_fan_offset(2);
402 show_fan_offset(3);
403 show_fan_offset(4);
404
405 /* vid, vrm, alarms */
406
407 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
408 char *buf)
409 {
410 struct lm85_data *data = lm85_update_device(dev);
411 int vid;
412
413 if ((data->type == adt7463 || data->type == adt7468) &&
414 (data->vid & 0x80)) {
415 /* 6-pin VID (VRM 10) */
416 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
417 } else {
418 /* 5-pin VID (VRM 9) */
419 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
420 }
421
422 return sprintf(buf, "%d\n", vid);
423 }
424
425 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
426
427 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
428 char *buf)
429 {
430 struct lm85_data *data = dev_get_drvdata(dev);
431 return sprintf(buf, "%ld\n", (long) data->vrm);
432 }
433
434 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
435 const char *buf, size_t count)
436 {
437 struct lm85_data *data = dev_get_drvdata(dev);
438 data->vrm = simple_strtoul(buf, NULL, 10);
439 return count;
440 }
441
442 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
443
444 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
445 *attr, char *buf)
446 {
447 struct lm85_data *data = lm85_update_device(dev);
448 return sprintf(buf, "%u\n", data->alarms);
449 }
450
451 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
452
453 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
454 char *buf)
455 {
456 int nr = to_sensor_dev_attr(attr)->index;
457 struct lm85_data *data = lm85_update_device(dev);
458 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
459 }
460
461 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
462 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
463 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
464 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
465 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
466 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
467 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
468 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
469 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
470 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
471 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
472 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
473 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
474 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
475 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
476 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
477 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
478
479 /* pwm */
480
481 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
482 char *buf)
483 {
484 int nr = to_sensor_dev_attr(attr)->index;
485 struct lm85_data *data = lm85_update_device(dev);
486 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
487 }
488
489 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
490 const char *buf, size_t count)
491 {
492 int nr = to_sensor_dev_attr(attr)->index;
493 struct i2c_client *client = to_i2c_client(dev);
494 struct lm85_data *data = i2c_get_clientdata(client);
495 long val = simple_strtol(buf, NULL, 10);
496
497 mutex_lock(&data->update_lock);
498 data->pwm[nr] = PWM_TO_REG(val);
499 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
500 mutex_unlock(&data->update_lock);
501 return count;
502 }
503
504 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
505 *attr, char *buf)
506 {
507 int nr = to_sensor_dev_attr(attr)->index;
508 struct lm85_data *data = lm85_update_device(dev);
509 int pwm_zone, enable;
510
511 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
512 switch (pwm_zone) {
513 case -1: /* PWM is always at 100% */
514 enable = 0;
515 break;
516 case 0: /* PWM is always at 0% */
517 case -2: /* PWM responds to manual control */
518 enable = 1;
519 break;
520 default: /* PWM in automatic mode */
521 enable = 2;
522 }
523 return sprintf(buf, "%d\n", enable);
524 }
525
526 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
527 *attr, const char *buf, size_t count)
528 {
529 int nr = to_sensor_dev_attr(attr)->index;
530 struct i2c_client *client = to_i2c_client(dev);
531 struct lm85_data *data = i2c_get_clientdata(client);
532 long val = simple_strtol(buf, NULL, 10);
533 u8 config;
534
535 switch (val) {
536 case 0:
537 config = 3;
538 break;
539 case 1:
540 config = 7;
541 break;
542 case 2:
543 /* Here we have to choose arbitrarily one of the 5 possible
544 configurations; I go for the safest */
545 config = 6;
546 break;
547 default:
548 return -EINVAL;
549 }
550
551 mutex_lock(&data->update_lock);
552 data->autofan[nr].config = lm85_read_value(client,
553 LM85_REG_AFAN_CONFIG(nr));
554 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
555 | (config << 5);
556 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
557 data->autofan[nr].config);
558 mutex_unlock(&data->update_lock);
559 return count;
560 }
561
562 static ssize_t show_pwm_freq(struct device *dev,
563 struct device_attribute *attr, char *buf)
564 {
565 int nr = to_sensor_dev_attr(attr)->index;
566 struct lm85_data *data = lm85_update_device(dev);
567 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->freq_map,
568 data->pwm_freq[nr]));
569 }
570
571 static ssize_t set_pwm_freq(struct device *dev,
572 struct device_attribute *attr, const char *buf, size_t count)
573 {
574 int nr = to_sensor_dev_attr(attr)->index;
575 struct i2c_client *client = to_i2c_client(dev);
576 struct lm85_data *data = i2c_get_clientdata(client);
577 long val = simple_strtol(buf, NULL, 10);
578
579 mutex_lock(&data->update_lock);
580 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
581 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
582 (data->zone[nr].range << 4)
583 | data->pwm_freq[nr]);
584 mutex_unlock(&data->update_lock);
585 return count;
586 }
587
588 #define show_pwm_reg(offset) \
589 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
590 show_pwm, set_pwm, offset - 1); \
591 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
592 show_pwm_enable, set_pwm_enable, offset - 1); \
593 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
594 show_pwm_freq, set_pwm_freq, offset - 1)
595
596 show_pwm_reg(1);
597 show_pwm_reg(2);
598 show_pwm_reg(3);
599
600 /* Voltages */
601
602 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
603 char *buf)
604 {
605 int nr = to_sensor_dev_attr(attr)->index;
606 struct lm85_data *data = lm85_update_device(dev);
607 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
608 data->in_ext[nr]));
609 }
610
611 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
612 char *buf)
613 {
614 int nr = to_sensor_dev_attr(attr)->index;
615 struct lm85_data *data = lm85_update_device(dev);
616 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
617 }
618
619 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
620 const char *buf, size_t count)
621 {
622 int nr = to_sensor_dev_attr(attr)->index;
623 struct i2c_client *client = to_i2c_client(dev);
624 struct lm85_data *data = i2c_get_clientdata(client);
625 long val = simple_strtol(buf, NULL, 10);
626
627 mutex_lock(&data->update_lock);
628 data->in_min[nr] = INS_TO_REG(nr, val);
629 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
630 mutex_unlock(&data->update_lock);
631 return count;
632 }
633
634 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
635 char *buf)
636 {
637 int nr = to_sensor_dev_attr(attr)->index;
638 struct lm85_data *data = lm85_update_device(dev);
639 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
640 }
641
642 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
643 const char *buf, size_t count)
644 {
645 int nr = to_sensor_dev_attr(attr)->index;
646 struct i2c_client *client = to_i2c_client(dev);
647 struct lm85_data *data = i2c_get_clientdata(client);
648 long val = simple_strtol(buf, NULL, 10);
649
650 mutex_lock(&data->update_lock);
651 data->in_max[nr] = INS_TO_REG(nr, val);
652 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
653 mutex_unlock(&data->update_lock);
654 return count;
655 }
656
657 #define show_in_reg(offset) \
658 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
659 show_in, NULL, offset); \
660 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
661 show_in_min, set_in_min, offset); \
662 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
663 show_in_max, set_in_max, offset)
664
665 show_in_reg(0);
666 show_in_reg(1);
667 show_in_reg(2);
668 show_in_reg(3);
669 show_in_reg(4);
670 show_in_reg(5);
671 show_in_reg(6);
672 show_in_reg(7);
673
674 /* Temps */
675
676 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
677 char *buf)
678 {
679 int nr = to_sensor_dev_attr(attr)->index;
680 struct lm85_data *data = lm85_update_device(dev);
681 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
682 data->temp_ext[nr]));
683 }
684
685 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
686 char *buf)
687 {
688 int nr = to_sensor_dev_attr(attr)->index;
689 struct lm85_data *data = lm85_update_device(dev);
690 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
691 }
692
693 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
694 const char *buf, size_t count)
695 {
696 int nr = to_sensor_dev_attr(attr)->index;
697 struct i2c_client *client = to_i2c_client(dev);
698 struct lm85_data *data = i2c_get_clientdata(client);
699 long val = simple_strtol(buf, NULL, 10);
700
701 if (IS_ADT7468_OFF64(data))
702 val += 64;
703
704 mutex_lock(&data->update_lock);
705 data->temp_min[nr] = TEMP_TO_REG(val);
706 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
707 mutex_unlock(&data->update_lock);
708 return count;
709 }
710
711 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
712 char *buf)
713 {
714 int nr = to_sensor_dev_attr(attr)->index;
715 struct lm85_data *data = lm85_update_device(dev);
716 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
717 }
718
719 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
720 const char *buf, size_t count)
721 {
722 int nr = to_sensor_dev_attr(attr)->index;
723 struct i2c_client *client = to_i2c_client(dev);
724 struct lm85_data *data = i2c_get_clientdata(client);
725 long val = simple_strtol(buf, NULL, 10);
726
727 if (IS_ADT7468_OFF64(data))
728 val += 64;
729
730 mutex_lock(&data->update_lock);
731 data->temp_max[nr] = TEMP_TO_REG(val);
732 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
733 mutex_unlock(&data->update_lock);
734 return count;
735 }
736
737 #define show_temp_reg(offset) \
738 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
739 show_temp, NULL, offset - 1); \
740 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
741 show_temp_min, set_temp_min, offset - 1); \
742 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
743 show_temp_max, set_temp_max, offset - 1);
744
745 show_temp_reg(1);
746 show_temp_reg(2);
747 show_temp_reg(3);
748
749
750 /* Automatic PWM control */
751
752 static ssize_t show_pwm_auto_channels(struct device *dev,
753 struct device_attribute *attr, char *buf)
754 {
755 int nr = to_sensor_dev_attr(attr)->index;
756 struct lm85_data *data = lm85_update_device(dev);
757 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
758 }
759
760 static ssize_t set_pwm_auto_channels(struct device *dev,
761 struct device_attribute *attr, const char *buf, size_t count)
762 {
763 int nr = to_sensor_dev_attr(attr)->index;
764 struct i2c_client *client = to_i2c_client(dev);
765 struct lm85_data *data = i2c_get_clientdata(client);
766 long val = simple_strtol(buf, NULL, 10);
767
768 mutex_lock(&data->update_lock);
769 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
770 | ZONE_TO_REG(val);
771 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
772 data->autofan[nr].config);
773 mutex_unlock(&data->update_lock);
774 return count;
775 }
776
777 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
778 struct device_attribute *attr, char *buf)
779 {
780 int nr = to_sensor_dev_attr(attr)->index;
781 struct lm85_data *data = lm85_update_device(dev);
782 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
783 }
784
785 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
786 struct device_attribute *attr, const char *buf, size_t count)
787 {
788 int nr = to_sensor_dev_attr(attr)->index;
789 struct i2c_client *client = to_i2c_client(dev);
790 struct lm85_data *data = i2c_get_clientdata(client);
791 long val = simple_strtol(buf, NULL, 10);
792
793 mutex_lock(&data->update_lock);
794 data->autofan[nr].min_pwm = PWM_TO_REG(val);
795 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
796 data->autofan[nr].min_pwm);
797 mutex_unlock(&data->update_lock);
798 return count;
799 }
800
801 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
802 struct device_attribute *attr, char *buf)
803 {
804 int nr = to_sensor_dev_attr(attr)->index;
805 struct lm85_data *data = lm85_update_device(dev);
806 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
807 }
808
809 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
810 struct device_attribute *attr, const char *buf, size_t count)
811 {
812 int nr = to_sensor_dev_attr(attr)->index;
813 struct i2c_client *client = to_i2c_client(dev);
814 struct lm85_data *data = i2c_get_clientdata(client);
815 long val = simple_strtol(buf, NULL, 10);
816 u8 tmp;
817
818 mutex_lock(&data->update_lock);
819 data->autofan[nr].min_off = val;
820 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
821 tmp &= ~(0x20 << nr);
822 if (data->autofan[nr].min_off)
823 tmp |= 0x20 << nr;
824 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
825 mutex_unlock(&data->update_lock);
826 return count;
827 }
828
829 #define pwm_auto(offset) \
830 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
831 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
832 set_pwm_auto_channels, offset - 1); \
833 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
834 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
835 set_pwm_auto_pwm_min, offset - 1); \
836 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
837 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
838 set_pwm_auto_pwm_minctl, offset - 1)
839
840 pwm_auto(1);
841 pwm_auto(2);
842 pwm_auto(3);
843
844 /* Temperature settings for automatic PWM control */
845
846 static ssize_t show_temp_auto_temp_off(struct device *dev,
847 struct device_attribute *attr, char *buf)
848 {
849 int nr = to_sensor_dev_attr(attr)->index;
850 struct lm85_data *data = lm85_update_device(dev);
851 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
852 HYST_FROM_REG(data->zone[nr].hyst));
853 }
854
855 static ssize_t set_temp_auto_temp_off(struct device *dev,
856 struct device_attribute *attr, const char *buf, size_t count)
857 {
858 int nr = to_sensor_dev_attr(attr)->index;
859 struct i2c_client *client = to_i2c_client(dev);
860 struct lm85_data *data = i2c_get_clientdata(client);
861 int min;
862 long val = simple_strtol(buf, NULL, 10);
863
864 mutex_lock(&data->update_lock);
865 min = TEMP_FROM_REG(data->zone[nr].limit);
866 data->zone[nr].off_desired = TEMP_TO_REG(val);
867 data->zone[nr].hyst = HYST_TO_REG(min - val);
868 if (nr == 0 || nr == 1) {
869 lm85_write_value(client, LM85_REG_AFAN_HYST1,
870 (data->zone[0].hyst << 4)
871 | data->zone[1].hyst);
872 } else {
873 lm85_write_value(client, LM85_REG_AFAN_HYST2,
874 (data->zone[2].hyst << 4));
875 }
876 mutex_unlock(&data->update_lock);
877 return count;
878 }
879
880 static ssize_t show_temp_auto_temp_min(struct device *dev,
881 struct device_attribute *attr, char *buf)
882 {
883 int nr = to_sensor_dev_attr(attr)->index;
884 struct lm85_data *data = lm85_update_device(dev);
885 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
886 }
887
888 static ssize_t set_temp_auto_temp_min(struct device *dev,
889 struct device_attribute *attr, const char *buf, size_t count)
890 {
891 int nr = to_sensor_dev_attr(attr)->index;
892 struct i2c_client *client = to_i2c_client(dev);
893 struct lm85_data *data = i2c_get_clientdata(client);
894 long val = simple_strtol(buf, NULL, 10);
895
896 mutex_lock(&data->update_lock);
897 data->zone[nr].limit = TEMP_TO_REG(val);
898 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
899 data->zone[nr].limit);
900
901 /* Update temp_auto_max and temp_auto_range */
902 data->zone[nr].range = RANGE_TO_REG(
903 TEMP_FROM_REG(data->zone[nr].max_desired) -
904 TEMP_FROM_REG(data->zone[nr].limit));
905 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
906 ((data->zone[nr].range & 0x0f) << 4)
907 | (data->pwm_freq[nr] & 0x07));
908
909 /* Update temp_auto_hyst and temp_auto_off */
910 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
911 data->zone[nr].limit) - TEMP_FROM_REG(
912 data->zone[nr].off_desired));
913 if (nr == 0 || nr == 1) {
914 lm85_write_value(client, LM85_REG_AFAN_HYST1,
915 (data->zone[0].hyst << 4)
916 | data->zone[1].hyst);
917 } else {
918 lm85_write_value(client, LM85_REG_AFAN_HYST2,
919 (data->zone[2].hyst << 4));
920 }
921 mutex_unlock(&data->update_lock);
922 return count;
923 }
924
925 static ssize_t show_temp_auto_temp_max(struct device *dev,
926 struct device_attribute *attr, char *buf)
927 {
928 int nr = to_sensor_dev_attr(attr)->index;
929 struct lm85_data *data = lm85_update_device(dev);
930 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
931 RANGE_FROM_REG(data->zone[nr].range));
932 }
933
934 static ssize_t set_temp_auto_temp_max(struct device *dev,
935 struct device_attribute *attr, const char *buf, size_t count)
936 {
937 int nr = to_sensor_dev_attr(attr)->index;
938 struct i2c_client *client = to_i2c_client(dev);
939 struct lm85_data *data = i2c_get_clientdata(client);
940 int min;
941 long val = simple_strtol(buf, NULL, 10);
942
943 mutex_lock(&data->update_lock);
944 min = TEMP_FROM_REG(data->zone[nr].limit);
945 data->zone[nr].max_desired = TEMP_TO_REG(val);
946 data->zone[nr].range = RANGE_TO_REG(
947 val - min);
948 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
949 ((data->zone[nr].range & 0x0f) << 4)
950 | (data->pwm_freq[nr] & 0x07));
951 mutex_unlock(&data->update_lock);
952 return count;
953 }
954
955 static ssize_t show_temp_auto_temp_crit(struct device *dev,
956 struct device_attribute *attr, char *buf)
957 {
958 int nr = to_sensor_dev_attr(attr)->index;
959 struct lm85_data *data = lm85_update_device(dev);
960 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
961 }
962
963 static ssize_t set_temp_auto_temp_crit(struct device *dev,
964 struct device_attribute *attr, const char *buf, size_t count)
965 {
966 int nr = to_sensor_dev_attr(attr)->index;
967 struct i2c_client *client = to_i2c_client(dev);
968 struct lm85_data *data = i2c_get_clientdata(client);
969 long val = simple_strtol(buf, NULL, 10);
970
971 mutex_lock(&data->update_lock);
972 data->zone[nr].critical = TEMP_TO_REG(val);
973 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
974 data->zone[nr].critical);
975 mutex_unlock(&data->update_lock);
976 return count;
977 }
978
979 #define temp_auto(offset) \
980 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
981 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
982 set_temp_auto_temp_off, offset - 1); \
983 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
984 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
985 set_temp_auto_temp_min, offset - 1); \
986 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
987 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
988 set_temp_auto_temp_max, offset - 1); \
989 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
990 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
991 set_temp_auto_temp_crit, offset - 1);
992
993 temp_auto(1);
994 temp_auto(2);
995 temp_auto(3);
996
997 static struct attribute *lm85_attributes[] = {
998 &sensor_dev_attr_fan1_input.dev_attr.attr,
999 &sensor_dev_attr_fan2_input.dev_attr.attr,
1000 &sensor_dev_attr_fan3_input.dev_attr.attr,
1001 &sensor_dev_attr_fan4_input.dev_attr.attr,
1002 &sensor_dev_attr_fan1_min.dev_attr.attr,
1003 &sensor_dev_attr_fan2_min.dev_attr.attr,
1004 &sensor_dev_attr_fan3_min.dev_attr.attr,
1005 &sensor_dev_attr_fan4_min.dev_attr.attr,
1006 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1007 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1008 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1009 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1010
1011 &sensor_dev_attr_pwm1.dev_attr.attr,
1012 &sensor_dev_attr_pwm2.dev_attr.attr,
1013 &sensor_dev_attr_pwm3.dev_attr.attr,
1014 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1015 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1016 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1017 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1018 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1019 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1020
1021 &sensor_dev_attr_in0_input.dev_attr.attr,
1022 &sensor_dev_attr_in1_input.dev_attr.attr,
1023 &sensor_dev_attr_in2_input.dev_attr.attr,
1024 &sensor_dev_attr_in3_input.dev_attr.attr,
1025 &sensor_dev_attr_in0_min.dev_attr.attr,
1026 &sensor_dev_attr_in1_min.dev_attr.attr,
1027 &sensor_dev_attr_in2_min.dev_attr.attr,
1028 &sensor_dev_attr_in3_min.dev_attr.attr,
1029 &sensor_dev_attr_in0_max.dev_attr.attr,
1030 &sensor_dev_attr_in1_max.dev_attr.attr,
1031 &sensor_dev_attr_in2_max.dev_attr.attr,
1032 &sensor_dev_attr_in3_max.dev_attr.attr,
1033 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1034 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1035 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1036 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1037
1038 &sensor_dev_attr_temp1_input.dev_attr.attr,
1039 &sensor_dev_attr_temp2_input.dev_attr.attr,
1040 &sensor_dev_attr_temp3_input.dev_attr.attr,
1041 &sensor_dev_attr_temp1_min.dev_attr.attr,
1042 &sensor_dev_attr_temp2_min.dev_attr.attr,
1043 &sensor_dev_attr_temp3_min.dev_attr.attr,
1044 &sensor_dev_attr_temp1_max.dev_attr.attr,
1045 &sensor_dev_attr_temp2_max.dev_attr.attr,
1046 &sensor_dev_attr_temp3_max.dev_attr.attr,
1047 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1048 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1049 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1050 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1051 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1052
1053 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1054 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1055 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1056 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1057 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1058 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1059 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1060 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1061 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1062
1063 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1064 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1065 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1066 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1067 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1068 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1069 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1070 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1071 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1072 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1073 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1074 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1075
1076 &dev_attr_vrm.attr,
1077 &dev_attr_cpu0_vid.attr,
1078 &dev_attr_alarms.attr,
1079 NULL
1080 };
1081
1082 static const struct attribute_group lm85_group = {
1083 .attrs = lm85_attributes,
1084 };
1085
1086 static struct attribute *lm85_attributes_in4[] = {
1087 &sensor_dev_attr_in4_input.dev_attr.attr,
1088 &sensor_dev_attr_in4_min.dev_attr.attr,
1089 &sensor_dev_attr_in4_max.dev_attr.attr,
1090 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1091 NULL
1092 };
1093
1094 static const struct attribute_group lm85_group_in4 = {
1095 .attrs = lm85_attributes_in4,
1096 };
1097
1098 static struct attribute *lm85_attributes_in567[] = {
1099 &sensor_dev_attr_in5_input.dev_attr.attr,
1100 &sensor_dev_attr_in6_input.dev_attr.attr,
1101 &sensor_dev_attr_in7_input.dev_attr.attr,
1102 &sensor_dev_attr_in5_min.dev_attr.attr,
1103 &sensor_dev_attr_in6_min.dev_attr.attr,
1104 &sensor_dev_attr_in7_min.dev_attr.attr,
1105 &sensor_dev_attr_in5_max.dev_attr.attr,
1106 &sensor_dev_attr_in6_max.dev_attr.attr,
1107 &sensor_dev_attr_in7_max.dev_attr.attr,
1108 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1109 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1110 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1111 NULL
1112 };
1113
1114 static const struct attribute_group lm85_group_in567 = {
1115 .attrs = lm85_attributes_in567,
1116 };
1117
1118 static void lm85_init_client(struct i2c_client *client)
1119 {
1120 int value;
1121
1122 /* Start monitoring if needed */
1123 value = lm85_read_value(client, LM85_REG_CONFIG);
1124 if (!(value & 0x01)) {
1125 dev_info(&client->dev, "Starting monitoring\n");
1126 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1127 }
1128
1129 /* Warn about unusual configuration bits */
1130 if (value & 0x02)
1131 dev_warn(&client->dev, "Device configuration is locked\n");
1132 if (!(value & 0x04))
1133 dev_warn(&client->dev, "Device is not ready\n");
1134 }
1135
1136 /* Return 0 if detection is successful, -ENODEV otherwise */
1137 static int lm85_detect(struct i2c_client *client, int kind,
1138 struct i2c_board_info *info)
1139 {
1140 struct i2c_adapter *adapter = client->adapter;
1141 int address = client->addr;
1142 const char *type_name;
1143
1144 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1145 /* We need to be able to do byte I/O */
1146 return -ENODEV;
1147 }
1148
1149 /* If auto-detecting, determine the chip type */
1150 if (kind < 0) {
1151 int company = lm85_read_value(client, LM85_REG_COMPANY);
1152 int verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1153
1154 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
1155 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1156 address, company, verstep);
1157
1158 /* All supported chips have the version in common */
1159 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC &&
1160 (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) {
1161 dev_dbg(&adapter->dev, "Autodetection failed: "
1162 "unsupported version\n");
1163 return -ENODEV;
1164 }
1165 kind = any_chip;
1166
1167 /* Now, refine the detection */
1168 if (company == LM85_COMPANY_NATIONAL) {
1169 switch (verstep) {
1170 case LM85_VERSTEP_LM85C:
1171 kind = lm85c;
1172 break;
1173 case LM85_VERSTEP_LM85B:
1174 kind = lm85b;
1175 break;
1176 }
1177 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1178 switch (verstep) {
1179 case LM85_VERSTEP_ADM1027:
1180 kind = adm1027;
1181 break;
1182 case LM85_VERSTEP_ADT7463:
1183 case LM85_VERSTEP_ADT7463C:
1184 kind = adt7463;
1185 break;
1186 case LM85_VERSTEP_ADT7468_1:
1187 case LM85_VERSTEP_ADT7468_2:
1188 kind = adt7468;
1189 break;
1190 }
1191 } else if (company == LM85_COMPANY_SMSC) {
1192 switch (verstep) {
1193 case LM85_VERSTEP_EMC6D100_A0:
1194 case LM85_VERSTEP_EMC6D100_A1:
1195 /* Note: we can't tell a '100 from a '101 */
1196 kind = emc6d100;
1197 break;
1198 case LM85_VERSTEP_EMC6D102:
1199 kind = emc6d102;
1200 break;
1201 }
1202 } else {
1203 dev_dbg(&adapter->dev, "Autodetection failed: "
1204 "unknown vendor\n");
1205 return -ENODEV;
1206 }
1207 }
1208
1209 switch (kind) {
1210 case lm85b:
1211 type_name = "lm85b";
1212 break;
1213 case lm85c:
1214 type_name = "lm85c";
1215 break;
1216 case adm1027:
1217 type_name = "adm1027";
1218 break;
1219 case adt7463:
1220 type_name = "adt7463";
1221 break;
1222 case adt7468:
1223 type_name = "adt7468";
1224 break;
1225 case emc6d100:
1226 type_name = "emc6d100";
1227 break;
1228 case emc6d102:
1229 type_name = "emc6d102";
1230 break;
1231 default:
1232 type_name = "lm85";
1233 }
1234 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1235
1236 return 0;
1237 }
1238
1239 static int lm85_probe(struct i2c_client *client,
1240 const struct i2c_device_id *id)
1241 {
1242 struct lm85_data *data;
1243 int err;
1244
1245 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
1246 if (!data)
1247 return -ENOMEM;
1248
1249 i2c_set_clientdata(client, data);
1250 data->type = id->driver_data;
1251 mutex_init(&data->update_lock);
1252
1253 /* Fill in the chip specific driver values */
1254 switch (data->type) {
1255 case adm1027:
1256 case adt7463:
1257 case emc6d100:
1258 case emc6d102:
1259 data->freq_map = adm1027_freq_map;
1260 break;
1261 default:
1262 data->freq_map = lm85_freq_map;
1263 }
1264
1265 /* Set the VRM version */
1266 data->vrm = vid_which_vrm();
1267
1268 /* Initialize the LM85 chip */
1269 lm85_init_client(client);
1270
1271 /* Register sysfs hooks */
1272 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1273 if (err)
1274 goto err_kfree;
1275
1276 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1277 as a sixth digital VID input rather than an analog input. */
1278 data->vid = lm85_read_value(client, LM85_REG_VID);
1279 if (!((data->type == adt7463 || data->type == adt7468) &&
1280 (data->vid & 0x80)))
1281 if ((err = sysfs_create_group(&client->dev.kobj,
1282 &lm85_group_in4)))
1283 goto err_remove_files;
1284
1285 /* The EMC6D100 has 3 additional voltage inputs */
1286 if (data->type == emc6d100)
1287 if ((err = sysfs_create_group(&client->dev.kobj,
1288 &lm85_group_in567)))
1289 goto err_remove_files;
1290
1291 data->hwmon_dev = hwmon_device_register(&client->dev);
1292 if (IS_ERR(data->hwmon_dev)) {
1293 err = PTR_ERR(data->hwmon_dev);
1294 goto err_remove_files;
1295 }
1296
1297 return 0;
1298
1299 /* Error out and cleanup code */
1300 err_remove_files:
1301 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1302 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1303 if (data->type == emc6d100)
1304 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1305 err_kfree:
1306 kfree(data);
1307 return err;
1308 }
1309
1310 static int lm85_remove(struct i2c_client *client)
1311 {
1312 struct lm85_data *data = i2c_get_clientdata(client);
1313 hwmon_device_unregister(data->hwmon_dev);
1314 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1315 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1316 if (data->type == emc6d100)
1317 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1318 kfree(data);
1319 return 0;
1320 }
1321
1322
1323 static int lm85_read_value(struct i2c_client *client, u8 reg)
1324 {
1325 int res;
1326
1327 /* What size location is it? */
1328 switch (reg) {
1329 case LM85_REG_FAN(0): /* Read WORD data */
1330 case LM85_REG_FAN(1):
1331 case LM85_REG_FAN(2):
1332 case LM85_REG_FAN(3):
1333 case LM85_REG_FAN_MIN(0):
1334 case LM85_REG_FAN_MIN(1):
1335 case LM85_REG_FAN_MIN(2):
1336 case LM85_REG_FAN_MIN(3):
1337 case LM85_REG_ALARM1: /* Read both bytes at once */
1338 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1339 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1340 break;
1341 default: /* Read BYTE data */
1342 res = i2c_smbus_read_byte_data(client, reg);
1343 break;
1344 }
1345
1346 return res;
1347 }
1348
1349 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1350 {
1351 switch (reg) {
1352 case LM85_REG_FAN(0): /* Write WORD data */
1353 case LM85_REG_FAN(1):
1354 case LM85_REG_FAN(2):
1355 case LM85_REG_FAN(3):
1356 case LM85_REG_FAN_MIN(0):
1357 case LM85_REG_FAN_MIN(1):
1358 case LM85_REG_FAN_MIN(2):
1359 case LM85_REG_FAN_MIN(3):
1360 /* NOTE: ALARM is read only, so not included here */
1361 i2c_smbus_write_byte_data(client, reg, value & 0xff);
1362 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1363 break;
1364 default: /* Write BYTE data */
1365 i2c_smbus_write_byte_data(client, reg, value);
1366 break;
1367 }
1368 }
1369
1370 static struct lm85_data *lm85_update_device(struct device *dev)
1371 {
1372 struct i2c_client *client = to_i2c_client(dev);
1373 struct lm85_data *data = i2c_get_clientdata(client);
1374 int i;
1375
1376 mutex_lock(&data->update_lock);
1377
1378 if (!data->valid ||
1379 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1380 /* Things that change quickly */
1381 dev_dbg(&client->dev, "Reading sensor values\n");
1382
1383 /* Have to read extended bits first to "freeze" the
1384 * more significant bits that are read later.
1385 * There are 2 additional resolution bits per channel and we
1386 * have room for 4, so we shift them to the left.
1387 */
1388 if (data->type == adm1027 || data->type == adt7463 ||
1389 data->type == adt7468) {
1390 int ext1 = lm85_read_value(client,
1391 ADM1027_REG_EXTEND_ADC1);
1392 int ext2 = lm85_read_value(client,
1393 ADM1027_REG_EXTEND_ADC2);
1394 int val = (ext1 << 8) + ext2;
1395
1396 for (i = 0; i <= 4; i++)
1397 data->in_ext[i] =
1398 ((val >> (i * 2)) & 0x03) << 2;
1399
1400 for (i = 0; i <= 2; i++)
1401 data->temp_ext[i] =
1402 (val >> ((i + 4) * 2)) & 0x0c;
1403 }
1404
1405 data->vid = lm85_read_value(client, LM85_REG_VID);
1406
1407 for (i = 0; i <= 3; ++i) {
1408 data->in[i] =
1409 lm85_read_value(client, LM85_REG_IN(i));
1410 data->fan[i] =
1411 lm85_read_value(client, LM85_REG_FAN(i));
1412 }
1413
1414 if (!((data->type == adt7463 || data->type == adt7468) &&
1415 (data->vid & 0x80))) {
1416 data->in[4] = lm85_read_value(client,
1417 LM85_REG_IN(4));
1418 }
1419
1420 if (data->type == adt7468)
1421 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
1422
1423 for (i = 0; i <= 2; ++i) {
1424 data->temp[i] =
1425 lm85_read_value(client, LM85_REG_TEMP(i));
1426 data->pwm[i] =
1427 lm85_read_value(client, LM85_REG_PWM(i));
1428
1429 if (IS_ADT7468_OFF64(data))
1430 data->temp[i] -= 64;
1431 }
1432
1433 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1434
1435 if (data->type == emc6d100) {
1436 /* Three more voltage sensors */
1437 for (i = 5; i <= 7; ++i) {
1438 data->in[i] = lm85_read_value(client,
1439 EMC6D100_REG_IN(i));
1440 }
1441 /* More alarm bits */
1442 data->alarms |= lm85_read_value(client,
1443 EMC6D100_REG_ALARM3) << 16;
1444 } else if (data->type == emc6d102) {
1445 /* Have to read LSB bits after the MSB ones because
1446 the reading of the MSB bits has frozen the
1447 LSBs (backward from the ADM1027).
1448 */
1449 int ext1 = lm85_read_value(client,
1450 EMC6D102_REG_EXTEND_ADC1);
1451 int ext2 = lm85_read_value(client,
1452 EMC6D102_REG_EXTEND_ADC2);
1453 int ext3 = lm85_read_value(client,
1454 EMC6D102_REG_EXTEND_ADC3);
1455 int ext4 = lm85_read_value(client,
1456 EMC6D102_REG_EXTEND_ADC4);
1457 data->in_ext[0] = ext3 & 0x0f;
1458 data->in_ext[1] = ext4 & 0x0f;
1459 data->in_ext[2] = ext4 >> 4;
1460 data->in_ext[3] = ext3 >> 4;
1461 data->in_ext[4] = ext2 >> 4;
1462
1463 data->temp_ext[0] = ext1 & 0x0f;
1464 data->temp_ext[1] = ext2 & 0x0f;
1465 data->temp_ext[2] = ext1 >> 4;
1466 }
1467
1468 data->last_reading = jiffies;
1469 } /* last_reading */
1470
1471 if (!data->valid ||
1472 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1473 /* Things that don't change often */
1474 dev_dbg(&client->dev, "Reading config values\n");
1475
1476 for (i = 0; i <= 3; ++i) {
1477 data->in_min[i] =
1478 lm85_read_value(client, LM85_REG_IN_MIN(i));
1479 data->in_max[i] =
1480 lm85_read_value(client, LM85_REG_IN_MAX(i));
1481 data->fan_min[i] =
1482 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1483 }
1484
1485 if (!((data->type == adt7463 || data->type == adt7468) &&
1486 (data->vid & 0x80))) {
1487 data->in_min[4] = lm85_read_value(client,
1488 LM85_REG_IN_MIN(4));
1489 data->in_max[4] = lm85_read_value(client,
1490 LM85_REG_IN_MAX(4));
1491 }
1492
1493 if (data->type == emc6d100) {
1494 for (i = 5; i <= 7; ++i) {
1495 data->in_min[i] = lm85_read_value(client,
1496 EMC6D100_REG_IN_MIN(i));
1497 data->in_max[i] = lm85_read_value(client,
1498 EMC6D100_REG_IN_MAX(i));
1499 }
1500 }
1501
1502 for (i = 0; i <= 2; ++i) {
1503 int val;
1504
1505 data->temp_min[i] =
1506 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1507 data->temp_max[i] =
1508 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1509
1510 data->autofan[i].config =
1511 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1512 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1513 data->pwm_freq[i] = val & 0x07;
1514 data->zone[i].range = val >> 4;
1515 data->autofan[i].min_pwm =
1516 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1517 data->zone[i].limit =
1518 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1519 data->zone[i].critical =
1520 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1521
1522 if (IS_ADT7468_OFF64(data)) {
1523 data->temp_min[i] -= 64;
1524 data->temp_max[i] -= 64;
1525 data->zone[i].limit -= 64;
1526 data->zone[i].critical -= 64;
1527 }
1528 }
1529
1530 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1531 data->autofan[0].min_off = (i & 0x20) != 0;
1532 data->autofan[1].min_off = (i & 0x40) != 0;
1533 data->autofan[2].min_off = (i & 0x80) != 0;
1534
1535 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1536 data->zone[0].hyst = i >> 4;
1537 data->zone[1].hyst = i & 0x0f;
1538
1539 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1540 data->zone[2].hyst = i >> 4;
1541
1542 data->last_config = jiffies;
1543 } /* last_config */
1544
1545 data->valid = 1;
1546
1547 mutex_unlock(&data->update_lock);
1548
1549 return data;
1550 }
1551
1552
1553 static int __init sm_lm85_init(void)
1554 {
1555 return i2c_add_driver(&lm85_driver);
1556 }
1557
1558 static void __exit sm_lm85_exit(void)
1559 {
1560 i2c_del_driver(&lm85_driver);
1561 }
1562
1563 MODULE_LICENSE("GPL");
1564 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1565 "Margit Schubert-While <margitsw@t-online.de>, "
1566 "Justin Thiessen <jthiessen@penguincomputing.com>");
1567 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1568
1569 module_init(sm_lm85_init);
1570 module_exit(sm_lm85_exit);
Support for the Chinese Samsung S3C2440 based development boards