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omap iommu: Make CONFIG_OMAP_IOMMU_DEBUG selectable
[linux-2.6.git] / drivers / hwmon / lm85.c
blobb3841a615595658cc3ddd0675d827becaf53fc45
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--2009 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 enum chips {
42 any_chip, lm85b, lm85c,
43 adm1027, adt7463, adt7468,
44 emc6d100, emc6d102
45 };
46
47 /* The LM85 registers */
48
49 #define LM85_REG_IN(nr) (0x20 + (nr))
50 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
51 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
52
53 #define LM85_REG_TEMP(nr) (0x25 + (nr))
54 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
55 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
56
57 /* Fan speeds are LSB, MSB (2 bytes) */
58 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
59 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
60
61 #define LM85_REG_PWM(nr) (0x30 + (nr))
62
63 #define LM85_REG_COMPANY 0x3e
64 #define LM85_REG_VERSTEP 0x3f
65
66 #define ADT7468_REG_CFG5 0x7c
67 #define ADT7468_OFF64 0x01
68 #define IS_ADT7468_OFF64(data) \
69 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
70
71 /* These are the recognized values for the above regs */
72 #define LM85_COMPANY_NATIONAL 0x01
73 #define LM85_COMPANY_ANALOG_DEV 0x41
74 #define LM85_COMPANY_SMSC 0x5c
75 #define LM85_VERSTEP_VMASK 0xf0
76 #define LM85_VERSTEP_GENERIC 0x60
77 #define LM85_VERSTEP_GENERIC2 0x70
78 #define LM85_VERSTEP_LM85C 0x60
79 #define LM85_VERSTEP_LM85B 0x62
80 #define LM85_VERSTEP_LM96000_1 0x68
81 #define LM85_VERSTEP_LM96000_2 0x69
82 #define LM85_VERSTEP_ADM1027 0x60
83 #define LM85_VERSTEP_ADT7463 0x62
84 #define LM85_VERSTEP_ADT7463C 0x6A
85 #define LM85_VERSTEP_ADT7468_1 0x71
86 #define LM85_VERSTEP_ADT7468_2 0x72
87 #define LM85_VERSTEP_EMC6D100_A0 0x60
88 #define LM85_VERSTEP_EMC6D100_A1 0x61
89 #define LM85_VERSTEP_EMC6D102 0x65
90
91 #define LM85_REG_CONFIG 0x40
92
93 #define LM85_REG_ALARM1 0x41
94 #define LM85_REG_ALARM2 0x42
95
96 #define LM85_REG_VID 0x43
97
98 /* Automated FAN control */
99 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
100 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
101 #define LM85_REG_AFAN_SPIKE1 0x62
102 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
103 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
104 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
105 #define LM85_REG_AFAN_HYST1 0x6d
106 #define LM85_REG_AFAN_HYST2 0x6e
107
108 #define ADM1027_REG_EXTEND_ADC1 0x76
109 #define ADM1027_REG_EXTEND_ADC2 0x77
110
111 #define EMC6D100_REG_ALARM3 0x7d
112 /* IN5, IN6 and IN7 */
113 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
114 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
115 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
116 #define EMC6D102_REG_EXTEND_ADC1 0x85
117 #define EMC6D102_REG_EXTEND_ADC2 0x86
118 #define EMC6D102_REG_EXTEND_ADC3 0x87
119 #define EMC6D102_REG_EXTEND_ADC4 0x88
120
121
122 /* Conversions. Rounding and limit checking is only done on the TO_REG
123 variants. Note that you should be a bit careful with which arguments
124 these macros are called: arguments may be evaluated more than once.
125 */
126
127 /* IN are scaled acording to built-in resistors */
128 static const int lm85_scaling[] = { /* .001 Volts */
129 2500, 2250, 3300, 5000, 12000,
130 3300, 1500, 1800 /*EMC6D100*/
131 };
132 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
133
134 #define INS_TO_REG(n, val) \
135 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
136
137 #define INSEXT_FROM_REG(n, val, ext) \
138 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
139
140 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
141
142 /* FAN speed is measured using 90kHz clock */
143 static inline u16 FAN_TO_REG(unsigned long val)
144 {
145 if (!val)
146 return 0xffff;
147 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
148 }
149 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
150 5400000 / (val))
151
152 /* Temperature is reported in .001 degC increments */
153 #define TEMP_TO_REG(val) \
154 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
155 #define TEMPEXT_FROM_REG(val, ext) \
156 SCALE(((val) << 4) + (ext), 16, 1000)
157 #define TEMP_FROM_REG(val) ((val) * 1000)
158
159 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
160 #define PWM_FROM_REG(val) (val)
161
162
163 /* ZONEs have the following parameters:
164 * Limit (low) temp, 1. degC
165 * Hysteresis (below limit), 1. degC (0-15)
166 * Range of speed control, .1 degC (2-80)
167 * Critical (high) temp, 1. degC
168 *
169 * FAN PWMs have the following parameters:
170 * Reference Zone, 1, 2, 3, etc.
171 * Spinup time, .05 sec
172 * PWM value at limit/low temp, 1 count
173 * PWM Frequency, 1. Hz
174 * PWM is Min or OFF below limit, flag
175 * Invert PWM output, flag
176 *
177 * Some chips filter the temp, others the fan.
178 * Filter constant (or disabled) .1 seconds
179 */
180
181 /* These are the zone temperature range encodings in .001 degree C */
182 static const int lm85_range_map[] = {
183 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
184 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
185 };
186
187 static int RANGE_TO_REG(int range)
188 {
189 int i;
190
191 /* Find the closest match */
192 for (i = 0; i < 15; ++i) {
193 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
194 break;
195 }
196
197 return i;
198 }
199 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
200
201 /* These are the PWM frequency encodings */
202 static const int lm85_freq_map[8] = { /* 1 Hz */
203 10, 15, 23, 30, 38, 47, 61, 94
204 };
205 static const int adm1027_freq_map[8] = { /* 1 Hz */
206 11, 15, 22, 29, 35, 44, 59, 88
207 };
208
209 static int FREQ_TO_REG(const int *map, int freq)
210 {
211 int i;
212
213 /* Find the closest match */
214 for (i = 0; i < 7; ++i)
215 if (freq <= (map[i] + map[i + 1]) / 2)
216 break;
217 return i;
218 }
219
220 static int FREQ_FROM_REG(const int *map, u8 reg)
221 {
222 return map[reg & 0x07];
223 }
224
225 /* Since we can't use strings, I'm abusing these numbers
226 * to stand in for the following meanings:
227 * 1 -- PWM responds to Zone 1
228 * 2 -- PWM responds to Zone 2
229 * 3 -- PWM responds to Zone 3
230 * 23 -- PWM responds to the higher temp of Zone 2 or 3
231 * 123 -- PWM responds to highest of Zone 1, 2, or 3
232 * 0 -- PWM is always at 0% (ie, off)
233 * -1 -- PWM is always at 100%
234 * -2 -- PWM responds to manual control
235 */
236
237 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
238 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
239
240 static int ZONE_TO_REG(int zone)
241 {
242 int i;
243
244 for (i = 0; i <= 7; ++i)
245 if (zone == lm85_zone_map[i])
246 break;
247 if (i > 7) /* Not found. */
248 i = 3; /* Always 100% */
249 return i << 5;
250 }
251
252 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
253 #define HYST_FROM_REG(val) ((val) * 1000)
254
255 /* Chip sampling rates
256 *
257 * Some sensors are not updated more frequently than once per second
258 * so it doesn't make sense to read them more often than that.
259 * We cache the results and return the saved data if the driver
260 * is called again before a second has elapsed.
261 *
262 * Also, there is significant configuration data for this chip
263 * given the automatic PWM fan control that is possible. There
264 * are about 47 bytes of config data to only 22 bytes of actual
265 * readings. So, we keep the config data up to date in the cache
266 * when it is written and only sample it once every 1 *minute*
267 */
268 #define LM85_DATA_INTERVAL (HZ + HZ / 2)
269 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
270
271 /* LM85 can automatically adjust fan speeds based on temperature
272 * This structure encapsulates an entire Zone config. There are
273 * three zones (one for each temperature input) on the lm85
274 */
275 struct lm85_zone {
276 s8 limit; /* Low temp limit */
277 u8 hyst; /* Low limit hysteresis. (0-15) */
278 u8 range; /* Temp range, encoded */
279 s8 critical; /* "All fans ON" temp limit */
280 u8 off_desired; /* Actual "off" temperature specified. Preserved
281 * to prevent "drift" as other autofan control
282 * values change.
283 */
284 u8 max_desired; /* Actual "max" temperature specified. Preserved
285 * to prevent "drift" as other autofan control
286 * values change.
287 */
288 };
289
290 struct lm85_autofan {
291 u8 config; /* Register value */
292 u8 min_pwm; /* Minimum PWM value, encoded */
293 u8 min_off; /* Min PWM or OFF below "limit", flag */
294 };
295
296 /* For each registered chip, we need to keep some data in memory.
297 The structure is dynamically allocated. */
298 struct lm85_data {
299 struct device *hwmon_dev;
300 const int *freq_map;
301 enum chips type;
302
303 struct mutex update_lock;
304 int valid; /* !=0 if following fields are valid */
305 unsigned long last_reading; /* In jiffies */
306 unsigned long last_config; /* In jiffies */
307
308 u8 in[8]; /* Register value */
309 u8 in_max[8]; /* Register value */
310 u8 in_min[8]; /* Register value */
311 s8 temp[3]; /* Register value */
312 s8 temp_min[3]; /* Register value */
313 s8 temp_max[3]; /* Register value */
314 u16 fan[4]; /* Register value */
315 u16 fan_min[4]; /* Register value */
316 u8 pwm[3]; /* Register value */
317 u8 pwm_freq[3]; /* Register encoding */
318 u8 temp_ext[3]; /* Decoded values */
319 u8 in_ext[8]; /* Decoded values */
320 u8 vid; /* Register value */
321 u8 vrm; /* VRM version */
322 u32 alarms; /* Register encoding, combined */
323 u8 cfg5; /* Config Register 5 on ADT7468 */
324 struct lm85_autofan autofan[3];
325 struct lm85_zone zone[3];
326 };
327
328 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info);
329 static int lm85_probe(struct i2c_client *client,
330 const struct i2c_device_id *id);
331 static int lm85_remove(struct i2c_client *client);
332
333 static int lm85_read_value(struct i2c_client *client, u8 reg);
334 static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
335 static struct lm85_data *lm85_update_device(struct device *dev);
336
337
338 static const struct i2c_device_id lm85_id[] = {
339 { "adm1027", adm1027 },
340 { "adt7463", adt7463 },
341 { "adt7468", adt7468 },
342 { "lm85", any_chip },
343 { "lm85b", lm85b },
344 { "lm85c", lm85c },
345 { "emc6d100", emc6d100 },
346 { "emc6d101", emc6d100 },
347 { "emc6d102", emc6d102 },
348 { }
349 };
350 MODULE_DEVICE_TABLE(i2c, lm85_id);
351
352 static struct i2c_driver lm85_driver = {
353 .class = I2C_CLASS_HWMON,
354 .driver = {
355 .name = "lm85",
356 },
357 .probe = lm85_probe,
358 .remove = lm85_remove,
359 .id_table = lm85_id,
360 .detect = lm85_detect,
361 .address_list = normal_i2c,
362 };
363
364
365 /* 4 Fans */
366 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
367 char *buf)
368 {
369 int nr = to_sensor_dev_attr(attr)->index;
370 struct lm85_data *data = lm85_update_device(dev);
371 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
372 }
373
374 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
375 char *buf)
376 {
377 int nr = to_sensor_dev_attr(attr)->index;
378 struct lm85_data *data = lm85_update_device(dev);
379 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
380 }
381
382 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
383 const char *buf, size_t count)
384 {
385 int nr = to_sensor_dev_attr(attr)->index;
386 struct i2c_client *client = to_i2c_client(dev);
387 struct lm85_data *data = i2c_get_clientdata(client);
388 unsigned long val = simple_strtoul(buf, NULL, 10);
389
390 mutex_lock(&data->update_lock);
391 data->fan_min[nr] = FAN_TO_REG(val);
392 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
393 mutex_unlock(&data->update_lock);
394 return count;
395 }
396
397 #define show_fan_offset(offset) \
398 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
399 show_fan, NULL, offset - 1); \
400 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
401 show_fan_min, set_fan_min, offset - 1)
402
403 show_fan_offset(1);
404 show_fan_offset(2);
405 show_fan_offset(3);
406 show_fan_offset(4);
407
408 /* vid, vrm, alarms */
409
410 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
411 char *buf)
412 {
413 struct lm85_data *data = lm85_update_device(dev);
414 int vid;
415
416 if ((data->type == adt7463 || data->type == adt7468) &&
417 (data->vid & 0x80)) {
418 /* 6-pin VID (VRM 10) */
419 vid = vid_from_reg(data->vid & 0x3f, data->vrm);
420 } else {
421 /* 5-pin VID (VRM 9) */
422 vid = vid_from_reg(data->vid & 0x1f, data->vrm);
423 }
424
425 return sprintf(buf, "%d\n", vid);
426 }
427
428 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
429
430 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
431 char *buf)
432 {
433 struct lm85_data *data = dev_get_drvdata(dev);
434 return sprintf(buf, "%ld\n", (long) data->vrm);
435 }
436
437 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
438 const char *buf, size_t count)
439 {
440 struct lm85_data *data = dev_get_drvdata(dev);
441 data->vrm = simple_strtoul(buf, NULL, 10);
442 return count;
443 }
444
445 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
446
447 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
448 *attr, char *buf)
449 {
450 struct lm85_data *data = lm85_update_device(dev);
451 return sprintf(buf, "%u\n", data->alarms);
452 }
453
454 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
455
456 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
457 char *buf)
458 {
459 int nr = to_sensor_dev_attr(attr)->index;
460 struct lm85_data *data = lm85_update_device(dev);
461 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
462 }
463
464 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
465 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
466 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
467 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
468 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
469 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
470 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
471 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
472 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
473 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
474 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
475 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
476 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
477 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
478 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
479 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
480 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
481
482 /* pwm */
483
484 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
485 char *buf)
486 {
487 int nr = to_sensor_dev_attr(attr)->index;
488 struct lm85_data *data = lm85_update_device(dev);
489 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
490 }
491
492 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
493 const char *buf, size_t count)
494 {
495 int nr = to_sensor_dev_attr(attr)->index;
496 struct i2c_client *client = to_i2c_client(dev);
497 struct lm85_data *data = i2c_get_clientdata(client);
498 long val = simple_strtol(buf, NULL, 10);
499
500 mutex_lock(&data->update_lock);
501 data->pwm[nr] = PWM_TO_REG(val);
502 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
503 mutex_unlock(&data->update_lock);
504 return count;
505 }
506
507 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
508 *attr, char *buf)
509 {
510 int nr = to_sensor_dev_attr(attr)->index;
511 struct lm85_data *data = lm85_update_device(dev);
512 int pwm_zone, enable;
513
514 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
515 switch (pwm_zone) {
516 case -1: /* PWM is always at 100% */
517 enable = 0;
518 break;
519 case 0: /* PWM is always at 0% */
520 case -2: /* PWM responds to manual control */
521 enable = 1;
522 break;
523 default: /* PWM in automatic mode */
524 enable = 2;
525 }
526 return sprintf(buf, "%d\n", enable);
527 }
528
529 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
530 *attr, const char *buf, size_t count)
531 {
532 int nr = to_sensor_dev_attr(attr)->index;
533 struct i2c_client *client = to_i2c_client(dev);
534 struct lm85_data *data = i2c_get_clientdata(client);
535 long val = simple_strtol(buf, NULL, 10);
536 u8 config;
537
538 switch (val) {
539 case 0:
540 config = 3;
541 break;
542 case 1:
543 config = 7;
544 break;
545 case 2:
546 /* Here we have to choose arbitrarily one of the 5 possible
547 configurations; I go for the safest */
548 config = 6;
549 break;
550 default:
551 return -EINVAL;
552 }
553
554 mutex_lock(&data->update_lock);
555 data->autofan[nr].config = lm85_read_value(client,
556 LM85_REG_AFAN_CONFIG(nr));
557 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
558 | (config << 5);
559 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
560 data->autofan[nr].config);
561 mutex_unlock(&data->update_lock);
562 return count;
563 }
564
565 static ssize_t show_pwm_freq(struct device *dev,
566 struct device_attribute *attr, char *buf)
567 {
568 int nr = to_sensor_dev_attr(attr)->index;
569 struct lm85_data *data = lm85_update_device(dev);
570 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->freq_map,
571 data->pwm_freq[nr]));
572 }
573
574 static ssize_t set_pwm_freq(struct device *dev,
575 struct device_attribute *attr, const char *buf, size_t count)
576 {
577 int nr = to_sensor_dev_attr(attr)->index;
578 struct i2c_client *client = to_i2c_client(dev);
579 struct lm85_data *data = i2c_get_clientdata(client);
580 long val = simple_strtol(buf, NULL, 10);
581
582 mutex_lock(&data->update_lock);
583 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
584 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
585 (data->zone[nr].range << 4)
586 | data->pwm_freq[nr]);
587 mutex_unlock(&data->update_lock);
588 return count;
589 }
590
591 #define show_pwm_reg(offset) \
592 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
593 show_pwm, set_pwm, offset - 1); \
594 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
595 show_pwm_enable, set_pwm_enable, offset - 1); \
596 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
597 show_pwm_freq, set_pwm_freq, offset - 1)
598
599 show_pwm_reg(1);
600 show_pwm_reg(2);
601 show_pwm_reg(3);
602
603 /* Voltages */
604
605 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
606 char *buf)
607 {
608 int nr = to_sensor_dev_attr(attr)->index;
609 struct lm85_data *data = lm85_update_device(dev);
610 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
611 data->in_ext[nr]));
612 }
613
614 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
615 char *buf)
616 {
617 int nr = to_sensor_dev_attr(attr)->index;
618 struct lm85_data *data = lm85_update_device(dev);
619 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
620 }
621
622 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
623 const char *buf, size_t count)
624 {
625 int nr = to_sensor_dev_attr(attr)->index;
626 struct i2c_client *client = to_i2c_client(dev);
627 struct lm85_data *data = i2c_get_clientdata(client);
628 long val = simple_strtol(buf, NULL, 10);
629
630 mutex_lock(&data->update_lock);
631 data->in_min[nr] = INS_TO_REG(nr, val);
632 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
633 mutex_unlock(&data->update_lock);
634 return count;
635 }
636
637 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
638 char *buf)
639 {
640 int nr = to_sensor_dev_attr(attr)->index;
641 struct lm85_data *data = lm85_update_device(dev);
642 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
643 }
644
645 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
646 const char *buf, size_t count)
647 {
648 int nr = to_sensor_dev_attr(attr)->index;
649 struct i2c_client *client = to_i2c_client(dev);
650 struct lm85_data *data = i2c_get_clientdata(client);
651 long val = simple_strtol(buf, NULL, 10);
652
653 mutex_lock(&data->update_lock);
654 data->in_max[nr] = INS_TO_REG(nr, val);
655 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
656 mutex_unlock(&data->update_lock);
657 return count;
658 }
659
660 #define show_in_reg(offset) \
661 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
662 show_in, NULL, offset); \
663 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
664 show_in_min, set_in_min, offset); \
665 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
666 show_in_max, set_in_max, offset)
667
668 show_in_reg(0);
669 show_in_reg(1);
670 show_in_reg(2);
671 show_in_reg(3);
672 show_in_reg(4);
673 show_in_reg(5);
674 show_in_reg(6);
675 show_in_reg(7);
676
677 /* Temps */
678
679 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
680 char *buf)
681 {
682 int nr = to_sensor_dev_attr(attr)->index;
683 struct lm85_data *data = lm85_update_device(dev);
684 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
685 data->temp_ext[nr]));
686 }
687
688 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
689 char *buf)
690 {
691 int nr = to_sensor_dev_attr(attr)->index;
692 struct lm85_data *data = lm85_update_device(dev);
693 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
694 }
695
696 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
697 const char *buf, size_t count)
698 {
699 int nr = to_sensor_dev_attr(attr)->index;
700 struct i2c_client *client = to_i2c_client(dev);
701 struct lm85_data *data = i2c_get_clientdata(client);
702 long val = simple_strtol(buf, NULL, 10);
703
704 if (IS_ADT7468_OFF64(data))
705 val += 64;
706
707 mutex_lock(&data->update_lock);
708 data->temp_min[nr] = TEMP_TO_REG(val);
709 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
710 mutex_unlock(&data->update_lock);
711 return count;
712 }
713
714 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
715 char *buf)
716 {
717 int nr = to_sensor_dev_attr(attr)->index;
718 struct lm85_data *data = lm85_update_device(dev);
719 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
720 }
721
722 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
723 const char *buf, size_t count)
724 {
725 int nr = to_sensor_dev_attr(attr)->index;
726 struct i2c_client *client = to_i2c_client(dev);
727 struct lm85_data *data = i2c_get_clientdata(client);
728 long val = simple_strtol(buf, NULL, 10);
729
730 if (IS_ADT7468_OFF64(data))
731 val += 64;
732
733 mutex_lock(&data->update_lock);
734 data->temp_max[nr] = TEMP_TO_REG(val);
735 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
736 mutex_unlock(&data->update_lock);
737 return count;
738 }
739
740 #define show_temp_reg(offset) \
741 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
742 show_temp, NULL, offset - 1); \
743 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
744 show_temp_min, set_temp_min, offset - 1); \
745 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
746 show_temp_max, set_temp_max, offset - 1);
747
748 show_temp_reg(1);
749 show_temp_reg(2);
750 show_temp_reg(3);
751
752
753 /* Automatic PWM control */
754
755 static ssize_t show_pwm_auto_channels(struct device *dev,
756 struct device_attribute *attr, char *buf)
757 {
758 int nr = to_sensor_dev_attr(attr)->index;
759 struct lm85_data *data = lm85_update_device(dev);
760 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
761 }
762
763 static ssize_t set_pwm_auto_channels(struct device *dev,
764 struct device_attribute *attr, const char *buf, size_t count)
765 {
766 int nr = to_sensor_dev_attr(attr)->index;
767 struct i2c_client *client = to_i2c_client(dev);
768 struct lm85_data *data = i2c_get_clientdata(client);
769 long val = simple_strtol(buf, NULL, 10);
770
771 mutex_lock(&data->update_lock);
772 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
773 | ZONE_TO_REG(val);
774 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
775 data->autofan[nr].config);
776 mutex_unlock(&data->update_lock);
777 return count;
778 }
779
780 static ssize_t show_pwm_auto_pwm_min(struct device *dev,
781 struct device_attribute *attr, char *buf)
782 {
783 int nr = to_sensor_dev_attr(attr)->index;
784 struct lm85_data *data = lm85_update_device(dev);
785 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
786 }
787
788 static ssize_t set_pwm_auto_pwm_min(struct device *dev,
789 struct device_attribute *attr, const char *buf, size_t count)
790 {
791 int nr = to_sensor_dev_attr(attr)->index;
792 struct i2c_client *client = to_i2c_client(dev);
793 struct lm85_data *data = i2c_get_clientdata(client);
794 long val = simple_strtol(buf, NULL, 10);
795
796 mutex_lock(&data->update_lock);
797 data->autofan[nr].min_pwm = PWM_TO_REG(val);
798 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
799 data->autofan[nr].min_pwm);
800 mutex_unlock(&data->update_lock);
801 return count;
802 }
803
804 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
805 struct device_attribute *attr, char *buf)
806 {
807 int nr = to_sensor_dev_attr(attr)->index;
808 struct lm85_data *data = lm85_update_device(dev);
809 return sprintf(buf, "%d\n", data->autofan[nr].min_off);
810 }
811
812 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
813 struct device_attribute *attr, const char *buf, size_t count)
814 {
815 int nr = to_sensor_dev_attr(attr)->index;
816 struct i2c_client *client = to_i2c_client(dev);
817 struct lm85_data *data = i2c_get_clientdata(client);
818 long val = simple_strtol(buf, NULL, 10);
819 u8 tmp;
820
821 mutex_lock(&data->update_lock);
822 data->autofan[nr].min_off = val;
823 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
824 tmp &= ~(0x20 << nr);
825 if (data->autofan[nr].min_off)
826 tmp |= 0x20 << nr;
827 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
828 mutex_unlock(&data->update_lock);
829 return count;
830 }
831
832 #define pwm_auto(offset) \
833 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
834 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
835 set_pwm_auto_channels, offset - 1); \
836 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
837 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
838 set_pwm_auto_pwm_min, offset - 1); \
839 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
840 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
841 set_pwm_auto_pwm_minctl, offset - 1)
842
843 pwm_auto(1);
844 pwm_auto(2);
845 pwm_auto(3);
846
847 /* Temperature settings for automatic PWM control */
848
849 static ssize_t show_temp_auto_temp_off(struct device *dev,
850 struct device_attribute *attr, char *buf)
851 {
852 int nr = to_sensor_dev_attr(attr)->index;
853 struct lm85_data *data = lm85_update_device(dev);
854 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
855 HYST_FROM_REG(data->zone[nr].hyst));
856 }
857
858 static ssize_t set_temp_auto_temp_off(struct device *dev,
859 struct device_attribute *attr, const char *buf, size_t count)
860 {
861 int nr = to_sensor_dev_attr(attr)->index;
862 struct i2c_client *client = to_i2c_client(dev);
863 struct lm85_data *data = i2c_get_clientdata(client);
864 int min;
865 long val = simple_strtol(buf, NULL, 10);
866
867 mutex_lock(&data->update_lock);
868 min = TEMP_FROM_REG(data->zone[nr].limit);
869 data->zone[nr].off_desired = TEMP_TO_REG(val);
870 data->zone[nr].hyst = HYST_TO_REG(min - val);
871 if (nr == 0 || nr == 1) {
872 lm85_write_value(client, LM85_REG_AFAN_HYST1,
873 (data->zone[0].hyst << 4)
874 | data->zone[1].hyst);
875 } else {
876 lm85_write_value(client, LM85_REG_AFAN_HYST2,
877 (data->zone[2].hyst << 4));
878 }
879 mutex_unlock(&data->update_lock);
880 return count;
881 }
882
883 static ssize_t show_temp_auto_temp_min(struct device *dev,
884 struct device_attribute *attr, char *buf)
885 {
886 int nr = to_sensor_dev_attr(attr)->index;
887 struct lm85_data *data = lm85_update_device(dev);
888 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
889 }
890
891 static ssize_t set_temp_auto_temp_min(struct device *dev,
892 struct device_attribute *attr, const char *buf, size_t count)
893 {
894 int nr = to_sensor_dev_attr(attr)->index;
895 struct i2c_client *client = to_i2c_client(dev);
896 struct lm85_data *data = i2c_get_clientdata(client);
897 long val = simple_strtol(buf, NULL, 10);
898
899 mutex_lock(&data->update_lock);
900 data->zone[nr].limit = TEMP_TO_REG(val);
901 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
902 data->zone[nr].limit);
903
904 /* Update temp_auto_max and temp_auto_range */
905 data->zone[nr].range = RANGE_TO_REG(
906 TEMP_FROM_REG(data->zone[nr].max_desired) -
907 TEMP_FROM_REG(data->zone[nr].limit));
908 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
909 ((data->zone[nr].range & 0x0f) << 4)
910 | (data->pwm_freq[nr] & 0x07));
911
912 /* Update temp_auto_hyst and temp_auto_off */
913 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
914 data->zone[nr].limit) - TEMP_FROM_REG(
915 data->zone[nr].off_desired));
916 if (nr == 0 || nr == 1) {
917 lm85_write_value(client, LM85_REG_AFAN_HYST1,
918 (data->zone[0].hyst << 4)
919 | data->zone[1].hyst);
920 } else {
921 lm85_write_value(client, LM85_REG_AFAN_HYST2,
922 (data->zone[2].hyst << 4));
923 }
924 mutex_unlock(&data->update_lock);
925 return count;
926 }
927
928 static ssize_t show_temp_auto_temp_max(struct device *dev,
929 struct device_attribute *attr, char *buf)
930 {
931 int nr = to_sensor_dev_attr(attr)->index;
932 struct lm85_data *data = lm85_update_device(dev);
933 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
934 RANGE_FROM_REG(data->zone[nr].range));
935 }
936
937 static ssize_t set_temp_auto_temp_max(struct device *dev,
938 struct device_attribute *attr, const char *buf, size_t count)
939 {
940 int nr = to_sensor_dev_attr(attr)->index;
941 struct i2c_client *client = to_i2c_client(dev);
942 struct lm85_data *data = i2c_get_clientdata(client);
943 int min;
944 long val = simple_strtol(buf, NULL, 10);
945
946 mutex_lock(&data->update_lock);
947 min = TEMP_FROM_REG(data->zone[nr].limit);
948 data->zone[nr].max_desired = TEMP_TO_REG(val);
949 data->zone[nr].range = RANGE_TO_REG(
950 val - min);
951 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
952 ((data->zone[nr].range & 0x0f) << 4)
953 | (data->pwm_freq[nr] & 0x07));
954 mutex_unlock(&data->update_lock);
955 return count;
956 }
957
958 static ssize_t show_temp_auto_temp_crit(struct device *dev,
959 struct device_attribute *attr, char *buf)
960 {
961 int nr = to_sensor_dev_attr(attr)->index;
962 struct lm85_data *data = lm85_update_device(dev);
963 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
964 }
965
966 static ssize_t set_temp_auto_temp_crit(struct device *dev,
967 struct device_attribute *attr, const char *buf, size_t count)
968 {
969 int nr = to_sensor_dev_attr(attr)->index;
970 struct i2c_client *client = to_i2c_client(dev);
971 struct lm85_data *data = i2c_get_clientdata(client);
972 long val = simple_strtol(buf, NULL, 10);
973
974 mutex_lock(&data->update_lock);
975 data->zone[nr].critical = TEMP_TO_REG(val);
976 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
977 data->zone[nr].critical);
978 mutex_unlock(&data->update_lock);
979 return count;
980 }
981
982 #define temp_auto(offset) \
983 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
984 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
985 set_temp_auto_temp_off, offset - 1); \
986 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
987 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
988 set_temp_auto_temp_min, offset - 1); \
989 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
990 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
991 set_temp_auto_temp_max, offset - 1); \
992 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
993 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
994 set_temp_auto_temp_crit, offset - 1);
995
996 temp_auto(1);
997 temp_auto(2);
998 temp_auto(3);
999
1000 static struct attribute *lm85_attributes[] = {
1001 &sensor_dev_attr_fan1_input.dev_attr.attr,
1002 &sensor_dev_attr_fan2_input.dev_attr.attr,
1003 &sensor_dev_attr_fan3_input.dev_attr.attr,
1004 &sensor_dev_attr_fan4_input.dev_attr.attr,
1005 &sensor_dev_attr_fan1_min.dev_attr.attr,
1006 &sensor_dev_attr_fan2_min.dev_attr.attr,
1007 &sensor_dev_attr_fan3_min.dev_attr.attr,
1008 &sensor_dev_attr_fan4_min.dev_attr.attr,
1009 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1010 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1011 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1012 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1013
1014 &sensor_dev_attr_pwm1.dev_attr.attr,
1015 &sensor_dev_attr_pwm2.dev_attr.attr,
1016 &sensor_dev_attr_pwm3.dev_attr.attr,
1017 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1018 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1019 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1020 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1021 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1022 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1023
1024 &sensor_dev_attr_in0_input.dev_attr.attr,
1025 &sensor_dev_attr_in1_input.dev_attr.attr,
1026 &sensor_dev_attr_in2_input.dev_attr.attr,
1027 &sensor_dev_attr_in3_input.dev_attr.attr,
1028 &sensor_dev_attr_in0_min.dev_attr.attr,
1029 &sensor_dev_attr_in1_min.dev_attr.attr,
1030 &sensor_dev_attr_in2_min.dev_attr.attr,
1031 &sensor_dev_attr_in3_min.dev_attr.attr,
1032 &sensor_dev_attr_in0_max.dev_attr.attr,
1033 &sensor_dev_attr_in1_max.dev_attr.attr,
1034 &sensor_dev_attr_in2_max.dev_attr.attr,
1035 &sensor_dev_attr_in3_max.dev_attr.attr,
1036 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1037 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1038 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1039 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1040
1041 &sensor_dev_attr_temp1_input.dev_attr.attr,
1042 &sensor_dev_attr_temp2_input.dev_attr.attr,
1043 &sensor_dev_attr_temp3_input.dev_attr.attr,
1044 &sensor_dev_attr_temp1_min.dev_attr.attr,
1045 &sensor_dev_attr_temp2_min.dev_attr.attr,
1046 &sensor_dev_attr_temp3_min.dev_attr.attr,
1047 &sensor_dev_attr_temp1_max.dev_attr.attr,
1048 &sensor_dev_attr_temp2_max.dev_attr.attr,
1049 &sensor_dev_attr_temp3_max.dev_attr.attr,
1050 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1051 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1052 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1053 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1054 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1055
1056 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1057 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1058 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1059 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1060 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1061 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1062 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1063 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1064 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1065
1066 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1067 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1068 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1069 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1070 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1071 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1072 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1073 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1074 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1075 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1076 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1077 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1078
1079 &dev_attr_vrm.attr,
1080 &dev_attr_cpu0_vid.attr,
1081 &dev_attr_alarms.attr,
1082 NULL
1083 };
1084
1085 static const struct attribute_group lm85_group = {
1086 .attrs = lm85_attributes,
1087 };
1088
1089 static struct attribute *lm85_attributes_in4[] = {
1090 &sensor_dev_attr_in4_input.dev_attr.attr,
1091 &sensor_dev_attr_in4_min.dev_attr.attr,
1092 &sensor_dev_attr_in4_max.dev_attr.attr,
1093 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1094 NULL
1095 };
1096
1097 static const struct attribute_group lm85_group_in4 = {
1098 .attrs = lm85_attributes_in4,
1099 };
1100
1101 static struct attribute *lm85_attributes_in567[] = {
1102 &sensor_dev_attr_in5_input.dev_attr.attr,
1103 &sensor_dev_attr_in6_input.dev_attr.attr,
1104 &sensor_dev_attr_in7_input.dev_attr.attr,
1105 &sensor_dev_attr_in5_min.dev_attr.attr,
1106 &sensor_dev_attr_in6_min.dev_attr.attr,
1107 &sensor_dev_attr_in7_min.dev_attr.attr,
1108 &sensor_dev_attr_in5_max.dev_attr.attr,
1109 &sensor_dev_attr_in6_max.dev_attr.attr,
1110 &sensor_dev_attr_in7_max.dev_attr.attr,
1111 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1112 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1113 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1114 NULL
1115 };
1116
1117 static const struct attribute_group lm85_group_in567 = {
1118 .attrs = lm85_attributes_in567,
1119 };
1120
1121 static void lm85_init_client(struct i2c_client *client)
1122 {
1123 int value;
1124
1125 /* Start monitoring if needed */
1126 value = lm85_read_value(client, LM85_REG_CONFIG);
1127 if (!(value & 0x01)) {
1128 dev_info(&client->dev, "Starting monitoring\n");
1129 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1130 }
1131
1132 /* Warn about unusual configuration bits */
1133 if (value & 0x02)
1134 dev_warn(&client->dev, "Device configuration is locked\n");
1135 if (!(value & 0x04))
1136 dev_warn(&client->dev, "Device is not ready\n");
1137 }
1138
1139 static int lm85_is_fake(struct i2c_client *client)
1140 {
1141 /*
1142 * Differenciate between real LM96000 and Winbond WPCD377I. The latter
1143 * emulate the former except that it has no hardware monitoring function
1144 * so the readings are always 0.
1145 */
1146 int i;
1147 u8 in_temp, fan;
1148
1149 for (i = 0; i < 8; i++) {
1150 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1151 fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1152 if (in_temp != 0x00 || fan != 0xff)
1153 return 0;
1154 }
1155
1156 return 1;
1157 }
1158
1159 /* Return 0 if detection is successful, -ENODEV otherwise */
1160 static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
1161 {
1162 struct i2c_adapter *adapter = client->adapter;
1163 int address = client->addr;
1164 const char *type_name;
1165 int company, verstep;
1166
1167 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1168 /* We need to be able to do byte I/O */
1169 return -ENODEV;
1170 }
1171
1172 /* Determine the chip type */
1173 company = lm85_read_value(client, LM85_REG_COMPANY);
1174 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,
1184 "Autodetection failed: unsupported version\n");
1185 return -ENODEV;
1186 }
1187 type_name = "lm85";
1188
1189 /* Now, refine the detection */
1190 if (company == LM85_COMPANY_NATIONAL) {
1191 switch (verstep) {
1192 case LM85_VERSTEP_LM85C:
1193 type_name = "lm85c";
1194 break;
1195 case LM85_VERSTEP_LM85B:
1196 type_name = "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, ignoring\n");
1204 return -ENODEV;
1205 }
1206 break;
1207 }
1208 } else if (company == LM85_COMPANY_ANALOG_DEV) {
1209 switch (verstep) {
1210 case LM85_VERSTEP_ADM1027:
1211 type_name = "adm1027";
1212 break;
1213 case LM85_VERSTEP_ADT7463:
1214 case LM85_VERSTEP_ADT7463C:
1215 type_name = "adt7463";
1216 break;
1217 case LM85_VERSTEP_ADT7468_1:
1218 case LM85_VERSTEP_ADT7468_2:
1219 type_name = "adt7468";
1220 break;
1221 }
1222 } else if (company == LM85_COMPANY_SMSC) {
1223 switch (verstep) {
1224 case LM85_VERSTEP_EMC6D100_A0:
1225 case LM85_VERSTEP_EMC6D100_A1:
1226 /* Note: we can't tell a '100 from a '101 */
1227 type_name = "emc6d100";
1228 break;
1229 case LM85_VERSTEP_EMC6D102:
1230 type_name = "emc6d102";
1231 break;
1232 }
1233 } else {
1234 dev_dbg(&adapter->dev,
1235 "Autodetection failed: unknown vendor\n");
1236 return -ENODEV;
1237 }
1238
1239 strlcpy(info->type, type_name, I2C_NAME_SIZE);
1240
1241 return 0;
1242 }
1243
1244 static int lm85_probe(struct i2c_client *client,
1245 const struct i2c_device_id *id)
1246 {
1247 struct lm85_data *data;
1248 int err;
1249
1250 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
1251 if (!data)
1252 return -ENOMEM;
1253
1254 i2c_set_clientdata(client, data);
1255 data->type = id->driver_data;
1256 mutex_init(&data->update_lock);
1257
1258 /* Fill in the chip specific driver values */
1259 switch (data->type) {
1260 case adm1027:
1261 case adt7463:
1262 case emc6d100:
1263 case emc6d102:
1264 data->freq_map = adm1027_freq_map;
1265 break;
1266 default:
1267 data->freq_map = lm85_freq_map;
1268 }
1269
1270 /* Set the VRM version */
1271 data->vrm = vid_which_vrm();
1272
1273 /* Initialize the LM85 chip */
1274 lm85_init_client(client);
1275
1276 /* Register sysfs hooks */
1277 err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1278 if (err)
1279 goto err_kfree;
1280
1281 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1282 as a sixth digital VID input rather than an analog input. */
1283 data->vid = lm85_read_value(client, LM85_REG_VID);
1284 if (!((data->type == adt7463 || data->type == adt7468) &&
1285 (data->vid & 0x80)))
1286 if ((err = sysfs_create_group(&client->dev.kobj,
1287 &lm85_group_in4)))
1288 goto err_remove_files;
1289
1290 /* The EMC6D100 has 3 additional voltage inputs */
1291 if (data->type == emc6d100)
1292 if ((err = sysfs_create_group(&client->dev.kobj,
1293 &lm85_group_in567)))
1294 goto err_remove_files;
1295
1296 data->hwmon_dev = hwmon_device_register(&client->dev);
1297 if (IS_ERR(data->hwmon_dev)) {
1298 err = PTR_ERR(data->hwmon_dev);
1299 goto err_remove_files;
1300 }
1301
1302 return 0;
1303
1304 /* Error out and cleanup code */
1305 err_remove_files:
1306 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1307 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1308 if (data->type == emc6d100)
1309 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1310 err_kfree:
1311 kfree(data);
1312 return err;
1313 }
1314
1315 static int lm85_remove(struct i2c_client *client)
1316 {
1317 struct lm85_data *data = i2c_get_clientdata(client);
1318 hwmon_device_unregister(data->hwmon_dev);
1319 sysfs_remove_group(&client->dev.kobj, &lm85_group);
1320 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1321 if (data->type == emc6d100)
1322 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1323 kfree(data);
1324 return 0;
1325 }
1326
1327
1328 static int lm85_read_value(struct i2c_client *client, u8 reg)
1329 {
1330 int res;
1331
1332 /* What size location is it? */
1333 switch (reg) {
1334 case LM85_REG_FAN(0): /* Read WORD data */
1335 case LM85_REG_FAN(1):
1336 case LM85_REG_FAN(2):
1337 case LM85_REG_FAN(3):
1338 case LM85_REG_FAN_MIN(0):
1339 case LM85_REG_FAN_MIN(1):
1340 case LM85_REG_FAN_MIN(2):
1341 case LM85_REG_FAN_MIN(3):
1342 case LM85_REG_ALARM1: /* Read both bytes at once */
1343 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1344 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1345 break;
1346 default: /* Read BYTE data */
1347 res = i2c_smbus_read_byte_data(client, reg);
1348 break;
1349 }
1350
1351 return res;
1352 }
1353
1354 static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1355 {
1356 switch (reg) {
1357 case LM85_REG_FAN(0): /* Write WORD data */
1358 case LM85_REG_FAN(1):
1359 case LM85_REG_FAN(2):
1360 case LM85_REG_FAN(3):
1361 case LM85_REG_FAN_MIN(0):
1362 case LM85_REG_FAN_MIN(1):
1363 case LM85_REG_FAN_MIN(2):
1364 case LM85_REG_FAN_MIN(3):
1365 /* NOTE: ALARM is read only, so not included here */
1366 i2c_smbus_write_byte_data(client, reg, value & 0xff);
1367 i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1368 break;
1369 default: /* Write BYTE data */
1370 i2c_smbus_write_byte_data(client, reg, value);
1371 break;
1372 }
1373 }
1374
1375 static struct lm85_data *lm85_update_device(struct device *dev)
1376 {
1377 struct i2c_client *client = to_i2c_client(dev);
1378 struct lm85_data *data = i2c_get_clientdata(client);
1379 int i;
1380
1381 mutex_lock(&data->update_lock);
1382
1383 if (!data->valid ||
1384 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1385 /* Things that change quickly */
1386 dev_dbg(&client->dev, "Reading sensor values\n");
1387
1388 /* Have to read extended bits first to "freeze" the
1389 * more significant bits that are read later.
1390 * There are 2 additional resolution bits per channel and we
1391 * have room for 4, so we shift them to the left.
1392 */
1393 if (data->type == adm1027 || data->type == adt7463 ||
1394 data->type == adt7468) {
1395 int ext1 = lm85_read_value(client,
1396 ADM1027_REG_EXTEND_ADC1);
1397 int ext2 = lm85_read_value(client,
1398 ADM1027_REG_EXTEND_ADC2);
1399 int val = (ext1 << 8) + ext2;
1400
1401 for (i = 0; i <= 4; i++)
1402 data->in_ext[i] =
1403 ((val >> (i * 2)) & 0x03) << 2;
1404
1405 for (i = 0; i <= 2; i++)
1406 data->temp_ext[i] =
1407 (val >> ((i + 4) * 2)) & 0x0c;
1408 }
1409
1410 data->vid = lm85_read_value(client, LM85_REG_VID);
1411
1412 for (i = 0; i <= 3; ++i) {
1413 data->in[i] =
1414 lm85_read_value(client, LM85_REG_IN(i));
1415 data->fan[i] =
1416 lm85_read_value(client, LM85_REG_FAN(i));
1417 }
1418
1419 if (!((data->type == adt7463 || data->type == adt7468) &&
1420 (data->vid & 0x80))) {
1421 data->in[4] = lm85_read_value(client,
1422 LM85_REG_IN(4));
1423 }
1424
1425 if (data->type == adt7468)
1426 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
1427
1428 for (i = 0; i <= 2; ++i) {
1429 data->temp[i] =
1430 lm85_read_value(client, LM85_REG_TEMP(i));
1431 data->pwm[i] =
1432 lm85_read_value(client, LM85_REG_PWM(i));
1433
1434 if (IS_ADT7468_OFF64(data))
1435 data->temp[i] -= 64;
1436 }
1437
1438 data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1439
1440 if (data->type == emc6d100) {
1441 /* Three more voltage sensors */
1442 for (i = 5; i <= 7; ++i) {
1443 data->in[i] = lm85_read_value(client,
1444 EMC6D100_REG_IN(i));
1445 }
1446 /* More alarm bits */
1447 data->alarms |= lm85_read_value(client,
1448 EMC6D100_REG_ALARM3) << 16;
1449 } else if (data->type == emc6d102) {
1450 /* Have to read LSB bits after the MSB ones because
1451 the reading of the MSB bits has frozen the
1452 LSBs (backward from the ADM1027).
1453 */
1454 int ext1 = lm85_read_value(client,
1455 EMC6D102_REG_EXTEND_ADC1);
1456 int ext2 = lm85_read_value(client,
1457 EMC6D102_REG_EXTEND_ADC2);
1458 int ext3 = lm85_read_value(client,
1459 EMC6D102_REG_EXTEND_ADC3);
1460 int ext4 = lm85_read_value(client,
1461 EMC6D102_REG_EXTEND_ADC4);
1462 data->in_ext[0] = ext3 & 0x0f;
1463 data->in_ext[1] = ext4 & 0x0f;
1464 data->in_ext[2] = ext4 >> 4;
1465 data->in_ext[3] = ext3 >> 4;
1466 data->in_ext[4] = ext2 >> 4;
1467
1468 data->temp_ext[0] = ext1 & 0x0f;
1469 data->temp_ext[1] = ext2 & 0x0f;
1470 data->temp_ext[2] = ext1 >> 4;
1471 }
1472
1473 data->last_reading = jiffies;
1474 } /* last_reading */
1475
1476 if (!data->valid ||
1477 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1478 /* Things that don't change often */
1479 dev_dbg(&client->dev, "Reading config values\n");
1480
1481 for (i = 0; i <= 3; ++i) {
1482 data->in_min[i] =
1483 lm85_read_value(client, LM85_REG_IN_MIN(i));
1484 data->in_max[i] =
1485 lm85_read_value(client, LM85_REG_IN_MAX(i));
1486 data->fan_min[i] =
1487 lm85_read_value(client, LM85_REG_FAN_MIN(i));
1488 }
1489
1490 if (!((data->type == adt7463 || data->type == adt7468) &&
1491 (data->vid & 0x80))) {
1492 data->in_min[4] = lm85_read_value(client,
1493 LM85_REG_IN_MIN(4));
1494 data->in_max[4] = lm85_read_value(client,
1495 LM85_REG_IN_MAX(4));
1496 }
1497
1498 if (data->type == emc6d100) {
1499 for (i = 5; i <= 7; ++i) {
1500 data->in_min[i] = lm85_read_value(client,
1501 EMC6D100_REG_IN_MIN(i));
1502 data->in_max[i] = lm85_read_value(client,
1503 EMC6D100_REG_IN_MAX(i));
1504 }
1505 }
1506
1507 for (i = 0; i <= 2; ++i) {
1508 int val;
1509
1510 data->temp_min[i] =
1511 lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1512 data->temp_max[i] =
1513 lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1514
1515 data->autofan[i].config =
1516 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1517 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1518 data->pwm_freq[i] = val & 0x07;
1519 data->zone[i].range = val >> 4;
1520 data->autofan[i].min_pwm =
1521 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1522 data->zone[i].limit =
1523 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1524 data->zone[i].critical =
1525 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1526
1527 if (IS_ADT7468_OFF64(data)) {
1528 data->temp_min[i] -= 64;
1529 data->temp_max[i] -= 64;
1530 data->zone[i].limit -= 64;
1531 data->zone[i].critical -= 64;
1532 }
1533 }
1534
1535 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1536 data->autofan[0].min_off = (i & 0x20) != 0;
1537 data->autofan[1].min_off = (i & 0x40) != 0;
1538 data->autofan[2].min_off = (i & 0x80) != 0;
1539
1540 i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1541 data->zone[0].hyst = i >> 4;
1542 data->zone[1].hyst = i & 0x0f;
1543
1544 i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1545 data->zone[2].hyst = i >> 4;
1546
1547 data->last_config = jiffies;
1548 } /* last_config */
1549
1550 data->valid = 1;
1551
1552 mutex_unlock(&data->update_lock);
1553
1554 return data;
1555 }
1556
1557
1558 static int __init sm_lm85_init(void)
1559 {
1560 return i2c_add_driver(&lm85_driver);
1561 }
1562
1563 static void __exit sm_lm85_exit(void)
1564 {
1565 i2c_del_driver(&lm85_driver);
1566 }
1567
1568 MODULE_LICENSE("GPL");
1569 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1570 "Margit Schubert-While <margitsw@t-online.de>, "
1571 "Justin Thiessen <jthiessen@penguincomputing.com>");
1572 MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1573
1574 module_init(sm_lm85_init);
1575 module_exit(sm_lm85_exit);
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