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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / hwmon / lm85.c
blob6c53d987de1088dc5f4a199b6a0c44236b220ac4
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_LM96000_1 0x68
79 #define LM85_VERSTEP_LM96000_2 0x69
80 #define LM85_VERSTEP_ADM1027 0x60
81 #define LM85_VERSTEP_ADT7463 0x62
82 #define LM85_VERSTEP_ADT7463C 0x6A
83 #define LM85_VERSTEP_ADT7468_1 0x71
84 #define LM85_VERSTEP_ADT7468_2 0x72
85 #define LM85_VERSTEP_EMC6D100_A0 0x60
86 #define LM85_VERSTEP_EMC6D100_A1 0x61
87 #define LM85_VERSTEP_EMC6D102 0x65
88
89 #define LM85_REG_CONFIG 0x40
90
91 #define LM85_REG_ALARM1 0x41
92 #define LM85_REG_ALARM2 0x42
93
94 #define LM85_REG_VID 0x43
95
96 /* Automated FAN control */
97 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
98 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
99 #define LM85_REG_AFAN_SPIKE1 0x62
100 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
101 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
102 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
103 #define LM85_REG_AFAN_HYST1 0x6d
104 #define LM85_REG_AFAN_HYST2 0x6e
105
106 #define ADM1027_REG_EXTEND_ADC1 0x76
107 #define ADM1027_REG_EXTEND_ADC2 0x77
108
109 #define EMC6D100_REG_ALARM3 0x7d
110 /* IN5, IN6 and IN7 */
111 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
112 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
113 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
114 #define EMC6D102_REG_EXTEND_ADC1 0x85
115 #define EMC6D102_REG_EXTEND_ADC2 0x86
116 #define EMC6D102_REG_EXTEND_ADC3 0x87
117 #define EMC6D102_REG_EXTEND_ADC4 0x88
118
119
120 /* Conversions. Rounding and limit checking is only done on the TO_REG
121 variants. Note that you should be a bit careful with which arguments
122 these macros are called: arguments may be evaluated more than once.
123 */
124
125 /* IN are scaled acording to built-in resistors */
126 static const int lm85_scaling[] = { /* .001 Volts */
127 2500, 2250, 3300, 5000, 12000,
128 3300, 1500, 1800 /*EMC6D100*/
129 };
130 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
131
132 #define INS_TO_REG(n, val) \
133 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
134
135 #define INSEXT_FROM_REG(n, val, ext) \
136 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
137
138 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
139
140 /* FAN speed is measured using 90kHz clock */
141 static inline u16 FAN_TO_REG(unsigned long val)
142 {
143 if (!val)
144 return 0xffff;
145 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
146 }
147 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
148 5400000 / (val))
149
150 /* Temperature is reported in .001 degC increments */
151 #define TEMP_TO_REG(val) \
152 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
153 #define TEMPEXT_FROM_REG(val, ext) \
154 SCALE(((val) << 4) + (ext), 16, 1000)
155 #define TEMP_FROM_REG(val) ((val) * 1000)
156
157 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
158 #define PWM_FROM_REG(val) (val)
159
160
161 /* ZONEs have the following parameters:
162 * Limit (low) temp, 1. degC
163 * Hysteresis (below limit), 1. degC (0-15)
164 * Range of speed control, .1 degC (2-80)
165 * Critical (high) temp, 1. degC
166 *
167 * FAN PWMs have the following parameters:
168 * Reference Zone, 1, 2, 3, etc.
169 * Spinup time, .05 sec
170 * PWM value at limit/low temp, 1 count
171 * PWM Frequency, 1. Hz
172 * PWM is Min or OFF below limit, flag
173 * Invert PWM output, flag
174 *
175 * Some chips filter the temp, others the fan.
176 * Filter constant (or disabled) .1 seconds
177 */
178
179 /* These are the zone temperature range encodings in .001 degree C */
180 static const int lm85_range_map[] = {
181 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
182 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
183 };
184
185 static int RANGE_TO_REG(int range)
186 {
187 int i;
188
189 /* Find the closest match */
190 for (i = 0; i < 15; ++i) {
191 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
192 break;
193 }
194
195 return i;
196 }
197 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
198
199 /* These are the PWM frequency encodings */
200 static const int lm85_freq_map[8] = { /* 1 Hz */
201 10, 15, 23, 30, 38, 47, 61, 94
202 };
203 static const int adm1027_freq_map[8] = { /* 1 Hz */
204 11, 15, 22, 29, 35, 44, 59, 88
205 };
206
207 static int FREQ_TO_REG(const int *map, int freq)
208 {
209 int i;
210
211 /* Find the closest match */
212 for (i = 0; i < 7; ++i)
213 if (freq <= (map[i] + map[i + 1]) / 2)
214 break;
215 return i;
216 }
217
218 static int FREQ_FROM_REG(const int *map, u8 reg)
219 {
220 return map[reg & 0x07];
221 }
222
223 /* Since we can't use strings, I'm abusing these numbers
224 * to stand in for the following meanings:
225 * 1 -- PWM responds to Zone 1
226 * 2 -- PWM responds to Zone 2
227 * 3 -- PWM responds to Zone 3
228 * 23 -- PWM responds to the higher temp of Zone 2 or 3
229 * 123 -- PWM responds to highest of Zone 1, 2, or 3
230 * 0 -- PWM is always at 0% (ie, off)
231 * -1 -- PWM is always at 100%
232 * -2 -- PWM responds to manual control
233 */
234
235 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
236 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
237
238 static int ZONE_TO_REG(int zone)
239 {
240 int i;
241
242 for (i = 0; i <= 7; ++i)
243 if (zone == lm85_zone_map[i])
244 break;
245 if (i > 7) /* Not found. */
246 i = 3; /* Always 100% */
247 return i << 5;
248 }
249
250 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
251 #define HYST_FROM_REG(val) ((val) * 1000)
252
253 /* Chip sampling rates
254 *
255 * Some sensors are not updated more frequently than once per second
256 * so it doesn't make sense to read them more often than that.
257 * We cache the results and return the saved data if the driver
258 * is called again before a second has elapsed.
259 *
260 * Also, there is significant configuration data for this chip
261 * given the automatic PWM fan control that is possible. There
262 * are about 47 bytes of config data to only 22 bytes of actual
263 * readings. So, we keep the config data up to date in the cache
264 * when it is written and only sample it once every 1 *minute*
265 */
266 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
267 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
268
269 /* LM85 can automatically adjust fan speeds based on temperature
270 * This structure encapsulates an entire Zone config. There are
271 * three zones (one for each temperature input) on the lm85
272 */
273 struct lm85_zone {
274 s8 limit; /* Low temp limit */
275 u8 hyst; /* Low limit hysteresis. (0-15) */
276 u8 range; /* Temp range, encoded */
277 s8 critical; /* "All fans ON" temp limit */
278 u8 off_desired; /* Actual "off" temperature specified. Preserved
279 * to prevent "drift" as other autofan control
280 * values change.
281 */
282 u8 max_desired; /* Actual "max" temperature specified. Preserved
283 * to prevent "drift" as other autofan control
284 * values change.
285 */
286 };
287
288 struct lm85_autofan {
289 u8 config; /* Register value */
290 u8 min_pwm; /* Minimum PWM value, encoded */
291 u8 min_off; /* Min PWM or OFF below "limit", flag */
292 };
293
294 /* For each registered chip, we need to keep some data in memory.
295 The structure is dynamically allocated. */
296 struct lm85_data {
297 struct device *hwmon_dev;
298 const int *freq_map;
299 enum chips type;
300
301 struct mutex update_lock;
302 int valid; /* !=0 if following fields are valid */
303 unsigned long last_reading; /* In jiffies */
304 unsigned long last_config; /* In jiffies */
305
306 u8 in[8]; /* Register value */
307 u8 in_max[8]; /* Register value */
308 u8 in_min[8]; /* Register value */
309 s8 temp[3]; /* Register value */
310 s8 temp_min[3]; /* Register value */
311 s8 temp_max[3]; /* Register value */
312 u16 fan[4]; /* Register value */
313 u16 fan_min[4]; /* Register value */
314 u8 pwm[3]; /* Register value */
315 u8 pwm_freq[3]; /* Register encoding */
316 u8 temp_ext[3]; /* Decoded values */
317 u8 in_ext[8]; /* Decoded values */
318 u8 vid; /* Register value */
319 u8 vrm; /* VRM version */
320 u32 alarms; /* Register encoding, combined */
321 u8 cfg5; /* Config Register 5 on ADT7468 */
322 struct lm85_autofan autofan[3];
323 struct lm85_zone zone[3];
324 };
325
326 static int lm85_detect(struct i2c_client *client, int kind,
327 struct i2c_board_info *info);
328 static int lm85_probe(struct i2c_client *client,
329 const struct i2c_device_id *id);
330 static int lm85_remove(struct i2c_client *client);
331
332 static int lm85_read_value(struct i2c_client *client, u8 reg);
333 static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
334 static struct lm85_data *lm85_update_device(struct device *dev);
335
336
337 static const struct i2c_device_id lm85_id[] = {
338 { "adm1027", adm1027 },
339 { "adt7463", adt7463 },
340 { "adt7468", adt7468 },
341 { "lm85", any_chip },
342 { "lm85b", lm85b },
343 { "lm85c", lm85c },
344 { "emc6d100", emc6d100 },
345 { "emc6d101", emc6d100 },
346 { "emc6d102", emc6d102 },
347 { }
348 };
349 MODULE_DEVICE_TABLE(i2c, lm85_id);
350
351 static struct i2c_driver lm85_driver = {
352 .class = I2C_CLASS_HWMON,
353 .driver = {
354 .name = "lm85",
355 },
356 .probe = lm85_probe,
357 .remove = lm85_remove,
358 .id_table = lm85_id,
359 .detect = lm85_detect,
360 .address_data = &addr_data,
361 };
362
363
364 /* 4 Fans */
365 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
366 char *buf)
367 {
368 int nr = to_sensor_dev_attr(attr)->index;
369 struct lm85_data *data = lm85_update_device(dev);
370 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
371 }
372
373 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
374 char *buf)
375 {
376 int nr = to_sensor_dev_attr(attr)->index;
377 struct lm85_data *data = lm85_update_device(dev);
378 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
379 }
380
381 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
382 const char *buf, size_t count)
383 {
384 int nr = to_sensor_dev_attr(attr)->index;
385 struct i2c_client *client = to_i2c_client(dev);
386 struct lm85_data *data = i2c_get_clientdata(client);
387 unsigned long val = simple_strtoul(buf, NULL, 10);
388
389 mutex_lock(&data->update_lock);
390 data->fan_min[nr] = FAN_TO_REG(val);
391 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
392 mutex_unlock(&data->update_lock);
393 return count;
394 }
395
396 #define show_fan_offset(offset) \
397 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
398 show_fan, NULL, offset - 1); \
399 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
400 show_fan_min, set_fan_min, offset - 1)
401
402 show_fan_offset(1);
403 show_fan_offset(2);
404 show_fan_offset(3);
405 show_fan_offset(4);
406
407 /* vid, vrm, alarms */
408
409 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
410 char *buf)
411 {
412 struct lm85_data *data = lm85_update_device(dev);
413 int vid;
414
415 if ((data->type == adt7463 || data->type == adt7468) &&
416 (data->vid & 0x80)) {
417 /* 6-pin VID (VRM 10) */
418 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
419 } else {
420 /* 5-pin VID (VRM 9) */
421 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
422 }
423
424 return sprintf(buf, "%d\n", vid);
425 }
426
427 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
428
429 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
430 char *buf)
431 {
432 struct lm85_data *data = dev_get_drvdata(dev);
433 return sprintf(buf, "%ld\n", (long) data->vrm);
434 }
435
436 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
437 const char *buf, size_t count)
438 {
439 struct lm85_data *data = dev_get_drvdata(dev);
440 data->vrm = simple_strtoul(buf, NULL, 10);
441 return count;
442 }
443
444 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
445
446 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
447 *attr, char *buf)
448 {
449 struct lm85_data *data = lm85_update_device(dev);
450 return sprintf(buf, "%u\n", data->alarms);
451 }
452
453 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
454
455 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
456 char *buf)
457 {
458 int nr = to_sensor_dev_attr(attr)->index;
459 struct lm85_data *data = lm85_update_device(dev);
460 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
461 }
462
463 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
464 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
465 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
466 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
467 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
468 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
469 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
470 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
471 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
472 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
473 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
474 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
475 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
476 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
477 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
478 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
479 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
480
481 /* pwm */
482
483 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
484 char *buf)
485 {
486 int nr = to_sensor_dev_attr(attr)->index;
487 struct lm85_data *data = lm85_update_device(dev);
488 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
489 }
490
491 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
492 const char *buf, size_t count)
493 {
494 int nr = to_sensor_dev_attr(attr)->index;
495 struct i2c_client *client = to_i2c_client(dev);
496 struct lm85_data *data = i2c_get_clientdata(client);
497 long val = simple_strtol(buf, NULL, 10);
498
499 mutex_lock(&data->update_lock);
500 data->pwm[nr] = PWM_TO_REG(val);
501 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
502 mutex_unlock(&data->update_lock);
503 return count;
504 }
505
506 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
507 *attr, char *buf)
508 {
509 int nr = to_sensor_dev_attr(attr)->index;
510 struct lm85_data *data = lm85_update_device(dev);
511 int pwm_zone, enable;
512
513 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
514 switch (pwm_zone) {
515 case -1: /* PWM is always at 100% */
516 enable = 0;
517 break;
518 case 0: /* PWM is always at 0% */
519 case -2: /* PWM responds to manual control */
520 enable = 1;
521 break;
522 default: /* PWM in automatic mode */
523 enable = 2;
524 }
525 return sprintf(buf, "%d\n", enable);
526 }
527
528 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
529 *attr, const char *buf, size_t count)
530 {
531 int nr = to_sensor_dev_attr(attr)->index;
532 struct i2c_client *client = to_i2c_client(dev);
533 struct lm85_data *data = i2c_get_clientdata(client);
534 long val = simple_strtol(buf, NULL, 10);
535 u8 config;
536
537 switch (val) {
538 case 0:
539 config = 3;
540 break;
541 case 1:
542 config = 7;
543 break;
544 case 2:
545 /* Here we have to choose arbitrarily one of the 5 possible
546 configurations; I go for the safest */
547 config = 6;
548 break;
549 default:
550 return -EINVAL;
551 }
552
553 mutex_lock(&data->update_lock);
554 data->autofan[nr].config = lm85_read_value(client,
555 LM85_REG_AFAN_CONFIG(nr));
556 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
557 | (config << 5);
558 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
559 data->autofan[nr].config);
560 mutex_unlock(&data->update_lock);
561 return count;
562 }
563
564 static ssize_t show_pwm_freq(struct device *dev,
565 struct device_attribute *attr, char *buf)
566 {
567 int nr = to_sensor_dev_attr(attr)->index;
568 struct lm85_data *data = lm85_update_device(dev);
569 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->freq_map,
570 data->pwm_freq[nr]));
571 }
572
573 static ssize_t set_pwm_freq(struct device *dev,
574 struct device_attribute *attr, const char *buf, size_t count)
575 {
576 int nr = to_sensor_dev_attr(attr)->index;
577 struct i2c_client *client = to_i2c_client(dev);
578 struct lm85_data *data = i2c_get_clientdata(client);
579 long val = simple_strtol(buf, NULL, 10);
580
581 mutex_lock(&data->update_lock);
582 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
583 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
584 (data->zone[nr].range << 4)
585 | data->pwm_freq[nr]);
586 mutex_unlock(&data->update_lock);
587 return count;
588 }
589
590 #define show_pwm_reg(offset) \
591 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
592 show_pwm, set_pwm, offset - 1); \
593 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
594 show_pwm_enable, set_pwm_enable, offset - 1); \
595 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
596 show_pwm_freq, set_pwm_freq, offset - 1)
597
598 show_pwm_reg(1);
599 show_pwm_reg(2);
600 show_pwm_reg(3);
601
602 /* Voltages */
603
604 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
605 char *buf)
606 {
607 int nr = to_sensor_dev_attr(attr)->index;
608 struct lm85_data *data = lm85_update_device(dev);
609 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
610 data->in_ext[nr]));
611 }
612
613 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
614 char *buf)
615 {
616 int nr = to_sensor_dev_attr(attr)->index;
617 struct lm85_data *data = lm85_update_device(dev);
618 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
619 }
620
621 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
622 const char *buf, size_t count)
623 {
624 int nr = to_sensor_dev_attr(attr)->index;
625 struct i2c_client *client = to_i2c_client(dev);
626 struct lm85_data *data = i2c_get_clientdata(client);
627 long val = simple_strtol(buf, NULL, 10);
628
629 mutex_lock(&data->update_lock);
630 data->in_min[nr] = INS_TO_REG(nr, val);
631 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
632 mutex_unlock(&data->update_lock);
633 return count;
634 }
635
636 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
637 char *buf)
638 {
639 int nr = to_sensor_dev_attr(attr)->index;
640 struct lm85_data *data = lm85_update_device(dev);
641 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
642 }
643
644 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
645 const char *buf, size_t count)
646 {
647 int nr = to_sensor_dev_attr(attr)->index;
648 struct i2c_client *client = to_i2c_client(dev);
649 struct lm85_data *data = i2c_get_clientdata(client);
650 long val = simple_strtol(buf, NULL, 10);
651
652 mutex_lock(&data->update_lock);
653 data->in_max[nr] = INS_TO_REG(nr, val);
654 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
655 mutex_unlock(&data->update_lock);
656 return count;
657 }
658
659 #define show_in_reg(offset) \
660 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
661 show_in, NULL, offset); \
662 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
663 show_in_min, set_in_min, offset); \
664 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
665 show_in_max, set_in_max, offset)
666
667 show_in_reg(0);
668 show_in_reg(1);
669 show_in_reg(2);
670 show_in_reg(3);
671 show_in_reg(4);
672 show_in_reg(5);
673 show_in_reg(6);
674 show_in_reg(7);
675
676 /* Temps */
677
678 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
679 char *buf)
680 {
681 int nr = to_sensor_dev_attr(attr)->index;
682 struct lm85_data *data = lm85_update_device(dev);
683 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
684 data->temp_ext[nr]));
685 }
686
687 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
688 char *buf)
689 {
690 int nr = to_sensor_dev_attr(attr)->index;
691 struct lm85_data *data = lm85_update_device(dev);
692 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
693 }
694
695 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
696 const char *buf, size_t count)
697 {
698 int nr = to_sensor_dev_attr(attr)->index;
699 struct i2c_client *client = to_i2c_client(dev);
700 struct lm85_data *data = i2c_get_clientdata(client);
701 long val = simple_strtol(buf, NULL, 10);
702
703 if (IS_ADT7468_OFF64(data))
704 val += 64;
705
706 mutex_lock(&data->update_lock);
707 data->temp_min[nr] = TEMP_TO_REG(val);
708 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
709 mutex_unlock(&data->update_lock);
710 return count;
711 }
712
713 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
714 char *buf)
715 {
716 int nr = to_sensor_dev_attr(attr)->index;
717 struct lm85_data *data = lm85_update_device(dev);
718 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
719 }
720
721 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
722 const char *buf, size_t count)
723 {
724 int nr = to_sensor_dev_attr(attr)->index;
725 struct i2c_client *client = to_i2c_client(dev);
726 struct lm85_data *data = i2c_get_clientdata(client);
727 long val = simple_strtol(buf, NULL, 10);
728
729 if (IS_ADT7468_OFF64(data))
730 val += 64;
731
732 mutex_lock(&data->update_lock);
733 data->temp_max[nr] = TEMP_TO_REG(val);
734 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
735 mutex_unlock(&data->update_lock);
736 return count;
737 }
738
739 #define show_temp_reg(offset) \
740 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
741 show_temp, NULL, offset - 1); \
742 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
743 show_temp_min, set_temp_min, offset - 1); \
744 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
745 show_temp_max, set_temp_max, offset - 1);
746
747 show_temp_reg(1);
748 show_temp_reg(2);
749 show_temp_reg(3);
750
751
752 /* Automatic PWM control */
753
754 static ssize_t show_pwm_auto_channels(struct device *dev,
755 struct device_attribute *attr, char *buf)
756 {
757 int nr = to_sensor_dev_attr(attr)->index;
758 struct lm85_data *data = lm85_update_device(dev);
759 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
760 }
761
762 static ssize_t set_pwm_auto_channels(struct device *dev,
763 struct device_attribute *attr, const char *buf, size_t count)
764 {
765 int nr = to_sensor_dev_attr(attr)->index;
766 struct i2c_client *client = to_i2c_client(dev);
767 struct lm85_data *data = i2c_get_clientdata(client);
768 long val = simple_strtol(buf, NULL, 10);
769
770 mutex_lock(&data->update_lock);
771 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
772 | ZONE_TO_REG(val);
773 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
774 data->autofan[nr].config);
775 mutex_unlock(&data->update_lock);
776 return count;
777 }
778
779 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
780 struct device_attribute *attr, char *buf)
781 {
782 int nr = to_sensor_dev_attr(attr)->index;
783 struct lm85_data *data = lm85_update_device(dev);
784 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
785 }
786
787 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
788 struct device_attribute *attr, const char *buf, size_t count)
789 {
790 int nr = to_sensor_dev_attr(attr)->index;
791 struct i2c_client *client = to_i2c_client(dev);
792 struct lm85_data *data = i2c_get_clientdata(client);
793 long val = simple_strtol(buf, NULL, 10);
794
795 mutex_lock(&data->update_lock);
796 data->autofan[nr].min_pwm = PWM_TO_REG(val);
797 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
798 data->autofan[nr].min_pwm);
799 mutex_unlock(&data->update_lock);
800 return count;
801 }
802
803 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
804 struct device_attribute *attr, char *buf)
805 {
806 int nr = to_sensor_dev_attr(attr)->index;
807 struct lm85_data *data = lm85_update_device(dev);
808 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
809 }
810
811 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
812 struct device_attribute *attr, const char *buf, size_t count)
813 {
814 int nr = to_sensor_dev_attr(attr)->index;
815 struct i2c_client *client = to_i2c_client(dev);
816 struct lm85_data *data = i2c_get_clientdata(client);
817 long val = simple_strtol(buf, NULL, 10);
818 u8 tmp;
819
820 mutex_lock(&data->update_lock);
821 data->autofan[nr].min_off = val;
822 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
823 tmp &= ~(0x20 << nr);
824 if (data->autofan[nr].min_off)
825 tmp |= 0x20 << nr;
826 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
827 mutex_unlock(&data->update_lock);
828 return count;
829 }
830
831 #define pwm_auto(offset) \
832 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
833 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
834 set_pwm_auto_channels, offset - 1); \
835 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
836 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
837 set_pwm_auto_pwm_min, offset - 1); \
838 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
839 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
840 set_pwm_auto_pwm_minctl, offset - 1)
841
842 pwm_auto(1);
843 pwm_auto(2);
844 pwm_auto(3);
845
846 /* Temperature settings for automatic PWM control */
847
848 static ssize_t show_temp_auto_temp_off(struct device *dev,
849 struct device_attribute *attr, char *buf)
850 {
851 int nr = to_sensor_dev_attr(attr)->index;
852 struct lm85_data *data = lm85_update_device(dev);
853 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
854 HYST_FROM_REG(data->zone[nr].hyst));
855 }
856
857 static ssize_t set_temp_auto_temp_off(struct device *dev,
858 struct device_attribute *attr, const char *buf, size_t count)
859 {
860 int nr = to_sensor_dev_attr(attr)->index;
861 struct i2c_client *client = to_i2c_client(dev);
862 struct lm85_data *data = i2c_get_clientdata(client);
863 int min;
864 long val = simple_strtol(buf, NULL, 10);
865
866 mutex_lock(&data->update_lock);
867 min = TEMP_FROM_REG(data->zone[nr].limit);
868 data->zone[nr].off_desired = TEMP_TO_REG(val);
869 data->zone[nr].hyst = HYST_TO_REG(min - val);
870 if (nr == 0 || nr == 1) {
871 lm85_write_value(client, LM85_REG_AFAN_HYST1,
872 (data->zone[0].hyst << 4)
873 | data->zone[1].hyst);
874 } else {
875 lm85_write_value(client, LM85_REG_AFAN_HYST2,
876 (data->zone[2].hyst << 4));
877 }
878 mutex_unlock(&data->update_lock);
879 return count;
880 }
881
882 static ssize_t show_temp_auto_temp_min(struct device *dev,
883 struct device_attribute *attr, char *buf)
884 {
885 int nr = to_sensor_dev_attr(attr)->index;
886 struct lm85_data *data = lm85_update_device(dev);
887 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
888 }
889
890 static ssize_t set_temp_auto_temp_min(struct device *dev,
891 struct device_attribute *attr, const char *buf, size_t count)
892 {
893 int nr = to_sensor_dev_attr(attr)->index;
894 struct i2c_client *client = to_i2c_client(dev);
895 struct lm85_data *data = i2c_get_clientdata(client);
896 long val = simple_strtol(buf, NULL, 10);
897
898 mutex_lock(&data->update_lock);
899 data->zone[nr].limit = TEMP_TO_REG(val);
900 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
901 data->zone[nr].limit);
902
903 /* Update temp_auto_max and temp_auto_range */
904 data->zone[nr].range = RANGE_TO_REG(
905 TEMP_FROM_REG(data->zone[nr].max_desired) -
906 TEMP_FROM_REG(data->zone[nr].limit));
907 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
908 ((data->zone[nr].range & 0x0f) << 4)
909 | (data->pwm_freq[nr] & 0x07));
910
911 /* Update temp_auto_hyst and temp_auto_off */
912 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
913 data->zone[nr].limit) - TEMP_FROM_REG(
914 data->zone[nr].off_desired));
915 if (nr == 0 || nr == 1) {
916 lm85_write_value(client, LM85_REG_AFAN_HYST1,
917 (data->zone[0].hyst << 4)
918 | data->zone[1].hyst);
919 } else {
920 lm85_write_value(client, LM85_REG_AFAN_HYST2,
921 (data->zone[2].hyst << 4));
922 }
923 mutex_unlock(&data->update_lock);
924 return count;
925 }
926
927 static ssize_t show_temp_auto_temp_max(struct device *dev,
928 struct device_attribute *attr, char *buf)
929 {
930 int nr = to_sensor_dev_attr(attr)->index;
931 struct lm85_data *data = lm85_update_device(dev);
932 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
933 RANGE_FROM_REG(data->zone[nr].range));
934 }
935
936 static ssize_t set_temp_auto_temp_max(struct device *dev,
937 struct device_attribute *attr, const char *buf, size_t count)
938 {
939 int nr = to_sensor_dev_attr(attr)->index;
940 struct i2c_client *client = to_i2c_client(dev);
941 struct lm85_data *data = i2c_get_clientdata(client);
942 int min;
943 long val = simple_strtol(buf, NULL, 10);
944
945 mutex_lock(&data->update_lock);
946 min = TEMP_FROM_REG(data->zone[nr].limit);
947 data->zone[nr].max_desired = TEMP_TO_REG(val);
948 data->zone[nr].range = RANGE_TO_REG(
949 val - min);
950 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
951 ((data->zone[nr].range & 0x0f) << 4)
952 | (data->pwm_freq[nr] & 0x07));
953 mutex_unlock(&data->update_lock);
954 return count;
955 }
956
957 static ssize_t show_temp_auto_temp_crit(struct device *dev,
958 struct device_attribute *attr, char *buf)
959 {
960 int nr = to_sensor_dev_attr(attr)->index;
961 struct lm85_data *data = lm85_update_device(dev);
962 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
963 }
964
965 static ssize_t set_temp_auto_temp_crit(struct device *dev,
966 struct device_attribute *attr, const char *buf, size_t count)
967 {
968 int nr = to_sensor_dev_attr(attr)->index;
969 struct i2c_client *client = to_i2c_client(dev);
970 struct lm85_data *data = i2c_get_clientdata(client);
971 long val = simple_strtol(buf, NULL, 10);
972
973 mutex_lock(&data->update_lock);
974 data->zone[nr].critical = TEMP_TO_REG(val);
975 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
976 data->zone[nr].critical);
977 mutex_unlock(&data->update_lock);
978 return count;
979 }
980
981 #define temp_auto(offset) \
982 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
983 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
984 set_temp_auto_temp_off, offset - 1); \
985 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
986 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
987 set_temp_auto_temp_min, offset - 1); \
988 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
989 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
990 set_temp_auto_temp_max, offset - 1); \
991 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
992 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
993 set_temp_auto_temp_crit, offset - 1);
994
995 temp_auto(1);
996 temp_auto(2);
997 temp_auto(3);
998
999 static struct attribute *lm85_attributes[] = {
1000 &sensor_dev_attr_fan1_input.dev_attr.attr,
1001 &sensor_dev_attr_fan2_input.dev_attr.attr,
1002 &sensor_dev_attr_fan3_input.dev_attr.attr,
1003 &sensor_dev_attr_fan4_input.dev_attr.attr,
1004 &sensor_dev_attr_fan1_min.dev_attr.attr,
1005 &sensor_dev_attr_fan2_min.dev_attr.attr,
1006 &sensor_dev_attr_fan3_min.dev_attr.attr,
1007 &sensor_dev_attr_fan4_min.dev_attr.attr,
1008 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1009 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1010 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1011 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1012
1013 &sensor_dev_attr_pwm1.dev_attr.attr,
1014 &sensor_dev_attr_pwm2.dev_attr.attr,
1015 &sensor_dev_attr_pwm3.dev_attr.attr,
1016 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1017 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1018 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1019 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1020 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1021 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1022
1023 &sensor_dev_attr_in0_input.dev_attr.attr,
1024 &sensor_dev_attr_in1_input.dev_attr.attr,
1025 &sensor_dev_attr_in2_input.dev_attr.attr,
1026 &sensor_dev_attr_in3_input.dev_attr.attr,
1027 &sensor_dev_attr_in0_min.dev_attr.attr,
1028 &sensor_dev_attr_in1_min.dev_attr.attr,
1029 &sensor_dev_attr_in2_min.dev_attr.attr,
1030 &sensor_dev_attr_in3_min.dev_attr.attr,
1031 &sensor_dev_attr_in0_max.dev_attr.attr,
1032 &sensor_dev_attr_in1_max.dev_attr.attr,
1033 &sensor_dev_attr_in2_max.dev_attr.attr,
1034 &sensor_dev_attr_in3_max.dev_attr.attr,
1035 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1036 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1037 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1038 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1039
1040 &sensor_dev_attr_temp1_input.dev_attr.attr,
1041 &sensor_dev_attr_temp2_input.dev_attr.attr,
1042 &sensor_dev_attr_temp3_input.dev_attr.attr,
1043 &sensor_dev_attr_temp1_min.dev_attr.attr,
1044 &sensor_dev_attr_temp2_min.dev_attr.attr,
1045 &sensor_dev_attr_temp3_min.dev_attr.attr,
1046 &sensor_dev_attr_temp1_max.dev_attr.attr,
1047 &sensor_dev_attr_temp2_max.dev_attr.attr,
1048 &sensor_dev_attr_temp3_max.dev_attr.attr,
1049 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1050 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1051 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1052 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1053 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1054
1055 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1056 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1057 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1058 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1059 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1060 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1061 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1062 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1063 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1064
1065 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1066 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1067 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1068 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1069 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1070 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1071 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1072 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1073 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1074 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1075 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1076 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1077
1078 &dev_attr_vrm.attr,
1079 &dev_attr_cpu0_vid.attr,
1080 &dev_attr_alarms.attr,
1081 NULL
1082 };
1083
1084 static const struct attribute_group lm85_group = {
1085 .attrs = lm85_attributes,
1086 };
1087
1088 static struct attribute *lm85_attributes_in4[] = {
1089 &sensor_dev_attr_in4_input.dev_attr.attr,
1090 &sensor_dev_attr_in4_min.dev_attr.attr,
1091 &sensor_dev_attr_in4_max.dev_attr.attr,
1092 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1093 NULL
1094 };
1095
1096 static const struct attribute_group lm85_group_in4 = {
1097 .attrs = lm85_attributes_in4,
1098 };
1099
1100 static struct attribute *lm85_attributes_in567[] = {
1101 &sensor_dev_attr_in5_input.dev_attr.attr,
1102 &sensor_dev_attr_in6_input.dev_attr.attr,
1103 &sensor_dev_attr_in7_input.dev_attr.attr,
1104 &sensor_dev_attr_in5_min.dev_attr.attr,
1105 &sensor_dev_attr_in6_min.dev_attr.attr,
1106 &sensor_dev_attr_in7_min.dev_attr.attr,
1107 &sensor_dev_attr_in5_max.dev_attr.attr,
1108 &sensor_dev_attr_in6_max.dev_attr.attr,
1109 &sensor_dev_attr_in7_max.dev_attr.attr,
1110 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1111 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1112 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1113 NULL
1114 };
1115
1116 static const struct attribute_group lm85_group_in567 = {
1117 .attrs = lm85_attributes_in567,
1118 };
1119
1120 static void lm85_init_client(struct i2c_client *client)
1121 {
1122 int value;
1123
1124 /* Start monitoring if needed */
1125 value = lm85_read_value(client, LM85_REG_CONFIG);
1126 if (!(value & 0x01)) {
1127 dev_info(&client->dev, "Starting monitoring\n");
1128 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1129 }
1130
1131 /* Warn about unusual configuration bits */
1132 if (value & 0x02)
1133 dev_warn(&client->dev, "Device configuration is locked\n");
1134 if (!(value & 0x04))
1135 dev_warn(&client->dev, "Device is not ready\n");
1136 }
1137
1138 static int lm85_is_fake(struct i2c_client *client)
1139 {
1140 /*
1141 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1142 * emulate the former except that it has no hardware monitoring function
1143 * so the readings are always 0.
1144 */
1145 int i;
1146 u8 in_temp, fan;
1147
1148 for (i = 0; i < 8; i++) {
1149 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1150 fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1151 if (in_temp != 0x00 || fan != 0xff)
1152 return 0;
1153 }
1154
1155 return 1;
1156 }
1157
1158 /* Return 0 if detection is successful, -ENODEV otherwise */
1159 static int lm85_detect(struct i2c_client *client, int kind,
1160 struct i2c_board_info *info)
1161 {
1162 struct i2c_adapter *adapter = client->adapter;
1163 int address = client->addr;
1164 const char *type_name;
1165
1166 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1167 /* We need to be able to do byte I/O */
1168 return -ENODEV;
1169 }
1170
1171 /* If auto-detecting, determine the chip type */
1172 if (kind < 0) {
1173 int company = lm85_read_value(client, LM85_REG_COMPANY);
1174 int verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1175
1176 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
1177 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1178 address, company, verstep);
1179
1180 /* All supported chips have the version in common */
1181 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC &&
1182 (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) {
1183 dev_dbg(&adapter->dev, "Autodetection failed: "
1184 "unsupported version\n");
1185 return -ENODEV;
1186 }
1187 kind = any_chip;
1188
1189 /* Now, refine the detection */
1190 if (company == LM85_COMPANY_NATIONAL) {
1191 switch (verstep) {
1192 case LM85_VERSTEP_LM85C:
1193 kind = lm85c;
1194 break;
1195 case LM85_VERSTEP_LM85B:
1196 kind = lm85b;
1197 break;
1198 case LM85_VERSTEP_LM96000_1:
1199 case LM85_VERSTEP_LM96000_2:
1200 /* Check for Winbond WPCD377I */
1201 if (lm85_is_fake(client)) {
1202 dev_dbg(&adapter->dev,
1203 "Found Winbond WPCD377I, "
1204 "ignoring\n");
1205 return -ENODEV;
1206 }
1207 break;
1208 }
1209 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1210 switch (verstep) {
1211 case LM85_VERSTEP_ADM1027:
1212 kind = adm1027;
1213 break;
1214 case LM85_VERSTEP_ADT7463:
1215 case LM85_VERSTEP_ADT7463C:
1216 kind = adt7463;
1217 break;
1218 case LM85_VERSTEP_ADT7468_1:
1219 case LM85_VERSTEP_ADT7468_2:
1220 kind = adt7468;
1221 break;
1222 }
1223 } else if (company == LM85_COMPANY_SMSC) {
1224 switch (verstep) {
1225 case LM85_VERSTEP_EMC6D100_A0:
1226 case LM85_VERSTEP_EMC6D100_A1:
1227 /* Note: we can't tell a '100 from a '101 */
1228 kind = emc6d100;
1229 break;
1230 case LM85_VERSTEP_EMC6D102:
1231 kind = emc6d102;
1232 break;
1233 }
1234 } else {
1235 dev_dbg(&adapter->dev, "Autodetection failed: "
1236 "unknown vendor\n");
1237 return -ENODEV;
1238 }
1239 }
1240
1241 switch (kind) {
1242 case lm85b:
1243 type_name = "lm85b";
1244 break;
1245 case lm85c:
1246 type_name = "lm85c";
1247 break;
1248 case adm1027:
1249 type_name = "adm1027";
1250 break;
1251 case adt7463:
1252 type_name = "adt7463";
1253 break;
1254 case adt7468:
1255 type_name = "adt7468";
1256 break;
1257 case emc6d100:
1258 type_name = "emc6d100";
1259 break;
1260 case emc6d102:
1261 type_name = "emc6d102";
1262 break;
1263 default:
1264 type_name = "lm85";
1265 }
1266 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1267
1268 return 0;
1269 }
1270
1271 static int lm85_probe(struct i2c_client *client,
1272 const struct i2c_device_id *id)
1273 {
1274 struct lm85_data *data;
1275 int err;
1276
1277 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
1278 if (!data)
1279 return -ENOMEM;
1280
1281 i2c_set_clientdata(client, data);
1282 data->type = id->driver_data;
1283 mutex_init(&data->update_lock);
1284
1285 /* Fill in the chip specific driver values */
1286 switch (data->type) {
1287 case adm1027:
1288 case adt7463:
1289 case emc6d100:
1290 case emc6d102:
1291 data->freq_map = adm1027_freq_map;
1292 break;
1293 default:
1294 data->freq_map = lm85_freq_map;
1295 }
1296
1297 /* Set the VRM version */
1298 data->vrm = vid_which_vrm();
1299
1300 /* Initialize the LM85 chip */
1301 lm85_init_client(client);
1302
1303 /* Register sysfs hooks */
1304 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1305 if (err)
1306 goto err_kfree;
1307
1308 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1309 as a sixth digital VID input rather than an analog input. */
1310 data->vid = lm85_read_value(client, LM85_REG_VID);
1311 if (!((data->type == adt7463 || data->type == adt7468) &&
1312 (data->vid & 0x80)))
1313 if ((err = sysfs_create_group(&client->dev.kobj,
1314 &lm85_group_in4)))
1315 goto err_remove_files;
1316
1317 /* The EMC6D100 has 3 additional voltage inputs */
1318 if (data->type == emc6d100)
1319 if ((err = sysfs_create_group(&client->dev.kobj,
1320 &lm85_group_in567)))
1321 goto err_remove_files;
1322
1323 data->hwmon_dev = hwmon_device_register(&client->dev);
1324 if (IS_ERR(data->hwmon_dev)) {
1325 err = PTR_ERR(data->hwmon_dev);
1326 goto err_remove_files;
1327 }
1328
1329 return 0;
1330
1331 /* Error out and cleanup code */
1332 err_remove_files:
1333 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1334 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1335 if (data->type == emc6d100)
1336 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1337 err_kfree:
1338 kfree(data);
1339 return err;
1340 }
1341
1342 static int lm85_remove(struct i2c_client *client)
1343 {
1344 struct lm85_data *data = i2c_get_clientdata(client);
1345 hwmon_device_unregister(data->hwmon_dev);
1346 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1347 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1348 if (data->type == emc6d100)
1349 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1350 kfree(data);
1351 return 0;
1352 }
1353
1354
1355 static int lm85_read_value(struct i2c_client *client, u8 reg)
1356 {
1357 int res;
1358
1359 /* What size location is it? */
1360 switch (reg) {
1361 case LM85_REG_FAN(0): /* Read WORD data */
1362 case LM85_REG_FAN(1):
1363 case LM85_REG_FAN(2):
1364 case LM85_REG_FAN(3):
1365 case LM85_REG_FAN_MIN(0):
1366 case LM85_REG_FAN_MIN(1):
1367 case LM85_REG_FAN_MIN(2):
1368 case LM85_REG_FAN_MIN(3):
1369 case LM85_REG_ALARM1: /* Read both bytes at once */
1370 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1371 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1372 break;
1373 default: /* Read BYTE data */
1374 res = i2c_smbus_read_byte_data(client, reg);
1375 break;
1376 }
1377
1378 return res;
1379 }
1380
1381 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1382 {
1383 switch (reg) {
1384 case LM85_REG_FAN(0): /* Write WORD data */
1385 case LM85_REG_FAN(1):
1386 case LM85_REG_FAN(2):
1387 case LM85_REG_FAN(3):
1388 case LM85_REG_FAN_MIN(0):
1389 case LM85_REG_FAN_MIN(1):
1390 case LM85_REG_FAN_MIN(2):
1391 case LM85_REG_FAN_MIN(3):
1392 /* NOTE: ALARM is read only, so not included here */
1393 i2c_smbus_write_byte_data(client, reg, value & 0xff);
1394 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1395 break;
1396 default: /* Write BYTE data */
1397 i2c_smbus_write_byte_data(client, reg, value);
1398 break;
1399 }
1400 }
1401
1402 static struct lm85_data *lm85_update_device(struct device *dev)
1403 {
1404 struct i2c_client *client = to_i2c_client(dev);
1405 struct lm85_data *data = i2c_get_clientdata(client);
1406 int i;
1407
1408 mutex_lock(&data->update_lock);
1409
1410 if (!data->valid ||
1411 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1412 /* Things that change quickly */
1413 dev_dbg(&client->dev, "Reading sensor values\n");
1414
1415 /* Have to read extended bits first to "freeze" the
1416 * more significant bits that are read later.
1417 * There are 2 additional resolution bits per channel and we
1418 * have room for 4, so we shift them to the left.
1419 */
1420 if (data->type == adm1027 || data->type == adt7463 ||
1421 data->type == adt7468) {
1422 int ext1 = lm85_read_value(client,
1423 ADM1027_REG_EXTEND_ADC1);
1424 int ext2 = lm85_read_value(client,
1425 ADM1027_REG_EXTEND_ADC2);
1426 int val = (ext1 << 8) + ext2;
1427
1428 for (i = 0; i <= 4; i++)
1429 data->in_ext[i] =
1430 ((val >> (i * 2)) & 0x03) << 2;
1431
1432 for (i = 0; i <= 2; i++)
1433 data->temp_ext[i] =
1434 (val >> ((i + 4) * 2)) & 0x0c;
1435 }
1436
1437 data->vid = lm85_read_value(client, LM85_REG_VID);
1438
1439 for (i = 0; i <= 3; ++i) {
1440 data->in[i] =
1441 lm85_read_value(client, LM85_REG_IN(i));
1442 data->fan[i] =
1443 lm85_read_value(client, LM85_REG_FAN(i));
1444 }
1445
1446 if (!((data->type == adt7463 || data->type == adt7468) &&
1447 (data->vid & 0x80))) {
1448 data->in[4] = lm85_read_value(client,
1449 LM85_REG_IN(4));
1450 }
1451
1452 if (data->type == adt7468)
1453 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
1454
1455 for (i = 0; i <= 2; ++i) {
1456 data->temp[i] =
1457 lm85_read_value(client, LM85_REG_TEMP(i));
1458 data->pwm[i] =
1459 lm85_read_value(client, LM85_REG_PWM(i));
1460
1461 if (IS_ADT7468_OFF64(data))
1462 data->temp[i] -= 64;
1463 }
1464
1465 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1466
1467 if (data->type == emc6d100) {
1468 /* Three more voltage sensors */
1469 for (i = 5; i <= 7; ++i) {
1470 data->in[i] = lm85_read_value(client,
1471 EMC6D100_REG_IN(i));
1472 }
1473 /* More alarm bits */
1474 data->alarms |= lm85_read_value(client,
1475 EMC6D100_REG_ALARM3) << 16;
1476 } else if (data->type == emc6d102) {
1477 /* Have to read LSB bits after the MSB ones because
1478 the reading of the MSB bits has frozen the
1479 LSBs (backward from the ADM1027).
1480 */
1481 int ext1 = lm85_read_value(client,
1482 EMC6D102_REG_EXTEND_ADC1);
1483 int ext2 = lm85_read_value(client,
1484 EMC6D102_REG_EXTEND_ADC2);
1485 int ext3 = lm85_read_value(client,
1486 EMC6D102_REG_EXTEND_ADC3);
1487 int ext4 = lm85_read_value(client,
1488 EMC6D102_REG_EXTEND_ADC4);
1489 data->in_ext[0] = ext3 & 0x0f;
1490 data->in_ext[1] = ext4 & 0x0f;
1491 data->in_ext[2] = ext4 >> 4;
1492 data->in_ext[3] = ext3 >> 4;
1493 data->in_ext[4] = ext2 >> 4;
1494
1495 data->temp_ext[0] = ext1 & 0x0f;
1496 data->temp_ext[1] = ext2 & 0x0f;
1497 data->temp_ext[2] = ext1 >> 4;
1498 }
1499
1500 data->last_reading = jiffies;
1501 } /* last_reading */
1502
1503 if (!data->valid ||
1504 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1505 /* Things that don't change often */
1506 dev_dbg(&client->dev, "Reading config values\n");
1507
1508 for (i = 0; i <= 3; ++i) {
1509 data->in_min[i] =
1510 lm85_read_value(client, LM85_REG_IN_MIN(i));
1511 data->in_max[i] =
1512 lm85_read_value(client, LM85_REG_IN_MAX(i));
1513 data->fan_min[i] =
1514 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1515 }
1516
1517 if (!((data->type == adt7463 || data->type == adt7468) &&
1518 (data->vid & 0x80))) {
1519 data->in_min[4] = lm85_read_value(client,
1520 LM85_REG_IN_MIN(4));
1521 data->in_max[4] = lm85_read_value(client,
1522 LM85_REG_IN_MAX(4));
1523 }
1524
1525 if (data->type == emc6d100) {
1526 for (i = 5; i <= 7; ++i) {
1527 data->in_min[i] = lm85_read_value(client,
1528 EMC6D100_REG_IN_MIN(i));
1529 data->in_max[i] = lm85_read_value(client,
1530 EMC6D100_REG_IN_MAX(i));
1531 }
1532 }
1533
1534 for (i = 0; i <= 2; ++i) {
1535 int val;
1536
1537 data->temp_min[i] =
1538 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1539 data->temp_max[i] =
1540 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1541
1542 data->autofan[i].config =
1543 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1544 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1545 data->pwm_freq[i] = val & 0x07;
1546 data->zone[i].range = val >> 4;
1547 data->autofan[i].min_pwm =
1548 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1549 data->zone[i].limit =
1550 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1551 data->zone[i].critical =
1552 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1553
1554 if (IS_ADT7468_OFF64(data)) {
1555 data->temp_min[i] -= 64;
1556 data->temp_max[i] -= 64;
1557 data->zone[i].limit -= 64;
1558 data->zone[i].critical -= 64;
1559 }
1560 }
1561
1562 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1563 data->autofan[0].min_off = (i & 0x20) != 0;
1564 data->autofan[1].min_off = (i & 0x40) != 0;
1565 data->autofan[2].min_off = (i & 0x80) != 0;
1566
1567 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1568 data->zone[0].hyst = i >> 4;
1569 data->zone[1].hyst = i & 0x0f;
1570
1571 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1572 data->zone[2].hyst = i >> 4;
1573
1574 data->last_config = jiffies;
1575 } /* last_config */
1576
1577 data->valid = 1;
1578
1579 mutex_unlock(&data->update_lock);
1580
1581 return data;
1582 }
1583
1584
1585 static int __init sm_lm85_init(void)
1586 {
1587 return i2c_add_driver(&lm85_driver);
1588 }
1589
1590 static void __exit sm_lm85_exit(void)
1591 {
1592 i2c_del_driver(&lm85_driver);
1593 }
1594
1595 MODULE_LICENSE("GPL");
1596 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1597 "Margit Schubert-While <margitsw@t-online.de>, "
1598 "Justin Thiessen <jthiessen@penguincomputing.com>");
1599 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1600
1601 module_init(sm_lm85_init);
1602 module_exit(sm_lm85_exit);
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