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Blackfin arch: remove useless SSYNC() in irq priority code
[linux-2.6/mini2440.git] / drivers / hwmon / lm85.c
blobcfc1ee90f5a39d1934c686a5100a185457c2b8a6
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_LM85C 0x60
76 #define LM85_VERSTEP_LM85B 0x62
77 #define LM85_VERSTEP_ADM1027 0x60
78 #define LM85_VERSTEP_ADT7463 0x62
79 #define LM85_VERSTEP_ADT7463C 0x6A
80 #define LM85_VERSTEP_ADT7468_1 0x71
81 #define LM85_VERSTEP_ADT7468_2 0x72
82 #define LM85_VERSTEP_EMC6D100_A0 0x60
83 #define LM85_VERSTEP_EMC6D100_A1 0x61
84 #define LM85_VERSTEP_EMC6D102 0x65
85
86 #define LM85_REG_CONFIG 0x40
87
88 #define LM85_REG_ALARM1 0x41
89 #define LM85_REG_ALARM2 0x42
90
91 #define LM85_REG_VID 0x43
92
93 /* Automated FAN control */
94 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
95 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
96 #define LM85_REG_AFAN_SPIKE1 0x62
97 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
98 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
99 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
100 #define LM85_REG_AFAN_HYST1 0x6d
101 #define LM85_REG_AFAN_HYST2 0x6e
102
103 #define ADM1027_REG_EXTEND_ADC1 0x76
104 #define ADM1027_REG_EXTEND_ADC2 0x77
105
106 #define EMC6D100_REG_ALARM3 0x7d
107 /* IN5, IN6 and IN7 */
108 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
109 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
110 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
111 #define EMC6D102_REG_EXTEND_ADC1 0x85
112 #define EMC6D102_REG_EXTEND_ADC2 0x86
113 #define EMC6D102_REG_EXTEND_ADC3 0x87
114 #define EMC6D102_REG_EXTEND_ADC4 0x88
115
116
117 /* Conversions. Rounding and limit checking is only done on the TO_REG
118 variants. Note that you should be a bit careful with which arguments
119 these macros are called: arguments may be evaluated more than once.
120 */
121
122 /* IN are scaled acording to built-in resistors */
123 static const int lm85_scaling[] = { /* .001 Volts */
124 2500, 2250, 3300, 5000, 12000,
125 3300, 1500, 1800 /*EMC6D100*/
126 };
127 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
128
129 #define INS_TO_REG(n, val) \
130 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
131
132 #define INSEXT_FROM_REG(n, val, ext) \
133 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
134
135 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
136
137 /* FAN speed is measured using 90kHz clock */
138 static inline u16 FAN_TO_REG(unsigned long val)
139 {
140 if (!val)
141 return 0xffff;
142 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
143 }
144 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
145 5400000 / (val))
146
147 /* Temperature is reported in .001 degC increments */
148 #define TEMP_TO_REG(val) \
149 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
150 #define TEMPEXT_FROM_REG(val, ext) \
151 SCALE(((val) << 4) + (ext), 16, 1000)
152 #define TEMP_FROM_REG(val) ((val) * 1000)
153
154 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
155 #define PWM_FROM_REG(val) (val)
156
157
158 /* ZONEs have the following parameters:
159 * Limit (low) temp, 1. degC
160 * Hysteresis (below limit), 1. degC (0-15)
161 * Range of speed control, .1 degC (2-80)
162 * Critical (high) temp, 1. degC
163 *
164 * FAN PWMs have the following parameters:
165 * Reference Zone, 1, 2, 3, etc.
166 * Spinup time, .05 sec
167 * PWM value at limit/low temp, 1 count
168 * PWM Frequency, 1. Hz
169 * PWM is Min or OFF below limit, flag
170 * Invert PWM output, flag
171 *
172 * Some chips filter the temp, others the fan.
173 * Filter constant (or disabled) .1 seconds
174 */
175
176 /* These are the zone temperature range encodings in .001 degree C */
177 static const int lm85_range_map[] = {
178 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
179 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
180 };
181
182 static int RANGE_TO_REG(int range)
183 {
184 int i;
185
186 /* Find the closest match */
187 for (i = 0; i < 15; ++i) {
188 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
189 break;
190 }
191
192 return i;
193 }
194 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
195
196 /* These are the PWM frequency encodings */
197 static const int lm85_freq_map[8] = { /* 1 Hz */
198 10, 15, 23, 30, 38, 47, 61, 94
199 };
200 static const int adm1027_freq_map[8] = { /* 1 Hz */
201 11, 15, 22, 29, 35, 44, 59, 88
202 };
203
204 static int FREQ_TO_REG(const int *map, int freq)
205 {
206 int i;
207
208 /* Find the closest match */
209 for (i = 0; i < 7; ++i)
210 if (freq <= (map[i] + map[i + 1]) / 2)
211 break;
212 return i;
213 }
214
215 static int FREQ_FROM_REG(const int *map, u8 reg)
216 {
217 return map[reg & 0x07];
218 }
219
220 /* Since we can't use strings, I'm abusing these numbers
221 * to stand in for the following meanings:
222 * 1 -- PWM responds to Zone 1
223 * 2 -- PWM responds to Zone 2
224 * 3 -- PWM responds to Zone 3
225 * 23 -- PWM responds to the higher temp of Zone 2 or 3
226 * 123 -- PWM responds to highest of Zone 1, 2, or 3
227 * 0 -- PWM is always at 0% (ie, off)
228 * -1 -- PWM is always at 100%
229 * -2 -- PWM responds to manual control
230 */
231
232 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
233 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
234
235 static int ZONE_TO_REG(int zone)
236 {
237 int i;
238
239 for (i = 0; i <= 7; ++i)
240 if (zone == lm85_zone_map[i])
241 break;
242 if (i > 7) /* Not found. */
243 i = 3; /* Always 100% */
244 return i << 5;
245 }
246
247 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
248 #define HYST_FROM_REG(val) ((val) * 1000)
249
250 /* Chip sampling rates
251 *
252 * Some sensors are not updated more frequently than once per second
253 * so it doesn't make sense to read them more often than that.
254 * We cache the results and return the saved data if the driver
255 * is called again before a second has elapsed.
256 *
257 * Also, there is significant configuration data for this chip
258 * given the automatic PWM fan control that is possible. There
259 * are about 47 bytes of config data to only 22 bytes of actual
260 * readings. So, we keep the config data up to date in the cache
261 * when it is written and only sample it once every 1 *minute*
262 */
263 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
264 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
265
266 /* LM85 can automatically adjust fan speeds based on temperature
267 * This structure encapsulates an entire Zone config. There are
268 * three zones (one for each temperature input) on the lm85
269 */
270 struct lm85_zone {
271 s8 limit; /* Low temp limit */
272 u8 hyst; /* Low limit hysteresis. (0-15) */
273 u8 range; /* Temp range, encoded */
274 s8 critical; /* "All fans ON" temp limit */
275 u8 off_desired; /* Actual "off" temperature specified. Preserved
276 * to prevent "drift" as other autofan control
277 * values change.
278 */
279 u8 max_desired; /* Actual "max" temperature specified. Preserved
280 * to prevent "drift" as other autofan control
281 * values change.
282 */
283 };
284
285 struct lm85_autofan {
286 u8 config; /* Register value */
287 u8 min_pwm; /* Minimum PWM value, encoded */
288 u8 min_off; /* Min PWM or OFF below "limit", flag */
289 };
290
291 /* For each registered chip, we need to keep some data in memory.
292 The structure is dynamically allocated. */
293 struct lm85_data {
294 struct device *hwmon_dev;
295 const int *freq_map;
296 enum chips type;
297
298 struct mutex update_lock;
299 int valid; /* !=0 if following fields are valid */
300 unsigned long last_reading; /* In jiffies */
301 unsigned long last_config; /* In jiffies */
302
303 u8 in[8]; /* Register value */
304 u8 in_max[8]; /* Register value */
305 u8 in_min[8]; /* Register value */
306 s8 temp[3]; /* Register value */
307 s8 temp_min[3]; /* Register value */
308 s8 temp_max[3]; /* Register value */
309 u16 fan[4]; /* Register value */
310 u16 fan_min[4]; /* Register value */
311 u8 pwm[3]; /* Register value */
312 u8 pwm_freq[3]; /* Register encoding */
313 u8 temp_ext[3]; /* Decoded values */
314 u8 in_ext[8]; /* Decoded values */
315 u8 vid; /* Register value */
316 u8 vrm; /* VRM version */
317 u32 alarms; /* Register encoding, combined */
318 u8 cfg5; /* Config Register 5 on ADT7468 */
319 struct lm85_autofan autofan[3];
320 struct lm85_zone zone[3];
321 };
322
323 static int lm85_detect(struct i2c_client *client, int kind,
324 struct i2c_board_info *info);
325 static int lm85_probe(struct i2c_client *client,
326 const struct i2c_device_id *id);
327 static int lm85_remove(struct i2c_client *client);
328
329 static int lm85_read_value(struct i2c_client *client, u8 reg);
330 static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
331 static struct lm85_data *lm85_update_device(struct device *dev);
332
333
334 static const struct i2c_device_id lm85_id[] = {
335 { "adm1027", adm1027 },
336 { "adt7463", adt7463 },
337 { "lm85", any_chip },
338 { "lm85b", lm85b },
339 { "lm85c", lm85c },
340 { "emc6d100", emc6d100 },
341 { "emc6d101", emc6d100 },
342 { "emc6d102", emc6d102 },
343 { }
344 };
345 MODULE_DEVICE_TABLE(i2c, lm85_id);
346
347 static struct i2c_driver lm85_driver = {
348 .class = I2C_CLASS_HWMON,
349 .driver = {
350 .name = "lm85",
351 },
352 .probe = lm85_probe,
353 .remove = lm85_remove,
354 .id_table = lm85_id,
355 .detect = lm85_detect,
356 .address_data = &addr_data,
357 };
358
359
360 /* 4 Fans */
361 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
362 char *buf)
363 {
364 int nr = to_sensor_dev_attr(attr)->index;
365 struct lm85_data *data = lm85_update_device(dev);
366 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
367 }
368
369 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
370 char *buf)
371 {
372 int nr = to_sensor_dev_attr(attr)->index;
373 struct lm85_data *data = lm85_update_device(dev);
374 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
375 }
376
377 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
378 const char *buf, size_t count)
379 {
380 int nr = to_sensor_dev_attr(attr)->index;
381 struct i2c_client *client = to_i2c_client(dev);
382 struct lm85_data *data = i2c_get_clientdata(client);
383 unsigned long val = simple_strtoul(buf, NULL, 10);
384
385 mutex_lock(&data->update_lock);
386 data->fan_min[nr] = FAN_TO_REG(val);
387 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
388 mutex_unlock(&data->update_lock);
389 return count;
390 }
391
392 #define show_fan_offset(offset) \
393 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
394 show_fan, NULL, offset - 1); \
395 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
396 show_fan_min, set_fan_min, offset - 1)
397
398 show_fan_offset(1);
399 show_fan_offset(2);
400 show_fan_offset(3);
401 show_fan_offset(4);
402
403 /* vid, vrm, alarms */
404
405 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
406 char *buf)
407 {
408 struct lm85_data *data = lm85_update_device(dev);
409 int vid;
410
411 if (data->type == adt7463 && (data->vid & 0x80)) {
412 /* 6-pin VID (VRM 10) */
413 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
414 } else {
415 /* 5-pin VID (VRM 9) */
416 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
417 }
418
419 return sprintf(buf, "%d\n", vid);
420 }
421
422 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
423
424 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
425 char *buf)
426 {
427 struct lm85_data *data = dev_get_drvdata(dev);
428 return sprintf(buf, "%ld\n", (long) data->vrm);
429 }
430
431 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
432 const char *buf, size_t count)
433 {
434 struct lm85_data *data = dev_get_drvdata(dev);
435 data->vrm = simple_strtoul(buf, NULL, 10);
436 return count;
437 }
438
439 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
440
441 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
442 *attr, char *buf)
443 {
444 struct lm85_data *data = lm85_update_device(dev);
445 return sprintf(buf, "%u\n", data->alarms);
446 }
447
448 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
449
450 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
451 char *buf)
452 {
453 int nr = to_sensor_dev_attr(attr)->index;
454 struct lm85_data *data = lm85_update_device(dev);
455 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
456 }
457
458 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
459 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
460 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
461 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
462 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
463 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
464 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
465 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
466 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
467 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
468 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
469 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
470 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
471 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
472 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
473 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
474 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
475
476 /* pwm */
477
478 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
479 char *buf)
480 {
481 int nr = to_sensor_dev_attr(attr)->index;
482 struct lm85_data *data = lm85_update_device(dev);
483 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
484 }
485
486 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
487 const char *buf, size_t count)
488 {
489 int nr = to_sensor_dev_attr(attr)->index;
490 struct i2c_client *client = to_i2c_client(dev);
491 struct lm85_data *data = i2c_get_clientdata(client);
492 long val = simple_strtol(buf, NULL, 10);
493
494 mutex_lock(&data->update_lock);
495 data->pwm[nr] = PWM_TO_REG(val);
496 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
497 mutex_unlock(&data->update_lock);
498 return count;
499 }
500
501 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
502 *attr, char *buf)
503 {
504 int nr = to_sensor_dev_attr(attr)->index;
505 struct lm85_data *data = lm85_update_device(dev);
506 int pwm_zone, enable;
507
508 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
509 switch (pwm_zone) {
510 case -1: /* PWM is always at 100% */
511 enable = 0;
512 break;
513 case 0: /* PWM is always at 0% */
514 case -2: /* PWM responds to manual control */
515 enable = 1;
516 break;
517 default: /* PWM in automatic mode */
518 enable = 2;
519 }
520 return sprintf(buf, "%d\n", enable);
521 }
522
523 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
524 *attr, const char *buf, size_t count)
525 {
526 int nr = to_sensor_dev_attr(attr)->index;
527 struct i2c_client *client = to_i2c_client(dev);
528 struct lm85_data *data = i2c_get_clientdata(client);
529 long val = simple_strtol(buf, NULL, 10);
530 u8 config;
531
532 switch (val) {
533 case 0:
534 config = 3;
535 break;
536 case 1:
537 config = 7;
538 break;
539 case 2:
540 /* Here we have to choose arbitrarily one of the 5 possible
541 configurations; I go for the safest */
542 config = 6;
543 break;
544 default:
545 return -EINVAL;
546 }
547
548 mutex_lock(&data->update_lock);
549 data->autofan[nr].config = lm85_read_value(client,
550 LM85_REG_AFAN_CONFIG(nr));
551 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
552 | (config << 5);
553 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
554 data->autofan[nr].config);
555 mutex_unlock(&data->update_lock);
556 return count;
557 }
558
559 static ssize_t show_pwm_freq(struct device *dev,
560 struct device_attribute *attr, char *buf)
561 {
562 int nr = to_sensor_dev_attr(attr)->index;
563 struct lm85_data *data = lm85_update_device(dev);
564 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->freq_map,
565 data->pwm_freq[nr]));
566 }
567
568 static ssize_t set_pwm_freq(struct device *dev,
569 struct device_attribute *attr, const char *buf, size_t count)
570 {
571 int nr = to_sensor_dev_attr(attr)->index;
572 struct i2c_client *client = to_i2c_client(dev);
573 struct lm85_data *data = i2c_get_clientdata(client);
574 long val = simple_strtol(buf, NULL, 10);
575
576 mutex_lock(&data->update_lock);
577 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
578 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
579 (data->zone[nr].range << 4)
580 | data->pwm_freq[nr]);
581 mutex_unlock(&data->update_lock);
582 return count;
583 }
584
585 #define show_pwm_reg(offset) \
586 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
587 show_pwm, set_pwm, offset - 1); \
588 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
589 show_pwm_enable, set_pwm_enable, offset - 1); \
590 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
591 show_pwm_freq, set_pwm_freq, offset - 1)
592
593 show_pwm_reg(1);
594 show_pwm_reg(2);
595 show_pwm_reg(3);
596
597 /* Voltages */
598
599 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
600 char *buf)
601 {
602 int nr = to_sensor_dev_attr(attr)->index;
603 struct lm85_data *data = lm85_update_device(dev);
604 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
605 data->in_ext[nr]));
606 }
607
608 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
609 char *buf)
610 {
611 int nr = to_sensor_dev_attr(attr)->index;
612 struct lm85_data *data = lm85_update_device(dev);
613 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
614 }
615
616 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
617 const char *buf, size_t count)
618 {
619 int nr = to_sensor_dev_attr(attr)->index;
620 struct i2c_client *client = to_i2c_client(dev);
621 struct lm85_data *data = i2c_get_clientdata(client);
622 long val = simple_strtol(buf, NULL, 10);
623
624 mutex_lock(&data->update_lock);
625 data->in_min[nr] = INS_TO_REG(nr, val);
626 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
627 mutex_unlock(&data->update_lock);
628 return count;
629 }
630
631 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
632 char *buf)
633 {
634 int nr = to_sensor_dev_attr(attr)->index;
635 struct lm85_data *data = lm85_update_device(dev);
636 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
637 }
638
639 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
640 const char *buf, size_t count)
641 {
642 int nr = to_sensor_dev_attr(attr)->index;
643 struct i2c_client *client = to_i2c_client(dev);
644 struct lm85_data *data = i2c_get_clientdata(client);
645 long val = simple_strtol(buf, NULL, 10);
646
647 mutex_lock(&data->update_lock);
648 data->in_max[nr] = INS_TO_REG(nr, val);
649 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
650 mutex_unlock(&data->update_lock);
651 return count;
652 }
653
654 #define show_in_reg(offset) \
655 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
656 show_in, NULL, offset); \
657 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
658 show_in_min, set_in_min, offset); \
659 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
660 show_in_max, set_in_max, offset)
661
662 show_in_reg(0);
663 show_in_reg(1);
664 show_in_reg(2);
665 show_in_reg(3);
666 show_in_reg(4);
667 show_in_reg(5);
668 show_in_reg(6);
669 show_in_reg(7);
670
671 /* Temps */
672
673 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
674 char *buf)
675 {
676 int nr = to_sensor_dev_attr(attr)->index;
677 struct lm85_data *data = lm85_update_device(dev);
678 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
679 data->temp_ext[nr]));
680 }
681
682 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
683 char *buf)
684 {
685 int nr = to_sensor_dev_attr(attr)->index;
686 struct lm85_data *data = lm85_update_device(dev);
687 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
688 }
689
690 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
691 const char *buf, size_t count)
692 {
693 int nr = to_sensor_dev_attr(attr)->index;
694 struct i2c_client *client = to_i2c_client(dev);
695 struct lm85_data *data = i2c_get_clientdata(client);
696 long val = simple_strtol(buf, NULL, 10);
697
698 if (IS_ADT7468_OFF64(data))
699 val += 64;
700
701 mutex_lock(&data->update_lock);
702 data->temp_min[nr] = TEMP_TO_REG(val);
703 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
704 mutex_unlock(&data->update_lock);
705 return count;
706 }
707
708 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
709 char *buf)
710 {
711 int nr = to_sensor_dev_attr(attr)->index;
712 struct lm85_data *data = lm85_update_device(dev);
713 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
714 }
715
716 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
717 const char *buf, size_t count)
718 {
719 int nr = to_sensor_dev_attr(attr)->index;
720 struct i2c_client *client = to_i2c_client(dev);
721 struct lm85_data *data = i2c_get_clientdata(client);
722 long val = simple_strtol(buf, NULL, 10);
723
724 if (IS_ADT7468_OFF64(data))
725 val += 64;
726
727 mutex_lock(&data->update_lock);
728 data->temp_max[nr] = TEMP_TO_REG(val);
729 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
730 mutex_unlock(&data->update_lock);
731 return count;
732 }
733
734 #define show_temp_reg(offset) \
735 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
736 show_temp, NULL, offset - 1); \
737 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
738 show_temp_min, set_temp_min, offset - 1); \
739 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
740 show_temp_max, set_temp_max, offset - 1);
741
742 show_temp_reg(1);
743 show_temp_reg(2);
744 show_temp_reg(3);
745
746
747 /* Automatic PWM control */
748
749 static ssize_t show_pwm_auto_channels(struct device *dev,
750 struct device_attribute *attr, char *buf)
751 {
752 int nr = to_sensor_dev_attr(attr)->index;
753 struct lm85_data *data = lm85_update_device(dev);
754 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
755 }
756
757 static ssize_t set_pwm_auto_channels(struct device *dev,
758 struct device_attribute *attr, const char *buf, size_t count)
759 {
760 int nr = to_sensor_dev_attr(attr)->index;
761 struct i2c_client *client = to_i2c_client(dev);
762 struct lm85_data *data = i2c_get_clientdata(client);
763 long val = simple_strtol(buf, NULL, 10);
764
765 mutex_lock(&data->update_lock);
766 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
767 | ZONE_TO_REG(val);
768 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
769 data->autofan[nr].config);
770 mutex_unlock(&data->update_lock);
771 return count;
772 }
773
774 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
775 struct device_attribute *attr, char *buf)
776 {
777 int nr = to_sensor_dev_attr(attr)->index;
778 struct lm85_data *data = lm85_update_device(dev);
779 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
780 }
781
782 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
783 struct device_attribute *attr, const char *buf, size_t count)
784 {
785 int nr = to_sensor_dev_attr(attr)->index;
786 struct i2c_client *client = to_i2c_client(dev);
787 struct lm85_data *data = i2c_get_clientdata(client);
788 long val = simple_strtol(buf, NULL, 10);
789
790 mutex_lock(&data->update_lock);
791 data->autofan[nr].min_pwm = PWM_TO_REG(val);
792 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
793 data->autofan[nr].min_pwm);
794 mutex_unlock(&data->update_lock);
795 return count;
796 }
797
798 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
799 struct device_attribute *attr, char *buf)
800 {
801 int nr = to_sensor_dev_attr(attr)->index;
802 struct lm85_data *data = lm85_update_device(dev);
803 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
804 }
805
806 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
807 struct device_attribute *attr, const char *buf, size_t count)
808 {
809 int nr = to_sensor_dev_attr(attr)->index;
810 struct i2c_client *client = to_i2c_client(dev);
811 struct lm85_data *data = i2c_get_clientdata(client);
812 long val = simple_strtol(buf, NULL, 10);
813 u8 tmp;
814
815 mutex_lock(&data->update_lock);
816 data->autofan[nr].min_off = val;
817 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
818 tmp &= ~(0x20 << nr);
819 if (data->autofan[nr].min_off)
820 tmp |= 0x20 << nr;
821 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
822 mutex_unlock(&data->update_lock);
823 return count;
824 }
825
826 #define pwm_auto(offset) \
827 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
828 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
829 set_pwm_auto_channels, offset - 1); \
830 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
831 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
832 set_pwm_auto_pwm_min, offset - 1); \
833 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
834 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
835 set_pwm_auto_pwm_minctl, offset - 1)
836
837 pwm_auto(1);
838 pwm_auto(2);
839 pwm_auto(3);
840
841 /* Temperature settings for automatic PWM control */
842
843 static ssize_t show_temp_auto_temp_off(struct device *dev,
844 struct device_attribute *attr, char *buf)
845 {
846 int nr = to_sensor_dev_attr(attr)->index;
847 struct lm85_data *data = lm85_update_device(dev);
848 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
849 HYST_FROM_REG(data->zone[nr].hyst));
850 }
851
852 static ssize_t set_temp_auto_temp_off(struct device *dev,
853 struct device_attribute *attr, const char *buf, size_t count)
854 {
855 int nr = to_sensor_dev_attr(attr)->index;
856 struct i2c_client *client = to_i2c_client(dev);
857 struct lm85_data *data = i2c_get_clientdata(client);
858 int min;
859 long val = simple_strtol(buf, NULL, 10);
860
861 mutex_lock(&data->update_lock);
862 min = TEMP_FROM_REG(data->zone[nr].limit);
863 data->zone[nr].off_desired = TEMP_TO_REG(val);
864 data->zone[nr].hyst = HYST_TO_REG(min - val);
865 if (nr == 0 || nr == 1) {
866 lm85_write_value(client, LM85_REG_AFAN_HYST1,
867 (data->zone[0].hyst << 4)
868 | data->zone[1].hyst);
869 } else {
870 lm85_write_value(client, LM85_REG_AFAN_HYST2,
871 (data->zone[2].hyst << 4));
872 }
873 mutex_unlock(&data->update_lock);
874 return count;
875 }
876
877 static ssize_t show_temp_auto_temp_min(struct device *dev,
878 struct device_attribute *attr, char *buf)
879 {
880 int nr = to_sensor_dev_attr(attr)->index;
881 struct lm85_data *data = lm85_update_device(dev);
882 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
883 }
884
885 static ssize_t set_temp_auto_temp_min(struct device *dev,
886 struct device_attribute *attr, const char *buf, size_t count)
887 {
888 int nr = to_sensor_dev_attr(attr)->index;
889 struct i2c_client *client = to_i2c_client(dev);
890 struct lm85_data *data = i2c_get_clientdata(client);
891 long val = simple_strtol(buf, NULL, 10);
892
893 mutex_lock(&data->update_lock);
894 data->zone[nr].limit = TEMP_TO_REG(val);
895 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
896 data->zone[nr].limit);
897
898 /* Update temp_auto_max and temp_auto_range */
899 data->zone[nr].range = RANGE_TO_REG(
900 TEMP_FROM_REG(data->zone[nr].max_desired) -
901 TEMP_FROM_REG(data->zone[nr].limit));
902 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
903 ((data->zone[nr].range & 0x0f) << 4)
904 | (data->pwm_freq[nr] & 0x07));
905
906 /* Update temp_auto_hyst and temp_auto_off */
907 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
908 data->zone[nr].limit) - TEMP_FROM_REG(
909 data->zone[nr].off_desired));
910 if (nr == 0 || nr == 1) {
911 lm85_write_value(client, LM85_REG_AFAN_HYST1,
912 (data->zone[0].hyst << 4)
913 | data->zone[1].hyst);
914 } else {
915 lm85_write_value(client, LM85_REG_AFAN_HYST2,
916 (data->zone[2].hyst << 4));
917 }
918 mutex_unlock(&data->update_lock);
919 return count;
920 }
921
922 static ssize_t show_temp_auto_temp_max(struct device *dev,
923 struct device_attribute *attr, char *buf)
924 {
925 int nr = to_sensor_dev_attr(attr)->index;
926 struct lm85_data *data = lm85_update_device(dev);
927 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
928 RANGE_FROM_REG(data->zone[nr].range));
929 }
930
931 static ssize_t set_temp_auto_temp_max(struct device *dev,
932 struct device_attribute *attr, const char *buf, size_t count)
933 {
934 int nr = to_sensor_dev_attr(attr)->index;
935 struct i2c_client *client = to_i2c_client(dev);
936 struct lm85_data *data = i2c_get_clientdata(client);
937 int min;
938 long val = simple_strtol(buf, NULL, 10);
939
940 mutex_lock(&data->update_lock);
941 min = TEMP_FROM_REG(data->zone[nr].limit);
942 data->zone[nr].max_desired = TEMP_TO_REG(val);
943 data->zone[nr].range = RANGE_TO_REG(
944 val - min);
945 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
946 ((data->zone[nr].range & 0x0f) << 4)
947 | (data->pwm_freq[nr] & 0x07));
948 mutex_unlock(&data->update_lock);
949 return count;
950 }
951
952 static ssize_t show_temp_auto_temp_crit(struct device *dev,
953 struct device_attribute *attr, char *buf)
954 {
955 int nr = to_sensor_dev_attr(attr)->index;
956 struct lm85_data *data = lm85_update_device(dev);
957 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
958 }
959
960 static ssize_t set_temp_auto_temp_crit(struct device *dev,
961 struct device_attribute *attr, const char *buf, size_t count)
962 {
963 int nr = to_sensor_dev_attr(attr)->index;
964 struct i2c_client *client = to_i2c_client(dev);
965 struct lm85_data *data = i2c_get_clientdata(client);
966 long val = simple_strtol(buf, NULL, 10);
967
968 mutex_lock(&data->update_lock);
969 data->zone[nr].critical = TEMP_TO_REG(val);
970 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
971 data->zone[nr].critical);
972 mutex_unlock(&data->update_lock);
973 return count;
974 }
975
976 #define temp_auto(offset) \
977 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
978 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
979 set_temp_auto_temp_off, offset - 1); \
980 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
981 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
982 set_temp_auto_temp_min, offset - 1); \
983 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
984 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
985 set_temp_auto_temp_max, offset - 1); \
986 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
987 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
988 set_temp_auto_temp_crit, offset - 1);
989
990 temp_auto(1);
991 temp_auto(2);
992 temp_auto(3);
993
994 static struct attribute *lm85_attributes[] = {
995 &sensor_dev_attr_fan1_input.dev_attr.attr,
996 &sensor_dev_attr_fan2_input.dev_attr.attr,
997 &sensor_dev_attr_fan3_input.dev_attr.attr,
998 &sensor_dev_attr_fan4_input.dev_attr.attr,
999 &sensor_dev_attr_fan1_min.dev_attr.attr,
1000 &sensor_dev_attr_fan2_min.dev_attr.attr,
1001 &sensor_dev_attr_fan3_min.dev_attr.attr,
1002 &sensor_dev_attr_fan4_min.dev_attr.attr,
1003 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1004 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1005 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1006 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1007
1008 &sensor_dev_attr_pwm1.dev_attr.attr,
1009 &sensor_dev_attr_pwm2.dev_attr.attr,
1010 &sensor_dev_attr_pwm3.dev_attr.attr,
1011 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1012 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1013 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1014 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1015 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1016 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1017
1018 &sensor_dev_attr_in0_input.dev_attr.attr,
1019 &sensor_dev_attr_in1_input.dev_attr.attr,
1020 &sensor_dev_attr_in2_input.dev_attr.attr,
1021 &sensor_dev_attr_in3_input.dev_attr.attr,
1022 &sensor_dev_attr_in0_min.dev_attr.attr,
1023 &sensor_dev_attr_in1_min.dev_attr.attr,
1024 &sensor_dev_attr_in2_min.dev_attr.attr,
1025 &sensor_dev_attr_in3_min.dev_attr.attr,
1026 &sensor_dev_attr_in0_max.dev_attr.attr,
1027 &sensor_dev_attr_in1_max.dev_attr.attr,
1028 &sensor_dev_attr_in2_max.dev_attr.attr,
1029 &sensor_dev_attr_in3_max.dev_attr.attr,
1030 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1031 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1032 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1033 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1034
1035 &sensor_dev_attr_temp1_input.dev_attr.attr,
1036 &sensor_dev_attr_temp2_input.dev_attr.attr,
1037 &sensor_dev_attr_temp3_input.dev_attr.attr,
1038 &sensor_dev_attr_temp1_min.dev_attr.attr,
1039 &sensor_dev_attr_temp2_min.dev_attr.attr,
1040 &sensor_dev_attr_temp3_min.dev_attr.attr,
1041 &sensor_dev_attr_temp1_max.dev_attr.attr,
1042 &sensor_dev_attr_temp2_max.dev_attr.attr,
1043 &sensor_dev_attr_temp3_max.dev_attr.attr,
1044 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1045 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1046 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1047 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1048 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1049
1050 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1051 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1052 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1053 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1054 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1055 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1056 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1057 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1058 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1059
1060 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1061 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1062 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1063 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1064 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1065 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1066 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1067 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1068 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1069 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1070 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1071 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1072
1073 &dev_attr_vrm.attr,
1074 &dev_attr_cpu0_vid.attr,
1075 &dev_attr_alarms.attr,
1076 NULL
1077 };
1078
1079 static const struct attribute_group lm85_group = {
1080 .attrs = lm85_attributes,
1081 };
1082
1083 static struct attribute *lm85_attributes_in4[] = {
1084 &sensor_dev_attr_in4_input.dev_attr.attr,
1085 &sensor_dev_attr_in4_min.dev_attr.attr,
1086 &sensor_dev_attr_in4_max.dev_attr.attr,
1087 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1088 NULL
1089 };
1090
1091 static const struct attribute_group lm85_group_in4 = {
1092 .attrs = lm85_attributes_in4,
1093 };
1094
1095 static struct attribute *lm85_attributes_in567[] = {
1096 &sensor_dev_attr_in5_input.dev_attr.attr,
1097 &sensor_dev_attr_in6_input.dev_attr.attr,
1098 &sensor_dev_attr_in7_input.dev_attr.attr,
1099 &sensor_dev_attr_in5_min.dev_attr.attr,
1100 &sensor_dev_attr_in6_min.dev_attr.attr,
1101 &sensor_dev_attr_in7_min.dev_attr.attr,
1102 &sensor_dev_attr_in5_max.dev_attr.attr,
1103 &sensor_dev_attr_in6_max.dev_attr.attr,
1104 &sensor_dev_attr_in7_max.dev_attr.attr,
1105 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1106 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1107 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1108 NULL
1109 };
1110
1111 static const struct attribute_group lm85_group_in567 = {
1112 .attrs = lm85_attributes_in567,
1113 };
1114
1115 static void lm85_init_client(struct i2c_client *client)
1116 {
1117 int value;
1118
1119 /* Start monitoring if needed */
1120 value = lm85_read_value(client, LM85_REG_CONFIG);
1121 if (!(value & 0x01)) {
1122 dev_info(&client->dev, "Starting monitoring\n");
1123 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1124 }
1125
1126 /* Warn about unusual configuration bits */
1127 if (value & 0x02)
1128 dev_warn(&client->dev, "Device configuration is locked\n");
1129 if (!(value & 0x04))
1130 dev_warn(&client->dev, "Device is not ready\n");
1131 }
1132
1133 /* Return 0 if detection is successful, -ENODEV otherwise */
1134 static int lm85_detect(struct i2c_client *client, int kind,
1135 struct i2c_board_info *info)
1136 {
1137 struct i2c_adapter *adapter = client->adapter;
1138 int address = client->addr;
1139 const char *type_name;
1140
1141 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1142 /* We need to be able to do byte I/O */
1143 return -ENODEV;
1144 }
1145
1146 /* If auto-detecting, determine the chip type */
1147 if (kind < 0) {
1148 int company = lm85_read_value(client, LM85_REG_COMPANY);
1149 int verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1150
1151 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
1152 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1153 address, company, verstep);
1154
1155 /* All supported chips have the version in common */
1156 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC) {
1157 dev_dbg(&adapter->dev, "Autodetection failed: "
1158 "unsupported version\n");
1159 return -ENODEV;
1160 }
1161 kind = any_chip;
1162
1163 /* Now, refine the detection */
1164 if (company == LM85_COMPANY_NATIONAL) {
1165 switch (verstep) {
1166 case LM85_VERSTEP_LM85C:
1167 kind = lm85c;
1168 break;
1169 case LM85_VERSTEP_LM85B:
1170 kind = lm85b;
1171 break;
1172 }
1173 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1174 switch (verstep) {
1175 case LM85_VERSTEP_ADM1027:
1176 kind = adm1027;
1177 break;
1178 case LM85_VERSTEP_ADT7463:
1179 case LM85_VERSTEP_ADT7463C:
1180 kind = adt7463;
1181 break;
1182 case LM85_VERSTEP_ADT7468_1:
1183 case LM85_VERSTEP_ADT7468_2:
1184 kind = adt7468;
1185 break;
1186 }
1187 } else if (company == LM85_COMPANY_SMSC) {
1188 switch (verstep) {
1189 case LM85_VERSTEP_EMC6D100_A0:
1190 case LM85_VERSTEP_EMC6D100_A1:
1191 /* Note: we can't tell a '100 from a '101 */
1192 kind = emc6d100;
1193 break;
1194 case LM85_VERSTEP_EMC6D102:
1195 kind = emc6d102;
1196 break;
1197 }
1198 } else {
1199 dev_dbg(&adapter->dev, "Autodetection failed: "
1200 "unknown vendor\n");
1201 return -ENODEV;
1202 }
1203 }
1204
1205 switch (kind) {
1206 case lm85b:
1207 type_name = "lm85b";
1208 break;
1209 case lm85c:
1210 type_name = "lm85c";
1211 break;
1212 case adm1027:
1213 type_name = "adm1027";
1214 break;
1215 case adt7463:
1216 type_name = "adt7463";
1217 break;
1218 case adt7468:
1219 type_name = "adt7468";
1220 break;
1221 case emc6d100:
1222 type_name = "emc6d100";
1223 break;
1224 case emc6d102:
1225 type_name = "emc6d102";
1226 break;
1227 default:
1228 type_name = "lm85";
1229 }
1230 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1231
1232 return 0;
1233 }
1234
1235 static int lm85_probe(struct i2c_client *client,
1236 const struct i2c_device_id *id)
1237 {
1238 struct lm85_data *data;
1239 int err;
1240
1241 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
1242 if (!data)
1243 return -ENOMEM;
1244
1245 i2c_set_clientdata(client, data);
1246 data->type = id->driver_data;
1247 mutex_init(&data->update_lock);
1248
1249 /* Fill in the chip specific driver values */
1250 switch (data->type) {
1251 case adm1027:
1252 case adt7463:
1253 case emc6d100:
1254 case emc6d102:
1255 data->freq_map = adm1027_freq_map;
1256 break;
1257 default:
1258 data->freq_map = lm85_freq_map;
1259 }
1260
1261 /* Set the VRM version */
1262 data->vrm = vid_which_vrm();
1263
1264 /* Initialize the LM85 chip */
1265 lm85_init_client(client);
1266
1267 /* Register sysfs hooks */
1268 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1269 if (err)
1270 goto err_kfree;
1271
1272 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1273 as a sixth digital VID input rather than an analog input. */
1274 data->vid = lm85_read_value(client, LM85_REG_VID);
1275 if (!((data->type == adt7463 || data->type == adt7468) &&
1276 (data->vid & 0x80)))
1277 if ((err = sysfs_create_group(&client->dev.kobj,
1278 &lm85_group_in4)))
1279 goto err_remove_files;
1280
1281 /* The EMC6D100 has 3 additional voltage inputs */
1282 if (data->type == emc6d100)
1283 if ((err = sysfs_create_group(&client->dev.kobj,
1284 &lm85_group_in567)))
1285 goto err_remove_files;
1286
1287 data->hwmon_dev = hwmon_device_register(&client->dev);
1288 if (IS_ERR(data->hwmon_dev)) {
1289 err = PTR_ERR(data->hwmon_dev);
1290 goto err_remove_files;
1291 }
1292
1293 return 0;
1294
1295 /* Error out and cleanup code */
1296 err_remove_files:
1297 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1298 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1299 if (data->type == emc6d100)
1300 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1301 err_kfree:
1302 kfree(data);
1303 return err;
1304 }
1305
1306 static int lm85_remove(struct i2c_client *client)
1307 {
1308 struct lm85_data *data = i2c_get_clientdata(client);
1309 hwmon_device_unregister(data->hwmon_dev);
1310 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1311 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1312 if (data->type == emc6d100)
1313 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1314 kfree(data);
1315 return 0;
1316 }
1317
1318
1319 static int lm85_read_value(struct i2c_client *client, u8 reg)
1320 {
1321 int res;
1322
1323 /* What size location is it? */
1324 switch (reg) {
1325 case LM85_REG_FAN(0): /* Read WORD data */
1326 case LM85_REG_FAN(1):
1327 case LM85_REG_FAN(2):
1328 case LM85_REG_FAN(3):
1329 case LM85_REG_FAN_MIN(0):
1330 case LM85_REG_FAN_MIN(1):
1331 case LM85_REG_FAN_MIN(2):
1332 case LM85_REG_FAN_MIN(3):
1333 case LM85_REG_ALARM1: /* Read both bytes at once */
1334 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1335 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1336 break;
1337 default: /* Read BYTE data */
1338 res = i2c_smbus_read_byte_data(client, reg);
1339 break;
1340 }
1341
1342 return res;
1343 }
1344
1345 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1346 {
1347 switch (reg) {
1348 case LM85_REG_FAN(0): /* Write WORD data */
1349 case LM85_REG_FAN(1):
1350 case LM85_REG_FAN(2):
1351 case LM85_REG_FAN(3):
1352 case LM85_REG_FAN_MIN(0):
1353 case LM85_REG_FAN_MIN(1):
1354 case LM85_REG_FAN_MIN(2):
1355 case LM85_REG_FAN_MIN(3):
1356 /* NOTE: ALARM is read only, so not included here */
1357 i2c_smbus_write_byte_data(client, reg, value & 0xff);
1358 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1359 break;
1360 default: /* Write BYTE data */
1361 i2c_smbus_write_byte_data(client, reg, value);
1362 break;
1363 }
1364 }
1365
1366 static struct lm85_data *lm85_update_device(struct device *dev)
1367 {
1368 struct i2c_client *client = to_i2c_client(dev);
1369 struct lm85_data *data = i2c_get_clientdata(client);
1370 int i;
1371
1372 mutex_lock(&data->update_lock);
1373
1374 if (!data->valid ||
1375 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1376 /* Things that change quickly */
1377 dev_dbg(&client->dev, "Reading sensor values\n");
1378
1379 /* Have to read extended bits first to "freeze" the
1380 * more significant bits that are read later.
1381 * There are 2 additional resolution bits per channel and we
1382 * have room for 4, so we shift them to the left.
1383 */
1384 if (data->type == adm1027 || data->type == adt7463 ||
1385 data->type == adt7468) {
1386 int ext1 = lm85_read_value(client,
1387 ADM1027_REG_EXTEND_ADC1);
1388 int ext2 = lm85_read_value(client,
1389 ADM1027_REG_EXTEND_ADC2);
1390 int val = (ext1 << 8) + ext2;
1391
1392 for (i = 0; i <= 4; i++)
1393 data->in_ext[i] =
1394 ((val >> (i * 2)) & 0x03) << 2;
1395
1396 for (i = 0; i <= 2; i++)
1397 data->temp_ext[i] =
1398 (val >> ((i + 4) * 2)) & 0x0c;
1399 }
1400
1401 data->vid = lm85_read_value(client, LM85_REG_VID);
1402
1403 for (i = 0; i <= 3; ++i) {
1404 data->in[i] =
1405 lm85_read_value(client, LM85_REG_IN(i));
1406 data->fan[i] =
1407 lm85_read_value(client, LM85_REG_FAN(i));
1408 }
1409
1410 if (!((data->type == adt7463 || data->type == adt7468) &&
1411 (data->vid & 0x80))) {
1412 data->in[4] = lm85_read_value(client,
1413 LM85_REG_IN(4));
1414 }
1415
1416 if (data->type == adt7468)
1417 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
1418
1419 for (i = 0; i <= 2; ++i) {
1420 data->temp[i] =
1421 lm85_read_value(client, LM85_REG_TEMP(i));
1422 data->pwm[i] =
1423 lm85_read_value(client, LM85_REG_PWM(i));
1424
1425 if (IS_ADT7468_OFF64(data))
1426 data->temp[i] -= 64;
1427 }
1428
1429 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1430
1431 if (data->type == emc6d100) {
1432 /* Three more voltage sensors */
1433 for (i = 5; i <= 7; ++i) {
1434 data->in[i] = lm85_read_value(client,
1435 EMC6D100_REG_IN(i));
1436 }
1437 /* More alarm bits */
1438 data->alarms |= lm85_read_value(client,
1439 EMC6D100_REG_ALARM3) << 16;
1440 } else if (data->type == emc6d102) {
1441 /* Have to read LSB bits after the MSB ones because
1442 the reading of the MSB bits has frozen the
1443 LSBs (backward from the ADM1027).
1444 */
1445 int ext1 = lm85_read_value(client,
1446 EMC6D102_REG_EXTEND_ADC1);
1447 int ext2 = lm85_read_value(client,
1448 EMC6D102_REG_EXTEND_ADC2);
1449 int ext3 = lm85_read_value(client,
1450 EMC6D102_REG_EXTEND_ADC3);
1451 int ext4 = lm85_read_value(client,
1452 EMC6D102_REG_EXTEND_ADC4);
1453 data->in_ext[0] = ext3 & 0x0f;
1454 data->in_ext[1] = ext4 & 0x0f;
1455 data->in_ext[2] = ext4 >> 4;
1456 data->in_ext[3] = ext3 >> 4;
1457 data->in_ext[4] = ext2 >> 4;
1458
1459 data->temp_ext[0] = ext1 & 0x0f;
1460 data->temp_ext[1] = ext2 & 0x0f;
1461 data->temp_ext[2] = ext1 >> 4;
1462 }
1463
1464 data->last_reading = jiffies;
1465 } /* last_reading */
1466
1467 if (!data->valid ||
1468 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1469 /* Things that don't change often */
1470 dev_dbg(&client->dev, "Reading config values\n");
1471
1472 for (i = 0; i <= 3; ++i) {
1473 data->in_min[i] =
1474 lm85_read_value(client, LM85_REG_IN_MIN(i));
1475 data->in_max[i] =
1476 lm85_read_value(client, LM85_REG_IN_MAX(i));
1477 data->fan_min[i] =
1478 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1479 }
1480
1481 if (!((data->type == adt7463 || data->type == adt7468) &&
1482 (data->vid & 0x80))) {
1483 data->in_min[4] = lm85_read_value(client,
1484 LM85_REG_IN_MIN(4));
1485 data->in_max[4] = lm85_read_value(client,
1486 LM85_REG_IN_MAX(4));
1487 }
1488
1489 if (data->type == emc6d100) {
1490 for (i = 5; i <= 7; ++i) {
1491 data->in_min[i] = lm85_read_value(client,
1492 EMC6D100_REG_IN_MIN(i));
1493 data->in_max[i] = lm85_read_value(client,
1494 EMC6D100_REG_IN_MAX(i));
1495 }
1496 }
1497
1498 for (i = 0; i <= 2; ++i) {
1499 int val;
1500
1501 data->temp_min[i] =
1502 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1503 data->temp_max[i] =
1504 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1505
1506 data->autofan[i].config =
1507 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1508 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1509 data->pwm_freq[i] = val & 0x07;
1510 data->zone[i].range = val >> 4;
1511 data->autofan[i].min_pwm =
1512 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1513 data->zone[i].limit =
1514 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1515 data->zone[i].critical =
1516 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1517
1518 if (IS_ADT7468_OFF64(data)) {
1519 data->temp_min[i] -= 64;
1520 data->temp_max[i] -= 64;
1521 data->zone[i].limit -= 64;
1522 data->zone[i].critical -= 64;
1523 }
1524 }
1525
1526 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1527 data->autofan[0].min_off = (i & 0x20) != 0;
1528 data->autofan[1].min_off = (i & 0x40) != 0;
1529 data->autofan[2].min_off = (i & 0x80) != 0;
1530
1531 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1532 data->zone[0].hyst = i >> 4;
1533 data->zone[1].hyst = i & 0x0f;
1534
1535 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1536 data->zone[2].hyst = i >> 4;
1537
1538 data->last_config = jiffies;
1539 } /* last_config */
1540
1541 data->valid = 1;
1542
1543 mutex_unlock(&data->update_lock);
1544
1545 return data;
1546 }
1547
1548
1549 static int __init sm_lm85_init(void)
1550 {
1551 return i2c_add_driver(&lm85_driver);
1552 }
1553
1554 static void __exit sm_lm85_exit(void)
1555 {
1556 i2c_del_driver(&lm85_driver);
1557 }
1558
1559 MODULE_LICENSE("GPL");
1560 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1561 "Margit Schubert-While <margitsw@t-online.de>, "
1562 "Justin Thiessen <jthiessen@penguincomputing.com>");
1563 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1564
1565 module_init(sm_lm85_init);
1566 module_exit(sm_lm85_exit);
Support for the Chinese Samsung S3C2440 based development boards