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adt7470: fix pwm at a certain level during temperature sensor scan
[mirror_ubuntu-artful-kernel.git] / drivers / hwmon / adt7470.c
1 /*
2 * A hwmon driver for the Analog Devices ADT7470
3 * Copyright (C) 2007 IBM
4 *
5 * Author: Darrick J. Wong <djwong@us.ibm.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #include <linux/module.h>
23 #include <linux/jiffies.h>
24 #include <linux/i2c.h>
25 #include <linux/hwmon.h>
26 #include <linux/hwmon-sysfs.h>
27 #include <linux/err.h>
28 #include <linux/mutex.h>
29 #include <linux/delay.h>
30 #include <linux/log2.h>
31
32 /* Addresses to scan */
33 static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
34
35 /* Insmod parameters */
36 I2C_CLIENT_INSMOD_1(adt7470);
37
38 /* ADT7470 registers */
39 #define ADT7470_REG_BASE_ADDR 0x20
40 #define ADT7470_REG_TEMP_BASE_ADDR 0x20
41 #define ADT7470_REG_TEMP_MAX_ADDR 0x29
42 #define ADT7470_REG_FAN_BASE_ADDR 0x2A
43 #define ADT7470_REG_FAN_MAX_ADDR 0x31
44 #define ADT7470_REG_PWM_BASE_ADDR 0x32
45 #define ADT7470_REG_PWM_MAX_ADDR 0x35
46 #define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38
47 #define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B
48 #define ADT7470_REG_CFG 0x40
49 #define ADT7470_FSPD_MASK 0x04
50 #define ADT7470_REG_ALARM1 0x41
51 #define ADT7470_R1T_ALARM 0x01
52 #define ADT7470_R2T_ALARM 0x02
53 #define ADT7470_R3T_ALARM 0x04
54 #define ADT7470_R4T_ALARM 0x08
55 #define ADT7470_R5T_ALARM 0x10
56 #define ADT7470_R6T_ALARM 0x20
57 #define ADT7470_R7T_ALARM 0x40
58 #define ADT7470_OOL_ALARM 0x80
59 #define ADT7470_REG_ALARM2 0x42
60 #define ADT7470_R8T_ALARM 0x01
61 #define ADT7470_R9T_ALARM 0x02
62 #define ADT7470_R10T_ALARM 0x04
63 #define ADT7470_FAN1_ALARM 0x10
64 #define ADT7470_FAN2_ALARM 0x20
65 #define ADT7470_FAN3_ALARM 0x40
66 #define ADT7470_FAN4_ALARM 0x80
67 #define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44
68 #define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57
69 #define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58
70 #define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F
71 #define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60
72 #define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67
73 #define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68
74 #define ADT7470_REG_PWM12_CFG 0x68
75 #define ADT7470_PWM2_AUTO_MASK 0x40
76 #define ADT7470_PWM1_AUTO_MASK 0x80
77 #define ADT7470_PWM_AUTO_MASK 0xC0
78 #define ADT7470_REG_PWM34_CFG 0x69
79 #define ADT7470_PWM3_AUTO_MASK 0x40
80 #define ADT7470_PWM4_AUTO_MASK 0x80
81 #define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A
82 #define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D
83 #define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E
84 #define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71
85 #define ADT7470_REG_ACOUSTICS12 0x75
86 #define ADT7470_REG_ACOUSTICS34 0x76
87 #define ADT7470_REG_DEVICE 0x3D
88 #define ADT7470_REG_VENDOR 0x3E
89 #define ADT7470_REG_REVISION 0x3F
90 #define ADT7470_REG_ALARM1_MASK 0x72
91 #define ADT7470_REG_ALARM2_MASK 0x73
92 #define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C
93 #define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D
94 #define ADT7470_REG_MAX_ADDR 0x81
95
96 #define ADT7470_TEMP_COUNT 10
97 #define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x))
98 #define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2))
99 #define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \
100 ((x) * 2) + 1)
101
102 #define ADT7470_FAN_COUNT 4
103 #define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2))
104 #define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2))
105 #define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2))
106
107 #define ADT7470_PWM_COUNT 4
108 #define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x))
109 #define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x))
110 #define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x))
111 #define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
112 #define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2))
113 #define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \
114 ((x) / 2))
115
116 #define ALARM2(x) ((x) << 8)
117
118 #define ADT7470_VENDOR 0x41
119 #define ADT7470_DEVICE 0x70
120 /* datasheet only mentions a revision 2 */
121 #define ADT7470_REVISION 0x02
122
123 /* "all temps" according to hwmon sysfs interface spec */
124 #define ADT7470_PWM_ALL_TEMPS 0x3FF
125
126 /* How often do we reread sensors values? (In jiffies) */
127 #define SENSOR_REFRESH_INTERVAL (5 * HZ)
128
129 /* How often do we reread sensor limit values? (In jiffies) */
130 #define LIMIT_REFRESH_INTERVAL (60 * HZ)
131
132 /* sleep 1s while gathering temperature data */
133 #define TEMP_COLLECTION_TIME 1000
134
135 /* datasheet says to divide this number by the fan reading to get fan rpm */
136 #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
137 #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
138 #define FAN_PERIOD_INVALID 65535
139 #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
140
141 struct adt7470_data {
142 struct device *hwmon_dev;
143 struct attribute_group attrs;
144 struct mutex lock;
145 char sensors_valid;
146 char limits_valid;
147 unsigned long sensors_last_updated; /* In jiffies */
148 unsigned long limits_last_updated; /* In jiffies */
149
150 s8 temp[ADT7470_TEMP_COUNT];
151 s8 temp_min[ADT7470_TEMP_COUNT];
152 s8 temp_max[ADT7470_TEMP_COUNT];
153 u16 fan[ADT7470_FAN_COUNT];
154 u16 fan_min[ADT7470_FAN_COUNT];
155 u16 fan_max[ADT7470_FAN_COUNT];
156 u16 alarm;
157 u16 alarms_mask;
158 u8 force_pwm_max;
159 u8 pwm[ADT7470_PWM_COUNT];
160 u8 pwm_max[ADT7470_PWM_COUNT];
161 u8 pwm_automatic[ADT7470_PWM_COUNT];
162 u8 pwm_min[ADT7470_PWM_COUNT];
163 s8 pwm_tmin[ADT7470_PWM_COUNT];
164 u8 pwm_auto_temp[ADT7470_PWM_COUNT];
165 };
166
167 static int adt7470_probe(struct i2c_client *client,
168 const struct i2c_device_id *id);
169 static int adt7470_detect(struct i2c_client *client, int kind,
170 struct i2c_board_info *info);
171 static int adt7470_remove(struct i2c_client *client);
172
173 static const struct i2c_device_id adt7470_id[] = {
174 { "adt7470", adt7470 },
175 { }
176 };
177 MODULE_DEVICE_TABLE(i2c, adt7470_id);
178
179 static struct i2c_driver adt7470_driver = {
180 .class = I2C_CLASS_HWMON,
181 .driver = {
182 .name = "adt7470",
183 },
184 .probe = adt7470_probe,
185 .remove = adt7470_remove,
186 .id_table = adt7470_id,
187 .detect = adt7470_detect,
188 .address_data = &addr_data,
189 };
190
191 /*
192 * 16-bit registers on the ADT7470 are low-byte first. The data sheet says
193 * that the low byte must be read before the high byte.
194 */
195 static inline int adt7470_read_word_data(struct i2c_client *client, u8 reg)
196 {
197 u16 foo;
198 foo = i2c_smbus_read_byte_data(client, reg);
199 foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
200 return foo;
201 }
202
203 static inline int adt7470_write_word_data(struct i2c_client *client, u8 reg,
204 u16 value)
205 {
206 return i2c_smbus_write_byte_data(client, reg, value & 0xFF)
207 && i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
208 }
209
210 static void adt7470_init_client(struct i2c_client *client)
211 {
212 int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
213
214 if (reg < 0) {
215 dev_err(&client->dev, "cannot read configuration register\n");
216 } else {
217 /* start monitoring (and do a self-test) */
218 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3);
219 }
220 }
221
222 static struct adt7470_data *adt7470_update_device(struct device *dev)
223 {
224 struct i2c_client *client = to_i2c_client(dev);
225 struct adt7470_data *data = i2c_get_clientdata(client);
226 unsigned long local_jiffies = jiffies;
227 u8 cfg, pwm[4], pwm_cfg[2];
228 int i;
229
230 mutex_lock(&data->lock);
231 if (time_before(local_jiffies, data->sensors_last_updated +
232 SENSOR_REFRESH_INTERVAL)
233 && data->sensors_valid)
234 goto no_sensor_update;
235
236 /* save pwm[1-4] config register */
237 pwm_cfg[0] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(0));
238 pwm_cfg[1] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(2));
239
240 /* set manual pwm to whatever it is set to now */
241 for (i = 0; i < ADT7470_FAN_COUNT; i++)
242 pwm[i] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM(i));
243
244 /* put pwm in manual mode */
245 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0),
246 pwm_cfg[0] & ~(ADT7470_PWM_AUTO_MASK));
247 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2),
248 pwm_cfg[1] & ~(ADT7470_PWM_AUTO_MASK));
249
250 /* write pwm control to whatever it was */
251 for (i = 0; i < ADT7470_FAN_COUNT; i++)
252 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(i), pwm[i]);
253
254 /* start reading temperature sensors */
255 cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
256 cfg |= 0x80;
257 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
258
259 /*
260 * Delay is 200ms * number of tmp05 sensors. Too bad
261 * there's no way to figure out how many are connected.
262 * For now, assume 1s will work.
263 */
264 msleep(TEMP_COLLECTION_TIME);
265
266 /* done reading temperature sensors */
267 cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
268 cfg &= ~0x80;
269 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
270
271 /* restore pwm[1-4] config registers */
272 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0), pwm_cfg[0]);
273 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2), pwm_cfg[1]);
274
275 for (i = 0; i < ADT7470_TEMP_COUNT; i++)
276 data->temp[i] = i2c_smbus_read_byte_data(client,
277 ADT7470_TEMP_REG(i));
278
279 for (i = 0; i < ADT7470_FAN_COUNT; i++)
280 data->fan[i] = adt7470_read_word_data(client,
281 ADT7470_REG_FAN(i));
282
283 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
284 int reg;
285 int reg_mask;
286
287 data->pwm[i] = i2c_smbus_read_byte_data(client,
288 ADT7470_REG_PWM(i));
289
290 if (i % 2)
291 reg_mask = ADT7470_PWM2_AUTO_MASK;
292 else
293 reg_mask = ADT7470_PWM1_AUTO_MASK;
294
295 reg = ADT7470_REG_PWM_CFG(i);
296 if (i2c_smbus_read_byte_data(client, reg) & reg_mask)
297 data->pwm_automatic[i] = 1;
298 else
299 data->pwm_automatic[i] = 0;
300
301 reg = ADT7470_REG_PWM_AUTO_TEMP(i);
302 cfg = i2c_smbus_read_byte_data(client, reg);
303 if (!(i % 2))
304 data->pwm_auto_temp[i] = cfg >> 4;
305 else
306 data->pwm_auto_temp[i] = cfg & 0xF;
307 }
308
309 if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) &
310 ADT7470_FSPD_MASK)
311 data->force_pwm_max = 1;
312 else
313 data->force_pwm_max = 0;
314
315 data->alarm = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1);
316 if (data->alarm & ADT7470_OOL_ALARM)
317 data->alarm |= ALARM2(i2c_smbus_read_byte_data(client,
318 ADT7470_REG_ALARM2));
319 data->alarms_mask = adt7470_read_word_data(client,
320 ADT7470_REG_ALARM1_MASK);
321
322 data->sensors_last_updated = local_jiffies;
323 data->sensors_valid = 1;
324
325 no_sensor_update:
326 if (time_before(local_jiffies, data->limits_last_updated +
327 LIMIT_REFRESH_INTERVAL)
328 && data->limits_valid)
329 goto out;
330
331 for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
332 data->temp_min[i] = i2c_smbus_read_byte_data(client,
333 ADT7470_TEMP_MIN_REG(i));
334 data->temp_max[i] = i2c_smbus_read_byte_data(client,
335 ADT7470_TEMP_MAX_REG(i));
336 }
337
338 for (i = 0; i < ADT7470_FAN_COUNT; i++) {
339 data->fan_min[i] = adt7470_read_word_data(client,
340 ADT7470_REG_FAN_MIN(i));
341 data->fan_max[i] = adt7470_read_word_data(client,
342 ADT7470_REG_FAN_MAX(i));
343 }
344
345 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
346 data->pwm_max[i] = i2c_smbus_read_byte_data(client,
347 ADT7470_REG_PWM_MAX(i));
348 data->pwm_min[i] = i2c_smbus_read_byte_data(client,
349 ADT7470_REG_PWM_MIN(i));
350 data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
351 ADT7470_REG_PWM_TMIN(i));
352 }
353
354 data->limits_last_updated = local_jiffies;
355 data->limits_valid = 1;
356
357 out:
358 mutex_unlock(&data->lock);
359 return data;
360 }
361
362 static ssize_t show_temp_min(struct device *dev,
363 struct device_attribute *devattr,
364 char *buf)
365 {
366 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
367 struct adt7470_data *data = adt7470_update_device(dev);
368 return sprintf(buf, "%d\n", 1000 * data->temp_min[attr->index]);
369 }
370
371 static ssize_t set_temp_min(struct device *dev,
372 struct device_attribute *devattr,
373 const char *buf,
374 size_t count)
375 {
376 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
377 struct i2c_client *client = to_i2c_client(dev);
378 struct adt7470_data *data = i2c_get_clientdata(client);
379 long temp;
380
381 if (strict_strtol(buf, 10, &temp))
382 return -EINVAL;
383
384 temp = DIV_ROUND_CLOSEST(temp, 1000);
385 temp = SENSORS_LIMIT(temp, 0, 255);
386
387 mutex_lock(&data->lock);
388 data->temp_min[attr->index] = temp;
389 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index),
390 temp);
391 mutex_unlock(&data->lock);
392
393 return count;
394 }
395
396 static ssize_t show_temp_max(struct device *dev,
397 struct device_attribute *devattr,
398 char *buf)
399 {
400 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
401 struct adt7470_data *data = adt7470_update_device(dev);
402 return sprintf(buf, "%d\n", 1000 * data->temp_max[attr->index]);
403 }
404
405 static ssize_t set_temp_max(struct device *dev,
406 struct device_attribute *devattr,
407 const char *buf,
408 size_t count)
409 {
410 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
411 struct i2c_client *client = to_i2c_client(dev);
412 struct adt7470_data *data = i2c_get_clientdata(client);
413 long temp;
414
415 if (strict_strtol(buf, 10, &temp))
416 return -EINVAL;
417
418 temp = DIV_ROUND_CLOSEST(temp, 1000);
419 temp = SENSORS_LIMIT(temp, 0, 255);
420
421 mutex_lock(&data->lock);
422 data->temp_max[attr->index] = temp;
423 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index),
424 temp);
425 mutex_unlock(&data->lock);
426
427 return count;
428 }
429
430 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
431 char *buf)
432 {
433 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
434 struct adt7470_data *data = adt7470_update_device(dev);
435 return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]);
436 }
437
438 static ssize_t show_alarm_mask(struct device *dev,
439 struct device_attribute *devattr,
440 char *buf)
441 {
442 struct adt7470_data *data = adt7470_update_device(dev);
443
444 return sprintf(buf, "%x\n", data->alarms_mask);
445 }
446
447 static ssize_t show_fan_max(struct device *dev,
448 struct device_attribute *devattr,
449 char *buf)
450 {
451 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
452 struct adt7470_data *data = adt7470_update_device(dev);
453
454 if (FAN_DATA_VALID(data->fan_max[attr->index]))
455 return sprintf(buf, "%d\n",
456 FAN_PERIOD_TO_RPM(data->fan_max[attr->index]));
457 else
458 return sprintf(buf, "0\n");
459 }
460
461 static ssize_t set_fan_max(struct device *dev,
462 struct device_attribute *devattr,
463 const char *buf, size_t count)
464 {
465 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
466 struct i2c_client *client = to_i2c_client(dev);
467 struct adt7470_data *data = i2c_get_clientdata(client);
468 long temp;
469
470 if (strict_strtol(buf, 10, &temp) || !temp)
471 return -EINVAL;
472
473 temp = FAN_RPM_TO_PERIOD(temp);
474 temp = SENSORS_LIMIT(temp, 1, 65534);
475
476 mutex_lock(&data->lock);
477 data->fan_max[attr->index] = temp;
478 adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp);
479 mutex_unlock(&data->lock);
480
481 return count;
482 }
483
484 static ssize_t show_fan_min(struct device *dev,
485 struct device_attribute *devattr,
486 char *buf)
487 {
488 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
489 struct adt7470_data *data = adt7470_update_device(dev);
490
491 if (FAN_DATA_VALID(data->fan_min[attr->index]))
492 return sprintf(buf, "%d\n",
493 FAN_PERIOD_TO_RPM(data->fan_min[attr->index]));
494 else
495 return sprintf(buf, "0\n");
496 }
497
498 static ssize_t set_fan_min(struct device *dev,
499 struct device_attribute *devattr,
500 const char *buf, size_t count)
501 {
502 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
503 struct i2c_client *client = to_i2c_client(dev);
504 struct adt7470_data *data = i2c_get_clientdata(client);
505 long temp;
506
507 if (strict_strtol(buf, 10, &temp) || !temp)
508 return -EINVAL;
509
510 temp = FAN_RPM_TO_PERIOD(temp);
511 temp = SENSORS_LIMIT(temp, 1, 65534);
512
513 mutex_lock(&data->lock);
514 data->fan_min[attr->index] = temp;
515 adt7470_write_word_data(client, ADT7470_REG_FAN_MIN(attr->index), temp);
516 mutex_unlock(&data->lock);
517
518 return count;
519 }
520
521 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
522 char *buf)
523 {
524 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
525 struct adt7470_data *data = adt7470_update_device(dev);
526
527 if (FAN_DATA_VALID(data->fan[attr->index]))
528 return sprintf(buf, "%d\n",
529 FAN_PERIOD_TO_RPM(data->fan[attr->index]));
530 else
531 return sprintf(buf, "0\n");
532 }
533
534 static ssize_t show_force_pwm_max(struct device *dev,
535 struct device_attribute *devattr,
536 char *buf)
537 {
538 struct adt7470_data *data = adt7470_update_device(dev);
539 return sprintf(buf, "%d\n", data->force_pwm_max);
540 }
541
542 static ssize_t set_force_pwm_max(struct device *dev,
543 struct device_attribute *devattr,
544 const char *buf,
545 size_t count)
546 {
547 struct i2c_client *client = to_i2c_client(dev);
548 struct adt7470_data *data = i2c_get_clientdata(client);
549 long temp;
550 u8 reg;
551
552 if (strict_strtol(buf, 10, &temp))
553 return -EINVAL;
554
555 mutex_lock(&data->lock);
556 data->force_pwm_max = temp;
557 reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
558 if (temp)
559 reg |= ADT7470_FSPD_MASK;
560 else
561 reg &= ~ADT7470_FSPD_MASK;
562 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg);
563 mutex_unlock(&data->lock);
564
565 return count;
566 }
567
568 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
569 char *buf)
570 {
571 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
572 struct adt7470_data *data = adt7470_update_device(dev);
573 return sprintf(buf, "%d\n", data->pwm[attr->index]);
574 }
575
576 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
577 const char *buf, size_t count)
578 {
579 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
580 struct i2c_client *client = to_i2c_client(dev);
581 struct adt7470_data *data = i2c_get_clientdata(client);
582 long temp;
583
584 if (strict_strtol(buf, 10, &temp))
585 return -EINVAL;
586
587 temp = SENSORS_LIMIT(temp, 0, 255);
588
589 mutex_lock(&data->lock);
590 data->pwm[attr->index] = temp;
591 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(attr->index), temp);
592 mutex_unlock(&data->lock);
593
594 return count;
595 }
596
597 static ssize_t show_pwm_max(struct device *dev,
598 struct device_attribute *devattr,
599 char *buf)
600 {
601 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
602 struct adt7470_data *data = adt7470_update_device(dev);
603 return sprintf(buf, "%d\n", data->pwm_max[attr->index]);
604 }
605
606 static ssize_t set_pwm_max(struct device *dev,
607 struct device_attribute *devattr,
608 const char *buf,
609 size_t count)
610 {
611 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
612 struct i2c_client *client = to_i2c_client(dev);
613 struct adt7470_data *data = i2c_get_clientdata(client);
614 long temp;
615
616 if (strict_strtol(buf, 10, &temp))
617 return -EINVAL;
618
619 temp = SENSORS_LIMIT(temp, 0, 255);
620
621 mutex_lock(&data->lock);
622 data->pwm_max[attr->index] = temp;
623 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MAX(attr->index),
624 temp);
625 mutex_unlock(&data->lock);
626
627 return count;
628 }
629
630 static ssize_t show_pwm_min(struct device *dev,
631 struct device_attribute *devattr,
632 char *buf)
633 {
634 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
635 struct adt7470_data *data = adt7470_update_device(dev);
636 return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
637 }
638
639 static ssize_t set_pwm_min(struct device *dev,
640 struct device_attribute *devattr,
641 const char *buf,
642 size_t count)
643 {
644 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
645 struct i2c_client *client = to_i2c_client(dev);
646 struct adt7470_data *data = i2c_get_clientdata(client);
647 long temp;
648
649 if (strict_strtol(buf, 10, &temp))
650 return -EINVAL;
651
652 temp = SENSORS_LIMIT(temp, 0, 255);
653
654 mutex_lock(&data->lock);
655 data->pwm_min[attr->index] = temp;
656 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MIN(attr->index),
657 temp);
658 mutex_unlock(&data->lock);
659
660 return count;
661 }
662
663 static ssize_t show_pwm_tmax(struct device *dev,
664 struct device_attribute *devattr,
665 char *buf)
666 {
667 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
668 struct adt7470_data *data = adt7470_update_device(dev);
669 /* the datasheet says that tmax = tmin + 20C */
670 return sprintf(buf, "%d\n", 1000 * (20 + data->pwm_tmin[attr->index]));
671 }
672
673 static ssize_t show_pwm_tmin(struct device *dev,
674 struct device_attribute *devattr,
675 char *buf)
676 {
677 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
678 struct adt7470_data *data = adt7470_update_device(dev);
679 return sprintf(buf, "%d\n", 1000 * data->pwm_tmin[attr->index]);
680 }
681
682 static ssize_t set_pwm_tmin(struct device *dev,
683 struct device_attribute *devattr,
684 const char *buf,
685 size_t count)
686 {
687 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
688 struct i2c_client *client = to_i2c_client(dev);
689 struct adt7470_data *data = i2c_get_clientdata(client);
690 long temp;
691
692 if (strict_strtol(buf, 10, &temp))
693 return -EINVAL;
694
695 temp = DIV_ROUND_CLOSEST(temp, 1000);
696 temp = SENSORS_LIMIT(temp, 0, 255);
697
698 mutex_lock(&data->lock);
699 data->pwm_tmin[attr->index] = temp;
700 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index),
701 temp);
702 mutex_unlock(&data->lock);
703
704 return count;
705 }
706
707 static ssize_t show_pwm_auto(struct device *dev,
708 struct device_attribute *devattr,
709 char *buf)
710 {
711 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
712 struct adt7470_data *data = adt7470_update_device(dev);
713 return sprintf(buf, "%d\n", 1 + data->pwm_automatic[attr->index]);
714 }
715
716 static ssize_t set_pwm_auto(struct device *dev,
717 struct device_attribute *devattr,
718 const char *buf,
719 size_t count)
720 {
721 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
722 struct i2c_client *client = to_i2c_client(dev);
723 struct adt7470_data *data = i2c_get_clientdata(client);
724 int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index);
725 int pwm_auto_reg_mask;
726 long temp;
727 u8 reg;
728
729 if (strict_strtol(buf, 10, &temp))
730 return -EINVAL;
731
732 if (attr->index % 2)
733 pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK;
734 else
735 pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK;
736
737 if (temp != 2 && temp != 1)
738 return -EINVAL;
739 temp--;
740
741 mutex_lock(&data->lock);
742 data->pwm_automatic[attr->index] = temp;
743 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
744 if (temp)
745 reg |= pwm_auto_reg_mask;
746 else
747 reg &= ~pwm_auto_reg_mask;
748 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
749 mutex_unlock(&data->lock);
750
751 return count;
752 }
753
754 static ssize_t show_pwm_auto_temp(struct device *dev,
755 struct device_attribute *devattr,
756 char *buf)
757 {
758 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
759 struct adt7470_data *data = adt7470_update_device(dev);
760 u8 ctrl = data->pwm_auto_temp[attr->index];
761
762 if (ctrl)
763 return sprintf(buf, "%d\n", 1 << (ctrl - 1));
764 else
765 return sprintf(buf, "%d\n", ADT7470_PWM_ALL_TEMPS);
766 }
767
768 static int cvt_auto_temp(int input)
769 {
770 if (input == ADT7470_PWM_ALL_TEMPS)
771 return 0;
772 if (input < 1 || !is_power_of_2(input))
773 return -EINVAL;
774 return ilog2(input) + 1;
775 }
776
777 static ssize_t set_pwm_auto_temp(struct device *dev,
778 struct device_attribute *devattr,
779 const char *buf,
780 size_t count)
781 {
782 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
783 struct i2c_client *client = to_i2c_client(dev);
784 struct adt7470_data *data = i2c_get_clientdata(client);
785 int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index);
786 long temp;
787 u8 reg;
788
789 if (strict_strtol(buf, 10, &temp))
790 return -EINVAL;
791
792 temp = cvt_auto_temp(temp);
793 if (temp < 0)
794 return temp;
795
796 mutex_lock(&data->lock);
797 data->pwm_automatic[attr->index] = temp;
798 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
799
800 if (!(attr->index % 2)) {
801 reg &= 0xF;
802 reg |= (temp << 4) & 0xF0;
803 } else {
804 reg &= 0xF0;
805 reg |= temp & 0xF;
806 }
807
808 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
809 mutex_unlock(&data->lock);
810
811 return count;
812 }
813
814 static ssize_t show_alarm(struct device *dev,
815 struct device_attribute *devattr,
816 char *buf)
817 {
818 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
819 struct adt7470_data *data = adt7470_update_device(dev);
820
821 if (data->alarm & attr->index)
822 return sprintf(buf, "1\n");
823 else
824 return sprintf(buf, "0\n");
825 }
826
827 static DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL);
828
829 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
830 set_temp_max, 0);
831 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
832 set_temp_max, 1);
833 static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
834 set_temp_max, 2);
835 static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
836 set_temp_max, 3);
837 static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_temp_max,
838 set_temp_max, 4);
839 static SENSOR_DEVICE_ATTR(temp6_max, S_IWUSR | S_IRUGO, show_temp_max,
840 set_temp_max, 5);
841 static SENSOR_DEVICE_ATTR(temp7_max, S_IWUSR | S_IRUGO, show_temp_max,
842 set_temp_max, 6);
843 static SENSOR_DEVICE_ATTR(temp8_max, S_IWUSR | S_IRUGO, show_temp_max,
844 set_temp_max, 7);
845 static SENSOR_DEVICE_ATTR(temp9_max, S_IWUSR | S_IRUGO, show_temp_max,
846 set_temp_max, 8);
847 static SENSOR_DEVICE_ATTR(temp10_max, S_IWUSR | S_IRUGO, show_temp_max,
848 set_temp_max, 9);
849
850 static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
851 set_temp_min, 0);
852 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
853 set_temp_min, 1);
854 static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
855 set_temp_min, 2);
856 static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
857 set_temp_min, 3);
858 static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_temp_min,
859 set_temp_min, 4);
860 static SENSOR_DEVICE_ATTR(temp6_min, S_IWUSR | S_IRUGO, show_temp_min,
861 set_temp_min, 5);
862 static SENSOR_DEVICE_ATTR(temp7_min, S_IWUSR | S_IRUGO, show_temp_min,
863 set_temp_min, 6);
864 static SENSOR_DEVICE_ATTR(temp8_min, S_IWUSR | S_IRUGO, show_temp_min,
865 set_temp_min, 7);
866 static SENSOR_DEVICE_ATTR(temp9_min, S_IWUSR | S_IRUGO, show_temp_min,
867 set_temp_min, 8);
868 static SENSOR_DEVICE_ATTR(temp10_min, S_IWUSR | S_IRUGO, show_temp_min,
869 set_temp_min, 9);
870
871 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
872 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
873 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
874 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
875 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
876 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5);
877 static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6);
878 static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
879 static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8);
880 static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9);
881
882 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
883 ADT7470_R1T_ALARM);
884 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
885 ADT7470_R2T_ALARM);
886 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
887 ADT7470_R3T_ALARM);
888 static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
889 ADT7470_R4T_ALARM);
890 static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
891 ADT7470_R5T_ALARM);
892 static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
893 ADT7470_R6T_ALARM);
894 static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO, show_alarm, NULL,
895 ADT7470_R7T_ALARM);
896 static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO, show_alarm, NULL,
897 ALARM2(ADT7470_R8T_ALARM));
898 static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO, show_alarm, NULL,
899 ALARM2(ADT7470_R9T_ALARM));
900 static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO, show_alarm, NULL,
901 ALARM2(ADT7470_R10T_ALARM));
902
903 static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max,
904 set_fan_max, 0);
905 static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max,
906 set_fan_max, 1);
907 static SENSOR_DEVICE_ATTR(fan3_max, S_IWUSR | S_IRUGO, show_fan_max,
908 set_fan_max, 2);
909 static SENSOR_DEVICE_ATTR(fan4_max, S_IWUSR | S_IRUGO, show_fan_max,
910 set_fan_max, 3);
911
912 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
913 set_fan_min, 0);
914 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
915 set_fan_min, 1);
916 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
917 set_fan_min, 2);
918 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
919 set_fan_min, 3);
920
921 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
922 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
923 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
924 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
925
926 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
927 ALARM2(ADT7470_FAN1_ALARM));
928 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
929 ALARM2(ADT7470_FAN2_ALARM));
930 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
931 ALARM2(ADT7470_FAN3_ALARM));
932 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
933 ALARM2(ADT7470_FAN4_ALARM));
934
935 static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
936 show_force_pwm_max, set_force_pwm_max, 0);
937
938 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
939 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
940 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
941 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
942
943 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
944 show_pwm_min, set_pwm_min, 0);
945 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
946 show_pwm_min, set_pwm_min, 1);
947 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
948 show_pwm_min, set_pwm_min, 2);
949 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
950 show_pwm_min, set_pwm_min, 3);
951
952 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
953 show_pwm_max, set_pwm_max, 0);
954 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
955 show_pwm_max, set_pwm_max, 1);
956 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
957 show_pwm_max, set_pwm_max, 2);
958 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
959 show_pwm_max, set_pwm_max, 3);
960
961 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
962 show_pwm_tmin, set_pwm_tmin, 0);
963 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO,
964 show_pwm_tmin, set_pwm_tmin, 1);
965 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO,
966 show_pwm_tmin, set_pwm_tmin, 2);
967 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO,
968 show_pwm_tmin, set_pwm_tmin, 3);
969
970 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, show_pwm_tmax,
971 NULL, 0);
972 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IRUGO, show_pwm_tmax,
973 NULL, 1);
974 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IRUGO, show_pwm_tmax,
975 NULL, 2);
976 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IRUGO, show_pwm_tmax,
977 NULL, 3);
978
979 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
980 set_pwm_auto, 0);
981 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
982 set_pwm_auto, 1);
983 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
984 set_pwm_auto, 2);
985 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
986 set_pwm_auto, 3);
987
988 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
989 show_pwm_auto_temp, set_pwm_auto_temp, 0);
990 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
991 show_pwm_auto_temp, set_pwm_auto_temp, 1);
992 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
993 show_pwm_auto_temp, set_pwm_auto_temp, 2);
994 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
995 show_pwm_auto_temp, set_pwm_auto_temp, 3);
996
997 static struct attribute *adt7470_attr[] =
998 {
999 &dev_attr_alarm_mask.attr,
1000 &sensor_dev_attr_temp1_max.dev_attr.attr,
1001 &sensor_dev_attr_temp2_max.dev_attr.attr,
1002 &sensor_dev_attr_temp3_max.dev_attr.attr,
1003 &sensor_dev_attr_temp4_max.dev_attr.attr,
1004 &sensor_dev_attr_temp5_max.dev_attr.attr,
1005 &sensor_dev_attr_temp6_max.dev_attr.attr,
1006 &sensor_dev_attr_temp7_max.dev_attr.attr,
1007 &sensor_dev_attr_temp8_max.dev_attr.attr,
1008 &sensor_dev_attr_temp9_max.dev_attr.attr,
1009 &sensor_dev_attr_temp10_max.dev_attr.attr,
1010 &sensor_dev_attr_temp1_min.dev_attr.attr,
1011 &sensor_dev_attr_temp2_min.dev_attr.attr,
1012 &sensor_dev_attr_temp3_min.dev_attr.attr,
1013 &sensor_dev_attr_temp4_min.dev_attr.attr,
1014 &sensor_dev_attr_temp5_min.dev_attr.attr,
1015 &sensor_dev_attr_temp6_min.dev_attr.attr,
1016 &sensor_dev_attr_temp7_min.dev_attr.attr,
1017 &sensor_dev_attr_temp8_min.dev_attr.attr,
1018 &sensor_dev_attr_temp9_min.dev_attr.attr,
1019 &sensor_dev_attr_temp10_min.dev_attr.attr,
1020 &sensor_dev_attr_temp1_input.dev_attr.attr,
1021 &sensor_dev_attr_temp2_input.dev_attr.attr,
1022 &sensor_dev_attr_temp3_input.dev_attr.attr,
1023 &sensor_dev_attr_temp4_input.dev_attr.attr,
1024 &sensor_dev_attr_temp5_input.dev_attr.attr,
1025 &sensor_dev_attr_temp6_input.dev_attr.attr,
1026 &sensor_dev_attr_temp7_input.dev_attr.attr,
1027 &sensor_dev_attr_temp8_input.dev_attr.attr,
1028 &sensor_dev_attr_temp9_input.dev_attr.attr,
1029 &sensor_dev_attr_temp10_input.dev_attr.attr,
1030 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1031 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1032 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1033 &sensor_dev_attr_temp4_alarm.dev_attr.attr,
1034 &sensor_dev_attr_temp5_alarm.dev_attr.attr,
1035 &sensor_dev_attr_temp6_alarm.dev_attr.attr,
1036 &sensor_dev_attr_temp7_alarm.dev_attr.attr,
1037 &sensor_dev_attr_temp8_alarm.dev_attr.attr,
1038 &sensor_dev_attr_temp9_alarm.dev_attr.attr,
1039 &sensor_dev_attr_temp10_alarm.dev_attr.attr,
1040 &sensor_dev_attr_fan1_max.dev_attr.attr,
1041 &sensor_dev_attr_fan2_max.dev_attr.attr,
1042 &sensor_dev_attr_fan3_max.dev_attr.attr,
1043 &sensor_dev_attr_fan4_max.dev_attr.attr,
1044 &sensor_dev_attr_fan1_min.dev_attr.attr,
1045 &sensor_dev_attr_fan2_min.dev_attr.attr,
1046 &sensor_dev_attr_fan3_min.dev_attr.attr,
1047 &sensor_dev_attr_fan4_min.dev_attr.attr,
1048 &sensor_dev_attr_fan1_input.dev_attr.attr,
1049 &sensor_dev_attr_fan2_input.dev_attr.attr,
1050 &sensor_dev_attr_fan3_input.dev_attr.attr,
1051 &sensor_dev_attr_fan4_input.dev_attr.attr,
1052 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1053 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1054 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1055 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1056 &sensor_dev_attr_force_pwm_max.dev_attr.attr,
1057 &sensor_dev_attr_pwm1.dev_attr.attr,
1058 &sensor_dev_attr_pwm2.dev_attr.attr,
1059 &sensor_dev_attr_pwm3.dev_attr.attr,
1060 &sensor_dev_attr_pwm4.dev_attr.attr,
1061 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1062 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1063 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1064 &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr,
1065 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1066 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1067 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1068 &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr,
1069 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1070 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1071 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1072 &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,
1073 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1074 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1075 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1076 &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
1077 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1078 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1079 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1080 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
1081 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1082 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1083 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1084 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
1085 NULL
1086 };
1087
1088 /* Return 0 if detection is successful, -ENODEV otherwise */
1089 static int adt7470_detect(struct i2c_client *client, int kind,
1090 struct i2c_board_info *info)
1091 {
1092 struct i2c_adapter *adapter = client->adapter;
1093
1094 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1095 return -ENODEV;
1096
1097 if (kind <= 0) {
1098 int vendor, device, revision;
1099
1100 vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR);
1101 if (vendor != ADT7470_VENDOR)
1102 return -ENODEV;
1103
1104 device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE);
1105 if (device != ADT7470_DEVICE)
1106 return -ENODEV;
1107
1108 revision = i2c_smbus_read_byte_data(client,
1109 ADT7470_REG_REVISION);
1110 if (revision != ADT7470_REVISION)
1111 return -ENODEV;
1112 } else
1113 dev_dbg(&adapter->dev, "detection forced\n");
1114
1115 strlcpy(info->type, "adt7470", I2C_NAME_SIZE);
1116
1117 return 0;
1118 }
1119
1120 static int adt7470_probe(struct i2c_client *client,
1121 const struct i2c_device_id *id)
1122 {
1123 struct adt7470_data *data;
1124 int err;
1125
1126 data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL);
1127 if (!data) {
1128 err = -ENOMEM;
1129 goto exit;
1130 }
1131
1132 i2c_set_clientdata(client, data);
1133 mutex_init(&data->lock);
1134
1135 dev_info(&client->dev, "%s chip found\n", client->name);
1136
1137 /* Initialize the ADT7470 chip */
1138 adt7470_init_client(client);
1139
1140 /* Register sysfs hooks */
1141 data->attrs.attrs = adt7470_attr;
1142 if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
1143 goto exit_free;
1144
1145 data->hwmon_dev = hwmon_device_register(&client->dev);
1146 if (IS_ERR(data->hwmon_dev)) {
1147 err = PTR_ERR(data->hwmon_dev);
1148 goto exit_remove;
1149 }
1150
1151 return 0;
1152
1153 exit_remove:
1154 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1155 exit_free:
1156 kfree(data);
1157 exit:
1158 return err;
1159 }
1160
1161 static int adt7470_remove(struct i2c_client *client)
1162 {
1163 struct adt7470_data *data = i2c_get_clientdata(client);
1164
1165 hwmon_device_unregister(data->hwmon_dev);
1166 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1167 kfree(data);
1168 return 0;
1169 }
1170
1171 static int __init adt7470_init(void)
1172 {
1173 return i2c_add_driver(&adt7470_driver);
1174 }
1175
1176 static void __exit adt7470_exit(void)
1177 {
1178 i2c_del_driver(&adt7470_driver);
1179 }
1180
1181 MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
1182 MODULE_DESCRIPTION("ADT7470 driver");
1183 MODULE_LICENSE("GPL");
1184
1185 module_init(adt7470_init);
1186 module_exit(adt7470_exit);
Ubuntu Artful kernel mirror