tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/kthread.h>
32#include <linux/slab.h>
33
34/* Addresses to scan */
35static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
36
37/* ADT7470 registers */
38#define ADT7470_REG_BASE_ADDR 0x20
39#define ADT7470_REG_TEMP_BASE_ADDR 0x20
40#define ADT7470_REG_TEMP_MAX_ADDR 0x29
41#define ADT7470_REG_FAN_BASE_ADDR 0x2A
42#define ADT7470_REG_FAN_MAX_ADDR 0x31
43#define ADT7470_REG_PWM_BASE_ADDR 0x32
44#define ADT7470_REG_PWM_MAX_ADDR 0x35
45#define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38
46#define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B
47#define ADT7470_REG_CFG 0x40
48#define ADT7470_FSPD_MASK 0x04
49#define ADT7470_REG_ALARM1 0x41
50#define ADT7470_R1T_ALARM 0x01
51#define ADT7470_R2T_ALARM 0x02
52#define ADT7470_R3T_ALARM 0x04
53#define ADT7470_R4T_ALARM 0x08
54#define ADT7470_R5T_ALARM 0x10
55#define ADT7470_R6T_ALARM 0x20
56#define ADT7470_R7T_ALARM 0x40
57#define ADT7470_OOL_ALARM 0x80
58#define ADT7470_REG_ALARM2 0x42
59#define ADT7470_R8T_ALARM 0x01
60#define ADT7470_R9T_ALARM 0x02
61#define ADT7470_R10T_ALARM 0x04
62#define ADT7470_FAN1_ALARM 0x10
63#define ADT7470_FAN2_ALARM 0x20
64#define ADT7470_FAN3_ALARM 0x40
65#define ADT7470_FAN4_ALARM 0x80
66#define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44
67#define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57
68#define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58
69#define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F
70#define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60
71#define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67
72#define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68
73#define ADT7470_REG_PWM12_CFG 0x68
74#define ADT7470_PWM2_AUTO_MASK 0x40
75#define ADT7470_PWM1_AUTO_MASK 0x80
76#define ADT7470_PWM_AUTO_MASK 0xC0
77#define ADT7470_REG_PWM34_CFG 0x69
78#define ADT7470_PWM3_AUTO_MASK 0x40
79#define ADT7470_PWM4_AUTO_MASK 0x80
80#define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A
81#define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D
82#define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E
83#define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71
84#define ADT7470_REG_ACOUSTICS12 0x75
85#define ADT7470_REG_ACOUSTICS34 0x76
86#define ADT7470_REG_DEVICE 0x3D
87#define ADT7470_REG_VENDOR 0x3E
88#define ADT7470_REG_REVISION 0x3F
89#define ADT7470_REG_ALARM1_MASK 0x72
90#define ADT7470_REG_ALARM2_MASK 0x73
91#define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C
92#define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D
93#define ADT7470_REG_MAX_ADDR 0x81
94
95#define ADT7470_TEMP_COUNT 10
96#define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x))
97#define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2))
98#define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \
99 ((x) * 2) + 1)
100
101#define ADT7470_FAN_COUNT 4
102#define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2))
103#define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2))
104#define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2))
105
106#define ADT7470_PWM_COUNT 4
107#define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x))
108#define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x))
109#define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x))
110#define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
111#define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2))
112#define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \
113 ((x) / 2))
114
115#define ALARM2(x) ((x) << 8)
116
117#define ADT7470_VENDOR 0x41
118#define ADT7470_DEVICE 0x70
119/* datasheet only mentions a revision 2 */
120#define ADT7470_REVISION 0x02
121
122/* "all temps" according to hwmon sysfs interface spec */
123#define ADT7470_PWM_ALL_TEMPS 0x3FF
124
125/* How often do we reread sensors values? (In jiffies) */
126#define SENSOR_REFRESH_INTERVAL (5 * HZ)
127
128/* How often do we reread sensor limit values? (In jiffies) */
129#define LIMIT_REFRESH_INTERVAL (60 * HZ)
130
131/* Wait at least 200ms per sensor for 10 sensors */
132#define TEMP_COLLECTION_TIME 2000
133
134/* auto update thing won't fire more than every 2s */
135#define AUTO_UPDATE_INTERVAL 2000
136
137/* datasheet says to divide this number by the fan reading to get fan rpm */
138#define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
139#define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
140#define FAN_PERIOD_INVALID 65535
141#define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
142
143struct adt7470_data {
144 struct device *hwmon_dev;
145 struct attribute_group attrs;
146 struct mutex lock;
147 char sensors_valid;
148 char limits_valid;
149 unsigned long sensors_last_updated; /* In jiffies */
150 unsigned long limits_last_updated; /* In jiffies */
151
152 int num_temp_sensors; /* -1 = probe */
153 int temperatures_probed;
154
155 s8 temp[ADT7470_TEMP_COUNT];
156 s8 temp_min[ADT7470_TEMP_COUNT];
157 s8 temp_max[ADT7470_TEMP_COUNT];
158 u16 fan[ADT7470_FAN_COUNT];
159 u16 fan_min[ADT7470_FAN_COUNT];
160 u16 fan_max[ADT7470_FAN_COUNT];
161 u16 alarm;
162 u16 alarms_mask;
163 u8 force_pwm_max;
164 u8 pwm[ADT7470_PWM_COUNT];
165 u8 pwm_max[ADT7470_PWM_COUNT];
166 u8 pwm_automatic[ADT7470_PWM_COUNT];
167 u8 pwm_min[ADT7470_PWM_COUNT];
168 s8 pwm_tmin[ADT7470_PWM_COUNT];
169 u8 pwm_auto_temp[ADT7470_PWM_COUNT];
170
171 struct task_struct *auto_update;
172 struct completion auto_update_stop;
173 unsigned int auto_update_interval;
174};
175
176static int adt7470_probe(struct i2c_client *client,
177 const struct i2c_device_id *id);
178static int adt7470_detect(struct i2c_client *client,
179 struct i2c_board_info *info);
180static int adt7470_remove(struct i2c_client *client);
181
182static const struct i2c_device_id adt7470_id[] = {
183 { "adt7470", 0 },
184 { }
185};
186MODULE_DEVICE_TABLE(i2c, adt7470_id);
187
188static struct i2c_driver adt7470_driver = {
189 .class = I2C_CLASS_HWMON,
190 .driver = {
191 .name = "adt7470",
192 },
193 .probe = adt7470_probe,
194 .remove = adt7470_remove,
195 .id_table = adt7470_id,
196 .detect = adt7470_detect,
197 .address_list = normal_i2c,
198};
199
200/*
201 * 16-bit registers on the ADT7470 are low-byte first. The data sheet says
202 * that the low byte must be read before the high byte.
203 */
204static inline int adt7470_read_word_data(struct i2c_client *client, u8 reg)
205{
206 u16 foo;
207 foo = i2c_smbus_read_byte_data(client, reg);
208 foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
209 return foo;
210}
211
212static inline int adt7470_write_word_data(struct i2c_client *client, u8 reg,
213 u16 value)
214{
215 return i2c_smbus_write_byte_data(client, reg, value & 0xFF)
216 && i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
217}
218
219static void adt7470_init_client(struct i2c_client *client)
220{
221 int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
222
223 if (reg < 0) {
224 dev_err(&client->dev, "cannot read configuration register\n");
225 } else {
226 /* start monitoring (and do a self-test) */
227 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3);
228 }
229}
230
231/* Probe for temperature sensors. Assumes lock is held */
232static int adt7470_read_temperatures(struct i2c_client *client,
233 struct adt7470_data *data)
234{
235 unsigned long res;
236 int i;
237 u8 cfg, pwm[4], pwm_cfg[2];
238
239 /* save pwm[1-4] config register */
240 pwm_cfg[0] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(0));
241 pwm_cfg[1] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(2));
242
243 /* set manual pwm to whatever it is set to now */
244 for (i = 0; i < ADT7470_FAN_COUNT; i++)
245 pwm[i] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM(i));
246
247 /* put pwm in manual mode */
248 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0),
249 pwm_cfg[0] & ~(ADT7470_PWM_AUTO_MASK));
250 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2),
251 pwm_cfg[1] & ~(ADT7470_PWM_AUTO_MASK));
252
253 /* write pwm control to whatever it was */
254 for (i = 0; i < ADT7470_FAN_COUNT; i++)
255 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(i), pwm[i]);
256
257 /* start reading temperature sensors */
258 cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
259 cfg |= 0x80;
260 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
261
262 /* Delay is 200ms * number of temp sensors. */
263 res = msleep_interruptible((data->num_temp_sensors >= 0 ?
264 data->num_temp_sensors * 200 :
265 TEMP_COLLECTION_TIME));
266
267 /* done reading temperature sensors */
268 cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
269 cfg &= ~0x80;
270 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
271
272 /* restore pwm[1-4] config registers */
273 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0), pwm_cfg[0]);
274 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2), pwm_cfg[1]);
275
276 if (res) {
277 printk(KERN_ERR "ha ha, interrupted");
278 return -EAGAIN;
279 }
280
281 /* Only count fans if we have to */
282 if (data->num_temp_sensors >= 0)
283 return 0;
284
285 for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
286 data->temp[i] = i2c_smbus_read_byte_data(client,
287 ADT7470_TEMP_REG(i));
288 if (data->temp[i])
289 data->num_temp_sensors = i + 1;
290 }
291 data->temperatures_probed = 1;
292 return 0;
293}
294
295static int adt7470_update_thread(void *p)
296{
297 struct i2c_client *client = p;
298 struct adt7470_data *data = i2c_get_clientdata(client);
299
300 while (!kthread_should_stop()) {
301 mutex_lock(&data->lock);
302 adt7470_read_temperatures(client, data);
303 mutex_unlock(&data->lock);
304 if (kthread_should_stop())
305 break;
306 msleep_interruptible(data->auto_update_interval);
307 }
308
309 complete_all(&data->auto_update_stop);
310 return 0;
311}
312
313static struct adt7470_data *adt7470_update_device(struct device *dev)
314{
315 struct i2c_client *client = to_i2c_client(dev);
316 struct adt7470_data *data = i2c_get_clientdata(client);
317 unsigned long local_jiffies = jiffies;
318 u8 cfg;
319 int i;
320 int need_sensors = 1;
321 int need_limits = 1;
322
323 /*
324 * Figure out if we need to update the shadow registers.
325 * Lockless means that we may occasionally report out of
326 * date data.
327 */
328 if (time_before(local_jiffies, data->sensors_last_updated +
329 SENSOR_REFRESH_INTERVAL) &&
330 data->sensors_valid)
331 need_sensors = 0;
332
333 if (time_before(local_jiffies, data->limits_last_updated +
334 LIMIT_REFRESH_INTERVAL) &&
335 data->limits_valid)
336 need_limits = 0;
337
338 if (!need_sensors && !need_limits)
339 return data;
340
341 mutex_lock(&data->lock);
342 if (!need_sensors)
343 goto no_sensor_update;
344
345 if (!data->temperatures_probed)
346 adt7470_read_temperatures(client, data);
347 else
348 for (i = 0; i < ADT7470_TEMP_COUNT; i++)
349 data->temp[i] = i2c_smbus_read_byte_data(client,
350 ADT7470_TEMP_REG(i));
351
352 for (i = 0; i < ADT7470_FAN_COUNT; i++)
353 data->fan[i] = adt7470_read_word_data(client,
354 ADT7470_REG_FAN(i));
355
356 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
357 int reg;
358 int reg_mask;
359
360 data->pwm[i] = i2c_smbus_read_byte_data(client,
361 ADT7470_REG_PWM(i));
362
363 if (i % 2)
364 reg_mask = ADT7470_PWM2_AUTO_MASK;
365 else
366 reg_mask = ADT7470_PWM1_AUTO_MASK;
367
368 reg = ADT7470_REG_PWM_CFG(i);
369 if (i2c_smbus_read_byte_data(client, reg) & reg_mask)
370 data->pwm_automatic[i] = 1;
371 else
372 data->pwm_automatic[i] = 0;
373
374 reg = ADT7470_REG_PWM_AUTO_TEMP(i);
375 cfg = i2c_smbus_read_byte_data(client, reg);
376 if (!(i % 2))
377 data->pwm_auto_temp[i] = cfg >> 4;
378 else
379 data->pwm_auto_temp[i] = cfg & 0xF;
380 }
381
382 if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) &
383 ADT7470_FSPD_MASK)
384 data->force_pwm_max = 1;
385 else
386 data->force_pwm_max = 0;
387
388 data->alarm = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1);
389 if (data->alarm & ADT7470_OOL_ALARM)
390 data->alarm |= ALARM2(i2c_smbus_read_byte_data(client,
391 ADT7470_REG_ALARM2));
392 data->alarms_mask = adt7470_read_word_data(client,
393 ADT7470_REG_ALARM1_MASK);
394
395 data->sensors_last_updated = local_jiffies;
396 data->sensors_valid = 1;
397
398no_sensor_update:
399 if (!need_limits)
400 goto out;
401
402 for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
403 data->temp_min[i] = i2c_smbus_read_byte_data(client,
404 ADT7470_TEMP_MIN_REG(i));
405 data->temp_max[i] = i2c_smbus_read_byte_data(client,
406 ADT7470_TEMP_MAX_REG(i));
407 }
408
409 for (i = 0; i < ADT7470_FAN_COUNT; i++) {
410 data->fan_min[i] = adt7470_read_word_data(client,
411 ADT7470_REG_FAN_MIN(i));
412 data->fan_max[i] = adt7470_read_word_data(client,
413 ADT7470_REG_FAN_MAX(i));
414 }
415
416 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
417 data->pwm_max[i] = i2c_smbus_read_byte_data(client,
418 ADT7470_REG_PWM_MAX(i));
419 data->pwm_min[i] = i2c_smbus_read_byte_data(client,
420 ADT7470_REG_PWM_MIN(i));
421 data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
422 ADT7470_REG_PWM_TMIN(i));
423 }
424
425 data->limits_last_updated = local_jiffies;
426 data->limits_valid = 1;
427
428out:
429 mutex_unlock(&data->lock);
430 return data;
431}
432
433static ssize_t show_auto_update_interval(struct device *dev,
434 struct device_attribute *devattr,
435 char *buf)
436{
437 struct adt7470_data *data = adt7470_update_device(dev);
438 return sprintf(buf, "%d\n", data->auto_update_interval);
439}
440
441static ssize_t set_auto_update_interval(struct device *dev,
442 struct device_attribute *devattr,
443 const char *buf,
444 size_t count)
445{
446 struct i2c_client *client = to_i2c_client(dev);
447 struct adt7470_data *data = i2c_get_clientdata(client);
448 long temp;
449
450 if (strict_strtol(buf, 10, &temp))
451 return -EINVAL;
452
453 temp = SENSORS_LIMIT(temp, 0, 60000);
454
455 mutex_lock(&data->lock);
456 data->auto_update_interval = temp;
457 mutex_unlock(&data->lock);
458
459 return count;
460}
461
462static ssize_t show_num_temp_sensors(struct device *dev,
463 struct device_attribute *devattr,
464 char *buf)
465{
466 struct adt7470_data *data = adt7470_update_device(dev);
467 return sprintf(buf, "%d\n", data->num_temp_sensors);
468}
469
470static ssize_t set_num_temp_sensors(struct device *dev,
471 struct device_attribute *devattr,
472 const char *buf,
473 size_t count)
474{
475 struct i2c_client *client = to_i2c_client(dev);
476 struct adt7470_data *data = i2c_get_clientdata(client);
477 long temp;
478
479 if (strict_strtol(buf, 10, &temp))
480 return -EINVAL;
481
482 temp = SENSORS_LIMIT(temp, -1, 10);
483
484 mutex_lock(&data->lock);
485 data->num_temp_sensors = temp;
486 if (temp < 0)
487 data->temperatures_probed = 0;
488 mutex_unlock(&data->lock);
489
490 return count;
491}
492
493static ssize_t show_temp_min(struct device *dev,
494 struct device_attribute *devattr,
495 char *buf)
496{
497 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
498 struct adt7470_data *data = adt7470_update_device(dev);
499 return sprintf(buf, "%d\n", 1000 * data->temp_min[attr->index]);
500}
501
502static ssize_t set_temp_min(struct device *dev,
503 struct device_attribute *devattr,
504 const char *buf,
505 size_t count)
506{
507 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
508 struct i2c_client *client = to_i2c_client(dev);
509 struct adt7470_data *data = i2c_get_clientdata(client);
510 long temp;
511
512 if (strict_strtol(buf, 10, &temp))
513 return -EINVAL;
514
515 temp = DIV_ROUND_CLOSEST(temp, 1000);
516 temp = SENSORS_LIMIT(temp, 0, 255);
517
518 mutex_lock(&data->lock);
519 data->temp_min[attr->index] = temp;
520 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index),
521 temp);
522 mutex_unlock(&data->lock);
523
524 return count;
525}
526
527static ssize_t show_temp_max(struct device *dev,
528 struct device_attribute *devattr,
529 char *buf)
530{
531 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
532 struct adt7470_data *data = adt7470_update_device(dev);
533 return sprintf(buf, "%d\n", 1000 * data->temp_max[attr->index]);
534}
535
536static ssize_t set_temp_max(struct device *dev,
537 struct device_attribute *devattr,
538 const char *buf,
539 size_t count)
540{
541 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
542 struct i2c_client *client = to_i2c_client(dev);
543 struct adt7470_data *data = i2c_get_clientdata(client);
544 long temp;
545
546 if (strict_strtol(buf, 10, &temp))
547 return -EINVAL;
548
549 temp = DIV_ROUND_CLOSEST(temp, 1000);
550 temp = SENSORS_LIMIT(temp, 0, 255);
551
552 mutex_lock(&data->lock);
553 data->temp_max[attr->index] = temp;
554 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index),
555 temp);
556 mutex_unlock(&data->lock);
557
558 return count;
559}
560
561static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
562 char *buf)
563{
564 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
565 struct adt7470_data *data = adt7470_update_device(dev);
566 return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]);
567}
568
569static ssize_t show_alarm_mask(struct device *dev,
570 struct device_attribute *devattr,
571 char *buf)
572{
573 struct adt7470_data *data = adt7470_update_device(dev);
574
575 return sprintf(buf, "%x\n", data->alarms_mask);
576}
577
578static ssize_t show_fan_max(struct device *dev,
579 struct device_attribute *devattr,
580 char *buf)
581{
582 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
583 struct adt7470_data *data = adt7470_update_device(dev);
584
585 if (FAN_DATA_VALID(data->fan_max[attr->index]))
586 return sprintf(buf, "%d\n",
587 FAN_PERIOD_TO_RPM(data->fan_max[attr->index]));
588 else
589 return sprintf(buf, "0\n");
590}
591
592static ssize_t set_fan_max(struct device *dev,
593 struct device_attribute *devattr,
594 const char *buf, size_t count)
595{
596 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
597 struct i2c_client *client = to_i2c_client(dev);
598 struct adt7470_data *data = i2c_get_clientdata(client);
599 long temp;
600
601 if (strict_strtol(buf, 10, &temp) || !temp)
602 return -EINVAL;
603
604 temp = FAN_RPM_TO_PERIOD(temp);
605 temp = SENSORS_LIMIT(temp, 1, 65534);
606
607 mutex_lock(&data->lock);
608 data->fan_max[attr->index] = temp;
609 adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp);
610 mutex_unlock(&data->lock);
611
612 return count;
613}
614
615static ssize_t show_fan_min(struct device *dev,
616 struct device_attribute *devattr,
617 char *buf)
618{
619 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
620 struct adt7470_data *data = adt7470_update_device(dev);
621
622 if (FAN_DATA_VALID(data->fan_min[attr->index]))
623 return sprintf(buf, "%d\n",
624 FAN_PERIOD_TO_RPM(data->fan_min[attr->index]));
625 else
626 return sprintf(buf, "0\n");
627}
628
629static ssize_t set_fan_min(struct device *dev,
630 struct device_attribute *devattr,
631 const char *buf, size_t count)
632{
633 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
634 struct i2c_client *client = to_i2c_client(dev);
635 struct adt7470_data *data = i2c_get_clientdata(client);
636 long temp;
637
638 if (strict_strtol(buf, 10, &temp) || !temp)
639 return -EINVAL;
640
641 temp = FAN_RPM_TO_PERIOD(temp);
642 temp = SENSORS_LIMIT(temp, 1, 65534);
643
644 mutex_lock(&data->lock);
645 data->fan_min[attr->index] = temp;
646 adt7470_write_word_data(client, ADT7470_REG_FAN_MIN(attr->index), temp);
647 mutex_unlock(&data->lock);
648
649 return count;
650}
651
652static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
653 char *buf)
654{
655 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
656 struct adt7470_data *data = adt7470_update_device(dev);
657
658 if (FAN_DATA_VALID(data->fan[attr->index]))
659 return sprintf(buf, "%d\n",
660 FAN_PERIOD_TO_RPM(data->fan[attr->index]));
661 else
662 return sprintf(buf, "0\n");
663}
664
665static ssize_t show_force_pwm_max(struct device *dev,
666 struct device_attribute *devattr,
667 char *buf)
668{
669 struct adt7470_data *data = adt7470_update_device(dev);
670 return sprintf(buf, "%d\n", data->force_pwm_max);
671}
672
673static ssize_t set_force_pwm_max(struct device *dev,
674 struct device_attribute *devattr,
675 const char *buf,
676 size_t count)
677{
678 struct i2c_client *client = to_i2c_client(dev);
679 struct adt7470_data *data = i2c_get_clientdata(client);
680 long temp;
681 u8 reg;
682
683 if (strict_strtol(buf, 10, &temp))
684 return -EINVAL;
685
686 mutex_lock(&data->lock);
687 data->force_pwm_max = temp;
688 reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
689 if (temp)
690 reg |= ADT7470_FSPD_MASK;
691 else
692 reg &= ~ADT7470_FSPD_MASK;
693 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg);
694 mutex_unlock(&data->lock);
695
696 return count;
697}
698
699static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
700 char *buf)
701{
702 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
703 struct adt7470_data *data = adt7470_update_device(dev);
704 return sprintf(buf, "%d\n", data->pwm[attr->index]);
705}
706
707static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
708 const char *buf, size_t count)
709{
710 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
711 struct i2c_client *client = to_i2c_client(dev);
712 struct adt7470_data *data = i2c_get_clientdata(client);
713 long temp;
714
715 if (strict_strtol(buf, 10, &temp))
716 return -EINVAL;
717
718 temp = SENSORS_LIMIT(temp, 0, 255);
719
720 mutex_lock(&data->lock);
721 data->pwm[attr->index] = temp;
722 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(attr->index), temp);
723 mutex_unlock(&data->lock);
724
725 return count;
726}
727
728static ssize_t show_pwm_max(struct device *dev,
729 struct device_attribute *devattr,
730 char *buf)
731{
732 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
733 struct adt7470_data *data = adt7470_update_device(dev);
734 return sprintf(buf, "%d\n", data->pwm_max[attr->index]);
735}
736
737static ssize_t set_pwm_max(struct device *dev,
738 struct device_attribute *devattr,
739 const char *buf,
740 size_t count)
741{
742 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
743 struct i2c_client *client = to_i2c_client(dev);
744 struct adt7470_data *data = i2c_get_clientdata(client);
745 long temp;
746
747 if (strict_strtol(buf, 10, &temp))
748 return -EINVAL;
749
750 temp = SENSORS_LIMIT(temp, 0, 255);
751
752 mutex_lock(&data->lock);
753 data->pwm_max[attr->index] = temp;
754 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MAX(attr->index),
755 temp);
756 mutex_unlock(&data->lock);
757
758 return count;
759}
760
761static ssize_t show_pwm_min(struct device *dev,
762 struct device_attribute *devattr,
763 char *buf)
764{
765 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
766 struct adt7470_data *data = adt7470_update_device(dev);
767 return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
768}
769
770static ssize_t set_pwm_min(struct device *dev,
771 struct device_attribute *devattr,
772 const char *buf,
773 size_t count)
774{
775 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
776 struct i2c_client *client = to_i2c_client(dev);
777 struct adt7470_data *data = i2c_get_clientdata(client);
778 long temp;
779
780 if (strict_strtol(buf, 10, &temp))
781 return -EINVAL;
782
783 temp = SENSORS_LIMIT(temp, 0, 255);
784
785 mutex_lock(&data->lock);
786 data->pwm_min[attr->index] = temp;
787 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MIN(attr->index),
788 temp);
789 mutex_unlock(&data->lock);
790
791 return count;
792}
793
794static ssize_t show_pwm_tmax(struct device *dev,
795 struct device_attribute *devattr,
796 char *buf)
797{
798 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
799 struct adt7470_data *data = adt7470_update_device(dev);
800 /* the datasheet says that tmax = tmin + 20C */
801 return sprintf(buf, "%d\n", 1000 * (20 + data->pwm_tmin[attr->index]));
802}
803
804static ssize_t show_pwm_tmin(struct device *dev,
805 struct device_attribute *devattr,
806 char *buf)
807{
808 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
809 struct adt7470_data *data = adt7470_update_device(dev);
810 return sprintf(buf, "%d\n", 1000 * data->pwm_tmin[attr->index]);
811}
812
813static ssize_t set_pwm_tmin(struct device *dev,
814 struct device_attribute *devattr,
815 const char *buf,
816 size_t count)
817{
818 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
819 struct i2c_client *client = to_i2c_client(dev);
820 struct adt7470_data *data = i2c_get_clientdata(client);
821 long temp;
822
823 if (strict_strtol(buf, 10, &temp))
824 return -EINVAL;
825
826 temp = DIV_ROUND_CLOSEST(temp, 1000);
827 temp = SENSORS_LIMIT(temp, 0, 255);
828
829 mutex_lock(&data->lock);
830 data->pwm_tmin[attr->index] = temp;
831 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index),
832 temp);
833 mutex_unlock(&data->lock);
834
835 return count;
836}
837
838static ssize_t show_pwm_auto(struct device *dev,
839 struct device_attribute *devattr,
840 char *buf)
841{
842 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
843 struct adt7470_data *data = adt7470_update_device(dev);
844 return sprintf(buf, "%d\n", 1 + data->pwm_automatic[attr->index]);
845}
846
847static ssize_t set_pwm_auto(struct device *dev,
848 struct device_attribute *devattr,
849 const char *buf,
850 size_t count)
851{
852 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
853 struct i2c_client *client = to_i2c_client(dev);
854 struct adt7470_data *data = i2c_get_clientdata(client);
855 int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index);
856 int pwm_auto_reg_mask;
857 long temp;
858 u8 reg;
859
860 if (strict_strtol(buf, 10, &temp))
861 return -EINVAL;
862
863 if (attr->index % 2)
864 pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK;
865 else
866 pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK;
867
868 if (temp != 2 && temp != 1)
869 return -EINVAL;
870 temp--;
871
872 mutex_lock(&data->lock);
873 data->pwm_automatic[attr->index] = temp;
874 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
875 if (temp)
876 reg |= pwm_auto_reg_mask;
877 else
878 reg &= ~pwm_auto_reg_mask;
879 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
880 mutex_unlock(&data->lock);
881
882 return count;
883}
884
885static ssize_t show_pwm_auto_temp(struct device *dev,
886 struct device_attribute *devattr,
887 char *buf)
888{
889 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
890 struct adt7470_data *data = adt7470_update_device(dev);
891 u8 ctrl = data->pwm_auto_temp[attr->index];
892
893 if (ctrl)
894 return sprintf(buf, "%d\n", 1 << (ctrl - 1));
895 else
896 return sprintf(buf, "%d\n", ADT7470_PWM_ALL_TEMPS);
897}
898
899static int cvt_auto_temp(int input)
900{
901 if (input == ADT7470_PWM_ALL_TEMPS)
902 return 0;
903 if (input < 1 || !is_power_of_2(input))
904 return -EINVAL;
905 return ilog2(input) + 1;
906}
907
908static ssize_t set_pwm_auto_temp(struct device *dev,
909 struct device_attribute *devattr,
910 const char *buf,
911 size_t count)
912{
913 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
914 struct i2c_client *client = to_i2c_client(dev);
915 struct adt7470_data *data = i2c_get_clientdata(client);
916 int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index);
917 long temp;
918 u8 reg;
919
920 if (strict_strtol(buf, 10, &temp))
921 return -EINVAL;
922
923 temp = cvt_auto_temp(temp);
924 if (temp < 0)
925 return temp;
926
927 mutex_lock(&data->lock);
928 data->pwm_automatic[attr->index] = temp;
929 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
930
931 if (!(attr->index % 2)) {
932 reg &= 0xF;
933 reg |= (temp << 4) & 0xF0;
934 } else {
935 reg &= 0xF0;
936 reg |= temp & 0xF;
937 }
938
939 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
940 mutex_unlock(&data->lock);
941
942 return count;
943}
944
945static ssize_t show_alarm(struct device *dev,
946 struct device_attribute *devattr,
947 char *buf)
948{
949 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
950 struct adt7470_data *data = adt7470_update_device(dev);
951
952 if (data->alarm & attr->index)
953 return sprintf(buf, "1\n");
954 else
955 return sprintf(buf, "0\n");
956}
957
958static DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL);
959static DEVICE_ATTR(num_temp_sensors, S_IWUSR | S_IRUGO, show_num_temp_sensors,
960 set_num_temp_sensors);
961static DEVICE_ATTR(auto_update_interval, S_IWUSR | S_IRUGO,
962 show_auto_update_interval, set_auto_update_interval);
963
964static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
965 set_temp_max, 0);
966static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
967 set_temp_max, 1);
968static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
969 set_temp_max, 2);
970static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
971 set_temp_max, 3);
972static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_temp_max,
973 set_temp_max, 4);
974static SENSOR_DEVICE_ATTR(temp6_max, S_IWUSR | S_IRUGO, show_temp_max,
975 set_temp_max, 5);
976static SENSOR_DEVICE_ATTR(temp7_max, S_IWUSR | S_IRUGO, show_temp_max,
977 set_temp_max, 6);
978static SENSOR_DEVICE_ATTR(temp8_max, S_IWUSR | S_IRUGO, show_temp_max,
979 set_temp_max, 7);
980static SENSOR_DEVICE_ATTR(temp9_max, S_IWUSR | S_IRUGO, show_temp_max,
981 set_temp_max, 8);
982static SENSOR_DEVICE_ATTR(temp10_max, S_IWUSR | S_IRUGO, show_temp_max,
983 set_temp_max, 9);
984
985static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
986 set_temp_min, 0);
987static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
988 set_temp_min, 1);
989static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
990 set_temp_min, 2);
991static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
992 set_temp_min, 3);
993static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_temp_min,
994 set_temp_min, 4);
995static SENSOR_DEVICE_ATTR(temp6_min, S_IWUSR | S_IRUGO, show_temp_min,
996 set_temp_min, 5);
997static SENSOR_DEVICE_ATTR(temp7_min, S_IWUSR | S_IRUGO, show_temp_min,
998 set_temp_min, 6);
999static SENSOR_DEVICE_ATTR(temp8_min, S_IWUSR | S_IRUGO, show_temp_min,
1000 set_temp_min, 7);
1001static SENSOR_DEVICE_ATTR(temp9_min, S_IWUSR | S_IRUGO, show_temp_min,
1002 set_temp_min, 8);
1003static SENSOR_DEVICE_ATTR(temp10_min, S_IWUSR | S_IRUGO, show_temp_min,
1004 set_temp_min, 9);
1005
1006static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
1007static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
1008static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
1009static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
1010static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
1011static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5);
1012static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6);
1013static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
1014static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8);
1015static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9);
1016
1017static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
1018 ADT7470_R1T_ALARM);
1019static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
1020 ADT7470_R2T_ALARM);
1021static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
1022 ADT7470_R3T_ALARM);
1023static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
1024 ADT7470_R4T_ALARM);
1025static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
1026 ADT7470_R5T_ALARM);
1027static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
1028 ADT7470_R6T_ALARM);
1029static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO, show_alarm, NULL,
1030 ADT7470_R7T_ALARM);
1031static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO, show_alarm, NULL,
1032 ALARM2(ADT7470_R8T_ALARM));
1033static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO, show_alarm, NULL,
1034 ALARM2(ADT7470_R9T_ALARM));
1035static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO, show_alarm, NULL,
1036 ALARM2(ADT7470_R10T_ALARM));
1037
1038static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max,
1039 set_fan_max, 0);
1040static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max,
1041 set_fan_max, 1);
1042static SENSOR_DEVICE_ATTR(fan3_max, S_IWUSR | S_IRUGO, show_fan_max,
1043 set_fan_max, 2);
1044static SENSOR_DEVICE_ATTR(fan4_max, S_IWUSR | S_IRUGO, show_fan_max,
1045 set_fan_max, 3);
1046
1047static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
1048 set_fan_min, 0);
1049static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
1050 set_fan_min, 1);
1051static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
1052 set_fan_min, 2);
1053static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
1054 set_fan_min, 3);
1055
1056static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
1057static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
1058static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
1059static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
1060
1061static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
1062 ALARM2(ADT7470_FAN1_ALARM));
1063static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
1064 ALARM2(ADT7470_FAN2_ALARM));
1065static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
1066 ALARM2(ADT7470_FAN3_ALARM));
1067static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
1068 ALARM2(ADT7470_FAN4_ALARM));
1069
1070static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
1071 show_force_pwm_max, set_force_pwm_max, 0);
1072
1073static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
1074static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
1075static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
1076static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
1077
1078static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
1079 show_pwm_min, set_pwm_min, 0);
1080static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
1081 show_pwm_min, set_pwm_min, 1);
1082static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
1083 show_pwm_min, set_pwm_min, 2);
1084static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
1085 show_pwm_min, set_pwm_min, 3);
1086
1087static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
1088 show_pwm_max, set_pwm_max, 0);
1089static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
1090 show_pwm_max, set_pwm_max, 1);
1091static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
1092 show_pwm_max, set_pwm_max, 2);
1093static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
1094 show_pwm_max, set_pwm_max, 3);
1095
1096static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
1097 show_pwm_tmin, set_pwm_tmin, 0);
1098static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO,
1099 show_pwm_tmin, set_pwm_tmin, 1);
1100static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO,
1101 show_pwm_tmin, set_pwm_tmin, 2);
1102static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO,
1103 show_pwm_tmin, set_pwm_tmin, 3);
1104
1105static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1106 NULL, 0);
1107static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1108 NULL, 1);
1109static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1110 NULL, 2);
1111static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1112 NULL, 3);
1113
1114static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1115 set_pwm_auto, 0);
1116static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1117 set_pwm_auto, 1);
1118static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1119 set_pwm_auto, 2);
1120static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1121 set_pwm_auto, 3);
1122
1123static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
1124 show_pwm_auto_temp, set_pwm_auto_temp, 0);
1125static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
1126 show_pwm_auto_temp, set_pwm_auto_temp, 1);
1127static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
1128 show_pwm_auto_temp, set_pwm_auto_temp, 2);
1129static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
1130 show_pwm_auto_temp, set_pwm_auto_temp, 3);
1131
1132static struct attribute *adt7470_attr[] =
1133{
1134 &dev_attr_alarm_mask.attr,
1135 &dev_attr_num_temp_sensors.attr,
1136 &dev_attr_auto_update_interval.attr,
1137 &sensor_dev_attr_temp1_max.dev_attr.attr,
1138 &sensor_dev_attr_temp2_max.dev_attr.attr,
1139 &sensor_dev_attr_temp3_max.dev_attr.attr,
1140 &sensor_dev_attr_temp4_max.dev_attr.attr,
1141 &sensor_dev_attr_temp5_max.dev_attr.attr,
1142 &sensor_dev_attr_temp6_max.dev_attr.attr,
1143 &sensor_dev_attr_temp7_max.dev_attr.attr,
1144 &sensor_dev_attr_temp8_max.dev_attr.attr,
1145 &sensor_dev_attr_temp9_max.dev_attr.attr,
1146 &sensor_dev_attr_temp10_max.dev_attr.attr,
1147 &sensor_dev_attr_temp1_min.dev_attr.attr,
1148 &sensor_dev_attr_temp2_min.dev_attr.attr,
1149 &sensor_dev_attr_temp3_min.dev_attr.attr,
1150 &sensor_dev_attr_temp4_min.dev_attr.attr,
1151 &sensor_dev_attr_temp5_min.dev_attr.attr,
1152 &sensor_dev_attr_temp6_min.dev_attr.attr,
1153 &sensor_dev_attr_temp7_min.dev_attr.attr,
1154 &sensor_dev_attr_temp8_min.dev_attr.attr,
1155 &sensor_dev_attr_temp9_min.dev_attr.attr,
1156 &sensor_dev_attr_temp10_min.dev_attr.attr,
1157 &sensor_dev_attr_temp1_input.dev_attr.attr,
1158 &sensor_dev_attr_temp2_input.dev_attr.attr,
1159 &sensor_dev_attr_temp3_input.dev_attr.attr,
1160 &sensor_dev_attr_temp4_input.dev_attr.attr,
1161 &sensor_dev_attr_temp5_input.dev_attr.attr,
1162 &sensor_dev_attr_temp6_input.dev_attr.attr,
1163 &sensor_dev_attr_temp7_input.dev_attr.attr,
1164 &sensor_dev_attr_temp8_input.dev_attr.attr,
1165 &sensor_dev_attr_temp9_input.dev_attr.attr,
1166 &sensor_dev_attr_temp10_input.dev_attr.attr,
1167 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1168 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1169 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1170 &sensor_dev_attr_temp4_alarm.dev_attr.attr,
1171 &sensor_dev_attr_temp5_alarm.dev_attr.attr,
1172 &sensor_dev_attr_temp6_alarm.dev_attr.attr,
1173 &sensor_dev_attr_temp7_alarm.dev_attr.attr,
1174 &sensor_dev_attr_temp8_alarm.dev_attr.attr,
1175 &sensor_dev_attr_temp9_alarm.dev_attr.attr,
1176 &sensor_dev_attr_temp10_alarm.dev_attr.attr,
1177 &sensor_dev_attr_fan1_max.dev_attr.attr,
1178 &sensor_dev_attr_fan2_max.dev_attr.attr,
1179 &sensor_dev_attr_fan3_max.dev_attr.attr,
1180 &sensor_dev_attr_fan4_max.dev_attr.attr,
1181 &sensor_dev_attr_fan1_min.dev_attr.attr,
1182 &sensor_dev_attr_fan2_min.dev_attr.attr,
1183 &sensor_dev_attr_fan3_min.dev_attr.attr,
1184 &sensor_dev_attr_fan4_min.dev_attr.attr,
1185 &sensor_dev_attr_fan1_input.dev_attr.attr,
1186 &sensor_dev_attr_fan2_input.dev_attr.attr,
1187 &sensor_dev_attr_fan3_input.dev_attr.attr,
1188 &sensor_dev_attr_fan4_input.dev_attr.attr,
1189 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1190 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1191 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1192 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1193 &sensor_dev_attr_force_pwm_max.dev_attr.attr,
1194 &sensor_dev_attr_pwm1.dev_attr.attr,
1195 &sensor_dev_attr_pwm2.dev_attr.attr,
1196 &sensor_dev_attr_pwm3.dev_attr.attr,
1197 &sensor_dev_attr_pwm4.dev_attr.attr,
1198 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1199 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1200 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1201 &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr,
1202 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1203 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1204 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1205 &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr,
1206 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1207 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1208 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1209 &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,
1210 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1211 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1212 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1213 &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
1214 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1215 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1216 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1217 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
1218 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1219 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1220 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1221 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
1222 NULL
1223};
1224
1225/* Return 0 if detection is successful, -ENODEV otherwise */
1226static int adt7470_detect(struct i2c_client *client,
1227 struct i2c_board_info *info)
1228{
1229 struct i2c_adapter *adapter = client->adapter;
1230 int vendor, device, revision;
1231
1232 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1233 return -ENODEV;
1234
1235 vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR);
1236 if (vendor != ADT7470_VENDOR)
1237 return -ENODEV;
1238
1239 device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE);
1240 if (device != ADT7470_DEVICE)
1241 return -ENODEV;
1242
1243 revision = i2c_smbus_read_byte_data(client, ADT7470_REG_REVISION);
1244 if (revision != ADT7470_REVISION)
1245 return -ENODEV;
1246
1247 strlcpy(info->type, "adt7470", I2C_NAME_SIZE);
1248
1249 return 0;
1250}
1251
1252static int adt7470_probe(struct i2c_client *client,
1253 const struct i2c_device_id *id)
1254{
1255 struct adt7470_data *data;
1256 int err;
1257
1258 data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL);
1259 if (!data) {
1260 err = -ENOMEM;
1261 goto exit;
1262 }
1263
1264 data->num_temp_sensors = -1;
1265 data->auto_update_interval = AUTO_UPDATE_INTERVAL;
1266
1267 i2c_set_clientdata(client, data);
1268 mutex_init(&data->lock);
1269
1270 dev_info(&client->dev, "%s chip found\n", client->name);
1271
1272 /* Initialize the ADT7470 chip */
1273 adt7470_init_client(client);
1274
1275 /* Register sysfs hooks */
1276 data->attrs.attrs = adt7470_attr;
1277 if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
1278 goto exit_free;
1279
1280 data->hwmon_dev = hwmon_device_register(&client->dev);
1281 if (IS_ERR(data->hwmon_dev)) {
1282 err = PTR_ERR(data->hwmon_dev);
1283 goto exit_remove;
1284 }
1285
1286 init_completion(&data->auto_update_stop);
1287 data->auto_update = kthread_run(adt7470_update_thread, client,
1288 dev_name(data->hwmon_dev));
1289 if (IS_ERR(data->auto_update))
1290 goto exit_unregister;
1291
1292 return 0;
1293
1294exit_unregister:
1295 hwmon_device_unregister(data->hwmon_dev);
1296exit_remove:
1297 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1298exit_free:
1299 kfree(data);
1300exit:
1301 return err;
1302}
1303
1304static int adt7470_remove(struct i2c_client *client)
1305{
1306 struct adt7470_data *data = i2c_get_clientdata(client);
1307
1308 kthread_stop(data->auto_update);
1309 wait_for_completion(&data->auto_update_stop);
1310 hwmon_device_unregister(data->hwmon_dev);
1311 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1312 kfree(data);
1313 return 0;
1314}
1315
1316static int __init adt7470_init(void)
1317{
1318 return i2c_add_driver(&adt7470_driver);
1319}
1320
1321static void __exit adt7470_exit(void)
1322{
1323 i2c_del_driver(&adt7470_driver);
1324}
1325
1326MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
1327MODULE_DESCRIPTION("ADT7470 driver");
1328MODULE_LICENSE("GPL");
1329
1330module_init(adt7470_init);
1331module_exit(adt7470_exit);