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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / hwmon / adt7470.c
blob3445ce1cba81e730d2bc6c4a664587be6e644517
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
33 /* Addresses to scan */
34 static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
35
36 /* ADT7470 registers */
37 #define ADT7470_REG_BASE_ADDR 0x20
38 #define ADT7470_REG_TEMP_BASE_ADDR 0x20
39 #define ADT7470_REG_TEMP_MAX_ADDR 0x29
40 #define ADT7470_REG_FAN_BASE_ADDR 0x2A
41 #define ADT7470_REG_FAN_MAX_ADDR 0x31
42 #define ADT7470_REG_PWM_BASE_ADDR 0x32
43 #define ADT7470_REG_PWM_MAX_ADDR 0x35
44 #define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38
45 #define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B
46 #define ADT7470_REG_CFG 0x40
47 #define ADT7470_FSPD_MASK 0x04
48 #define ADT7470_REG_ALARM1 0x41
49 #define ADT7470_R1T_ALARM 0x01
50 #define ADT7470_R2T_ALARM 0x02
51 #define ADT7470_R3T_ALARM 0x04
52 #define ADT7470_R4T_ALARM 0x08
53 #define ADT7470_R5T_ALARM 0x10
54 #define ADT7470_R6T_ALARM 0x20
55 #define ADT7470_R7T_ALARM 0x40
56 #define ADT7470_OOL_ALARM 0x80
57 #define ADT7470_REG_ALARM2 0x42
58 #define ADT7470_R8T_ALARM 0x01
59 #define ADT7470_R9T_ALARM 0x02
60 #define ADT7470_R10T_ALARM 0x04
61 #define ADT7470_FAN1_ALARM 0x10
62 #define ADT7470_FAN2_ALARM 0x20
63 #define ADT7470_FAN3_ALARM 0x40
64 #define ADT7470_FAN4_ALARM 0x80
65 #define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44
66 #define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57
67 #define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58
68 #define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F
69 #define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60
70 #define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67
71 #define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68
72 #define ADT7470_REG_PWM12_CFG 0x68
73 #define ADT7470_PWM2_AUTO_MASK 0x40
74 #define ADT7470_PWM1_AUTO_MASK 0x80
75 #define ADT7470_PWM_AUTO_MASK 0xC0
76 #define ADT7470_REG_PWM34_CFG 0x69
77 #define ADT7470_PWM3_AUTO_MASK 0x40
78 #define ADT7470_PWM4_AUTO_MASK 0x80
79 #define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A
80 #define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D
81 #define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E
82 #define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71
83 #define ADT7470_REG_ACOUSTICS12 0x75
84 #define ADT7470_REG_ACOUSTICS34 0x76
85 #define ADT7470_REG_DEVICE 0x3D
86 #define ADT7470_REG_VENDOR 0x3E
87 #define ADT7470_REG_REVISION 0x3F
88 #define ADT7470_REG_ALARM1_MASK 0x72
89 #define ADT7470_REG_ALARM2_MASK 0x73
90 #define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C
91 #define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D
92 #define ADT7470_REG_MAX_ADDR 0x81
93
94 #define ADT7470_TEMP_COUNT 10
95 #define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x))
96 #define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2))
97 #define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \
98 ((x) * 2) + 1)
99
100 #define ADT7470_FAN_COUNT 4
101 #define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2))
102 #define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2))
103 #define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2))
104
105 #define ADT7470_PWM_COUNT 4
106 #define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x))
107 #define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x))
108 #define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x))
109 #define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
110 #define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2))
111 #define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \
112 ((x) / 2))
113
114 #define ALARM2(x) ((x) << 8)
115
116 #define ADT7470_VENDOR 0x41
117 #define ADT7470_DEVICE 0x70
118 /* datasheet only mentions a revision 2 */
119 #define ADT7470_REVISION 0x02
120
121 /* "all temps" according to hwmon sysfs interface spec */
122 #define ADT7470_PWM_ALL_TEMPS 0x3FF
123
124 /* How often do we reread sensors values? (In jiffies) */
125 #define SENSOR_REFRESH_INTERVAL (5 * HZ)
126
127 /* How often do we reread sensor limit values? (In jiffies) */
128 #define LIMIT_REFRESH_INTERVAL (60 * HZ)
129
130 /* Wait at least 200ms per sensor for 10 sensors */
131 #define TEMP_COLLECTION_TIME 2000
132
133 /* auto update thing won't fire more than every 2s */
134 #define AUTO_UPDATE_INTERVAL 2000
135
136 /* datasheet says to divide this number by the fan reading to get fan rpm */
137 #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
138 #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
139 #define FAN_PERIOD_INVALID 65535
140 #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
141
142 struct adt7470_data {
143 struct device *hwmon_dev;
144 struct attribute_group attrs;
145 struct mutex lock;
146 char sensors_valid;
147 char limits_valid;
148 unsigned long sensors_last_updated; /* In jiffies */
149 unsigned long limits_last_updated; /* In jiffies */
150
151 int num_temp_sensors; /* -1 = probe */
152 int temperatures_probed;
153
154 s8 temp[ADT7470_TEMP_COUNT];
155 s8 temp_min[ADT7470_TEMP_COUNT];
156 s8 temp_max[ADT7470_TEMP_COUNT];
157 u16 fan[ADT7470_FAN_COUNT];
158 u16 fan_min[ADT7470_FAN_COUNT];
159 u16 fan_max[ADT7470_FAN_COUNT];
160 u16 alarm;
161 u16 alarms_mask;
162 u8 force_pwm_max;
163 u8 pwm[ADT7470_PWM_COUNT];
164 u8 pwm_max[ADT7470_PWM_COUNT];
165 u8 pwm_automatic[ADT7470_PWM_COUNT];
166 u8 pwm_min[ADT7470_PWM_COUNT];
167 s8 pwm_tmin[ADT7470_PWM_COUNT];
168 u8 pwm_auto_temp[ADT7470_PWM_COUNT];
169
170 struct task_struct *auto_update;
171 struct completion auto_update_stop;
172 unsigned int auto_update_interval;
173 };
174
175 static int adt7470_probe(struct i2c_client *client,
176 const struct i2c_device_id *id);
177 static int adt7470_detect(struct i2c_client *client,
178 struct i2c_board_info *info);
179 static int adt7470_remove(struct i2c_client *client);
180
181 static const struct i2c_device_id adt7470_id[] = {
182 { "adt7470", 0 },
183 { }
184 };
185 MODULE_DEVICE_TABLE(i2c, adt7470_id);
186
187 static struct i2c_driver adt7470_driver = {
188 .class = I2C_CLASS_HWMON,
189 .driver = {
190 .name = "adt7470",
191 },
192 .probe = adt7470_probe,
193 .remove = adt7470_remove,
194 .id_table = adt7470_id,
195 .detect = adt7470_detect,
196 .address_list = normal_i2c,
197 };
198
199 /*
200 * 16-bit registers on the ADT7470 are low-byte first. The data sheet says
201 * that the low byte must be read before the high byte.
202 */
203 static inline int adt7470_read_word_data(struct i2c_client *client, u8 reg)
204 {
205 u16 foo;
206 foo = i2c_smbus_read_byte_data(client, reg);
207 foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
208 return foo;
209 }
210
211 static inline int adt7470_write_word_data(struct i2c_client *client, u8 reg,
212 u16 value)
213 {
214 return i2c_smbus_write_byte_data(client, reg, value & 0xFF)
215 && i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
216 }
217
218 static void adt7470_init_client(struct i2c_client *client)
219 {
220 int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
221
222 if (reg < 0) {
223 dev_err(&client->dev, "cannot read configuration register\n");
224 } else {
225 /* start monitoring (and do a self-test) */
226 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3);
227 }
228 }
229
230 /* Probe for temperature sensors. Assumes lock is held */
231 static int adt7470_read_temperatures(struct i2c_client *client,
232 struct adt7470_data *data)
233 {
234 unsigned long res;
235 int i;
236 u8 cfg, pwm[4], pwm_cfg[2];
237
238 /* save pwm[1-4] config register */
239 pwm_cfg[0] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(0));
240 pwm_cfg[1] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(2));
241
242 /* set manual pwm to whatever it is set to now */
243 for (i = 0; i < ADT7470_FAN_COUNT; i++)
244 pwm[i] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM(i));
245
246 /* put pwm in manual mode */
247 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0),
248 pwm_cfg[0] & ~(ADT7470_PWM_AUTO_MASK));
249 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2),
250 pwm_cfg[1] & ~(ADT7470_PWM_AUTO_MASK));
251
252 /* write pwm control to whatever it was */
253 for (i = 0; i < ADT7470_FAN_COUNT; i++)
254 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(i), pwm[i]);
255
256 /* start reading temperature sensors */
257 cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
258 cfg |= 0x80;
259 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
260
261 /* Delay is 200ms * number of temp sensors. */
262 res = msleep_interruptible((data->num_temp_sensors >= 0 ?
263 data->num_temp_sensors * 200 :
264 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 if (res) {
276 printk(KERN_ERR "ha ha, interrupted");
277 return -EAGAIN;
278 }
279
280 /* Only count fans if we have to */
281 if (data->num_temp_sensors >= 0)
282 return 0;
283
284 for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
285 data->temp[i] = i2c_smbus_read_byte_data(client,
286 ADT7470_TEMP_REG(i));
287 if (data->temp[i])
288 data->num_temp_sensors = i + 1;
289 }
290 data->temperatures_probed = 1;
291 return 0;
292 }
293
294 static int adt7470_update_thread(void *p)
295 {
296 struct i2c_client *client = p;
297 struct adt7470_data *data = i2c_get_clientdata(client);
298
299 while (!kthread_should_stop()) {
300 mutex_lock(&data->lock);
301 adt7470_read_temperatures(client, data);
302 mutex_unlock(&data->lock);
303 if (kthread_should_stop())
304 break;
305 msleep_interruptible(data->auto_update_interval);
306 }
307
308 complete_all(&data->auto_update_stop);
309 return 0;
310 }
311
312 static struct adt7470_data *adt7470_update_device(struct device *dev)
313 {
314 struct i2c_client *client = to_i2c_client(dev);
315 struct adt7470_data *data = i2c_get_clientdata(client);
316 unsigned long local_jiffies = jiffies;
317 u8 cfg;
318 int i;
319 int need_sensors = 1;
320 int need_limits = 1;
321
322 /*
323 * Figure out if we need to update the shadow registers.
324 * Lockless means that we may occasionally report out of
325 * date data.
326 */
327 if (time_before(local_jiffies, data->sensors_last_updated +
328 SENSOR_REFRESH_INTERVAL) &&
329 data->sensors_valid)
330 need_sensors = 0;
331
332 if (time_before(local_jiffies, data->limits_last_updated +
333 LIMIT_REFRESH_INTERVAL) &&
334 data->limits_valid)
335 need_limits = 0;
336
337 if (!need_sensors && !need_limits)
338 return data;
339
340 mutex_lock(&data->lock);
341 if (!need_sensors)
342 goto no_sensor_update;
343
344 if (!data->temperatures_probed)
345 adt7470_read_temperatures(client, data);
346 else
347 for (i = 0; i < ADT7470_TEMP_COUNT; i++)
348 data->temp[i] = i2c_smbus_read_byte_data(client,
349 ADT7470_TEMP_REG(i));
350
351 for (i = 0; i < ADT7470_FAN_COUNT; i++)
352 data->fan[i] = adt7470_read_word_data(client,
353 ADT7470_REG_FAN(i));
354
355 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
356 int reg;
357 int reg_mask;
358
359 data->pwm[i] = i2c_smbus_read_byte_data(client,
360 ADT7470_REG_PWM(i));
361
362 if (i % 2)
363 reg_mask = ADT7470_PWM2_AUTO_MASK;
364 else
365 reg_mask = ADT7470_PWM1_AUTO_MASK;
366
367 reg = ADT7470_REG_PWM_CFG(i);
368 if (i2c_smbus_read_byte_data(client, reg) & reg_mask)
369 data->pwm_automatic[i] = 1;
370 else
371 data->pwm_automatic[i] = 0;
372
373 reg = ADT7470_REG_PWM_AUTO_TEMP(i);
374 cfg = i2c_smbus_read_byte_data(client, reg);
375 if (!(i % 2))
376 data->pwm_auto_temp[i] = cfg >> 4;
377 else
378 data->pwm_auto_temp[i] = cfg & 0xF;
379 }
380
381 if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) &
382 ADT7470_FSPD_MASK)
383 data->force_pwm_max = 1;
384 else
385 data->force_pwm_max = 0;
386
387 data->alarm = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1);
388 if (data->alarm & ADT7470_OOL_ALARM)
389 data->alarm |= ALARM2(i2c_smbus_read_byte_data(client,
390 ADT7470_REG_ALARM2));
391 data->alarms_mask = adt7470_read_word_data(client,
392 ADT7470_REG_ALARM1_MASK);
393
394 data->sensors_last_updated = local_jiffies;
395 data->sensors_valid = 1;
396
397 no_sensor_update:
398 if (!need_limits)
399 goto out;
400
401 for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
402 data->temp_min[i] = i2c_smbus_read_byte_data(client,
403 ADT7470_TEMP_MIN_REG(i));
404 data->temp_max[i] = i2c_smbus_read_byte_data(client,
405 ADT7470_TEMP_MAX_REG(i));
406 }
407
408 for (i = 0; i < ADT7470_FAN_COUNT; i++) {
409 data->fan_min[i] = adt7470_read_word_data(client,
410 ADT7470_REG_FAN_MIN(i));
411 data->fan_max[i] = adt7470_read_word_data(client,
412 ADT7470_REG_FAN_MAX(i));
413 }
414
415 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
416 data->pwm_max[i] = i2c_smbus_read_byte_data(client,
417 ADT7470_REG_PWM_MAX(i));
418 data->pwm_min[i] = i2c_smbus_read_byte_data(client,
419 ADT7470_REG_PWM_MIN(i));
420 data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
421 ADT7470_REG_PWM_TMIN(i));
422 }
423
424 data->limits_last_updated = local_jiffies;
425 data->limits_valid = 1;
426
427 out:
428 mutex_unlock(&data->lock);
429 return data;
430 }
431
432 static ssize_t show_auto_update_interval(struct device *dev,
433 struct device_attribute *devattr,
434 char *buf)
435 {
436 struct adt7470_data *data = adt7470_update_device(dev);
437 return sprintf(buf, "%d\n", data->auto_update_interval);
438 }
439
440 static ssize_t set_auto_update_interval(struct device *dev,
441 struct device_attribute *devattr,
442 const char *buf,
443 size_t count)
444 {
445 struct i2c_client *client = to_i2c_client(dev);
446 struct adt7470_data *data = i2c_get_clientdata(client);
447 long temp;
448
449 if (strict_strtol(buf, 10, &temp))
450 return -EINVAL;
451
452 temp = SENSORS_LIMIT(temp, 0, 60000);
453
454 mutex_lock(&data->lock);
455 data->auto_update_interval = temp;
456 mutex_unlock(&data->lock);
457
458 return count;
459 }
460
461 static ssize_t show_num_temp_sensors(struct device *dev,
462 struct device_attribute *devattr,
463 char *buf)
464 {
465 struct adt7470_data *data = adt7470_update_device(dev);
466 return sprintf(buf, "%d\n", data->num_temp_sensors);
467 }
468
469 static ssize_t set_num_temp_sensors(struct device *dev,
470 struct device_attribute *devattr,
471 const char *buf,
472 size_t count)
473 {
474 struct i2c_client *client = to_i2c_client(dev);
475 struct adt7470_data *data = i2c_get_clientdata(client);
476 long temp;
477
478 if (strict_strtol(buf, 10, &temp))
479 return -EINVAL;
480
481 temp = SENSORS_LIMIT(temp, -1, 10);
482
483 mutex_lock(&data->lock);
484 data->num_temp_sensors = temp;
485 if (temp < 0)
486 data->temperatures_probed = 0;
487 mutex_unlock(&data->lock);
488
489 return count;
490 }
491
492 static ssize_t show_temp_min(struct device *dev,
493 struct device_attribute *devattr,
494 char *buf)
495 {
496 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
497 struct adt7470_data *data = adt7470_update_device(dev);
498 return sprintf(buf, "%d\n", 1000 * data->temp_min[attr->index]);
499 }
500
501 static ssize_t set_temp_min(struct device *dev,
502 struct device_attribute *devattr,
503 const char *buf,
504 size_t count)
505 {
506 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
507 struct i2c_client *client = to_i2c_client(dev);
508 struct adt7470_data *data = i2c_get_clientdata(client);
509 long temp;
510
511 if (strict_strtol(buf, 10, &temp))
512 return -EINVAL;
513
514 temp = DIV_ROUND_CLOSEST(temp, 1000);
515 temp = SENSORS_LIMIT(temp, 0, 255);
516
517 mutex_lock(&data->lock);
518 data->temp_min[attr->index] = temp;
519 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index),
520 temp);
521 mutex_unlock(&data->lock);
522
523 return count;
524 }
525
526 static ssize_t show_temp_max(struct device *dev,
527 struct device_attribute *devattr,
528 char *buf)
529 {
530 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
531 struct adt7470_data *data = adt7470_update_device(dev);
532 return sprintf(buf, "%d\n", 1000 * data->temp_max[attr->index]);
533 }
534
535 static ssize_t set_temp_max(struct device *dev,
536 struct device_attribute *devattr,
537 const char *buf,
538 size_t count)
539 {
540 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
541 struct i2c_client *client = to_i2c_client(dev);
542 struct adt7470_data *data = i2c_get_clientdata(client);
543 long temp;
544
545 if (strict_strtol(buf, 10, &temp))
546 return -EINVAL;
547
548 temp = DIV_ROUND_CLOSEST(temp, 1000);
549 temp = SENSORS_LIMIT(temp, 0, 255);
550
551 mutex_lock(&data->lock);
552 data->temp_max[attr->index] = temp;
553 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index),
554 temp);
555 mutex_unlock(&data->lock);
556
557 return count;
558 }
559
560 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
561 char *buf)
562 {
563 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
564 struct adt7470_data *data = adt7470_update_device(dev);
565 return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]);
566 }
567
568 static ssize_t show_alarm_mask(struct device *dev,
569 struct device_attribute *devattr,
570 char *buf)
571 {
572 struct adt7470_data *data = adt7470_update_device(dev);
573
574 return sprintf(buf, "%x\n", data->alarms_mask);
575 }
576
577 static ssize_t show_fan_max(struct device *dev,
578 struct device_attribute *devattr,
579 char *buf)
580 {
581 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
582 struct adt7470_data *data = adt7470_update_device(dev);
583
584 if (FAN_DATA_VALID(data->fan_max[attr->index]))
585 return sprintf(buf, "%d\n",
586 FAN_PERIOD_TO_RPM(data->fan_max[attr->index]));
587 else
588 return sprintf(buf, "0\n");
589 }
590
591 static ssize_t set_fan_max(struct device *dev,
592 struct device_attribute *devattr,
593 const char *buf, size_t count)
594 {
595 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
596 struct i2c_client *client = to_i2c_client(dev);
597 struct adt7470_data *data = i2c_get_clientdata(client);
598 long temp;
599
600 if (strict_strtol(buf, 10, &temp) || !temp)
601 return -EINVAL;
602
603 temp = FAN_RPM_TO_PERIOD(temp);
604 temp = SENSORS_LIMIT(temp, 1, 65534);
605
606 mutex_lock(&data->lock);
607 data->fan_max[attr->index] = temp;
608 adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp);
609 mutex_unlock(&data->lock);
610
611 return count;
612 }
613
614 static ssize_t show_fan_min(struct device *dev,
615 struct device_attribute *devattr,
616 char *buf)
617 {
618 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
619 struct adt7470_data *data = adt7470_update_device(dev);
620
621 if (FAN_DATA_VALID(data->fan_min[attr->index]))
622 return sprintf(buf, "%d\n",
623 FAN_PERIOD_TO_RPM(data->fan_min[attr->index]));
624 else
625 return sprintf(buf, "0\n");
626 }
627
628 static ssize_t set_fan_min(struct device *dev,
629 struct device_attribute *devattr,
630 const char *buf, size_t count)
631 {
632 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
633 struct i2c_client *client = to_i2c_client(dev);
634 struct adt7470_data *data = i2c_get_clientdata(client);
635 long temp;
636
637 if (strict_strtol(buf, 10, &temp) || !temp)
638 return -EINVAL;
639
640 temp = FAN_RPM_TO_PERIOD(temp);
641 temp = SENSORS_LIMIT(temp, 1, 65534);
642
643 mutex_lock(&data->lock);
644 data->fan_min[attr->index] = temp;
645 adt7470_write_word_data(client, ADT7470_REG_FAN_MIN(attr->index), temp);
646 mutex_unlock(&data->lock);
647
648 return count;
649 }
650
651 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
652 char *buf)
653 {
654 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
655 struct adt7470_data *data = adt7470_update_device(dev);
656
657 if (FAN_DATA_VALID(data->fan[attr->index]))
658 return sprintf(buf, "%d\n",
659 FAN_PERIOD_TO_RPM(data->fan[attr->index]));
660 else
661 return sprintf(buf, "0\n");
662 }
663
664 static ssize_t show_force_pwm_max(struct device *dev,
665 struct device_attribute *devattr,
666 char *buf)
667 {
668 struct adt7470_data *data = adt7470_update_device(dev);
669 return sprintf(buf, "%d\n", data->force_pwm_max);
670 }
671
672 static ssize_t set_force_pwm_max(struct device *dev,
673 struct device_attribute *devattr,
674 const char *buf,
675 size_t count)
676 {
677 struct i2c_client *client = to_i2c_client(dev);
678 struct adt7470_data *data = i2c_get_clientdata(client);
679 long temp;
680 u8 reg;
681
682 if (strict_strtol(buf, 10, &temp))
683 return -EINVAL;
684
685 mutex_lock(&data->lock);
686 data->force_pwm_max = temp;
687 reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
688 if (temp)
689 reg |= ADT7470_FSPD_MASK;
690 else
691 reg &= ~ADT7470_FSPD_MASK;
692 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg);
693 mutex_unlock(&data->lock);
694
695 return count;
696 }
697
698 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
699 char *buf)
700 {
701 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
702 struct adt7470_data *data = adt7470_update_device(dev);
703 return sprintf(buf, "%d\n", data->pwm[attr->index]);
704 }
705
706 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
707 const char *buf, size_t count)
708 {
709 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
710 struct i2c_client *client = to_i2c_client(dev);
711 struct adt7470_data *data = i2c_get_clientdata(client);
712 long temp;
713
714 if (strict_strtol(buf, 10, &temp))
715 return -EINVAL;
716
717 temp = SENSORS_LIMIT(temp, 0, 255);
718
719 mutex_lock(&data->lock);
720 data->pwm[attr->index] = temp;
721 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(attr->index), temp);
722 mutex_unlock(&data->lock);
723
724 return count;
725 }
726
727 static ssize_t show_pwm_max(struct device *dev,
728 struct device_attribute *devattr,
729 char *buf)
730 {
731 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
732 struct adt7470_data *data = adt7470_update_device(dev);
733 return sprintf(buf, "%d\n", data->pwm_max[attr->index]);
734 }
735
736 static ssize_t set_pwm_max(struct device *dev,
737 struct device_attribute *devattr,
738 const char *buf,
739 size_t count)
740 {
741 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
742 struct i2c_client *client = to_i2c_client(dev);
743 struct adt7470_data *data = i2c_get_clientdata(client);
744 long temp;
745
746 if (strict_strtol(buf, 10, &temp))
747 return -EINVAL;
748
749 temp = SENSORS_LIMIT(temp, 0, 255);
750
751 mutex_lock(&data->lock);
752 data->pwm_max[attr->index] = temp;
753 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MAX(attr->index),
754 temp);
755 mutex_unlock(&data->lock);
756
757 return count;
758 }
759
760 static ssize_t show_pwm_min(struct device *dev,
761 struct device_attribute *devattr,
762 char *buf)
763 {
764 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
765 struct adt7470_data *data = adt7470_update_device(dev);
766 return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
767 }
768
769 static ssize_t set_pwm_min(struct device *dev,
770 struct device_attribute *devattr,
771 const char *buf,
772 size_t count)
773 {
774 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
775 struct i2c_client *client = to_i2c_client(dev);
776 struct adt7470_data *data = i2c_get_clientdata(client);
777 long temp;
778
779 if (strict_strtol(buf, 10, &temp))
780 return -EINVAL;
781
782 temp = SENSORS_LIMIT(temp, 0, 255);
783
784 mutex_lock(&data->lock);
785 data->pwm_min[attr->index] = temp;
786 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MIN(attr->index),
787 temp);
788 mutex_unlock(&data->lock);
789
790 return count;
791 }
792
793 static ssize_t show_pwm_tmax(struct device *dev,
794 struct device_attribute *devattr,
795 char *buf)
796 {
797 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
798 struct adt7470_data *data = adt7470_update_device(dev);
799 /* the datasheet says that tmax = tmin + 20C */
800 return sprintf(buf, "%d\n", 1000 * (20 + data->pwm_tmin[attr->index]));
801 }
802
803 static ssize_t show_pwm_tmin(struct device *dev,
804 struct device_attribute *devattr,
805 char *buf)
806 {
807 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
808 struct adt7470_data *data = adt7470_update_device(dev);
809 return sprintf(buf, "%d\n", 1000 * data->pwm_tmin[attr->index]);
810 }
811
812 static ssize_t set_pwm_tmin(struct device *dev,
813 struct device_attribute *devattr,
814 const char *buf,
815 size_t count)
816 {
817 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
818 struct i2c_client *client = to_i2c_client(dev);
819 struct adt7470_data *data = i2c_get_clientdata(client);
820 long temp;
821
822 if (strict_strtol(buf, 10, &temp))
823 return -EINVAL;
824
825 temp = DIV_ROUND_CLOSEST(temp, 1000);
826 temp = SENSORS_LIMIT(temp, 0, 255);
827
828 mutex_lock(&data->lock);
829 data->pwm_tmin[attr->index] = temp;
830 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index),
831 temp);
832 mutex_unlock(&data->lock);
833
834 return count;
835 }
836
837 static ssize_t show_pwm_auto(struct device *dev,
838 struct device_attribute *devattr,
839 char *buf)
840 {
841 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
842 struct adt7470_data *data = adt7470_update_device(dev);
843 return sprintf(buf, "%d\n", 1 + data->pwm_automatic[attr->index]);
844 }
845
846 static ssize_t set_pwm_auto(struct device *dev,
847 struct device_attribute *devattr,
848 const char *buf,
849 size_t count)
850 {
851 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
852 struct i2c_client *client = to_i2c_client(dev);
853 struct adt7470_data *data = i2c_get_clientdata(client);
854 int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index);
855 int pwm_auto_reg_mask;
856 long temp;
857 u8 reg;
858
859 if (strict_strtol(buf, 10, &temp))
860 return -EINVAL;
861
862 if (attr->index % 2)
863 pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK;
864 else
865 pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK;
866
867 if (temp != 2 && temp != 1)
868 return -EINVAL;
869 temp--;
870
871 mutex_lock(&data->lock);
872 data->pwm_automatic[attr->index] = temp;
873 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
874 if (temp)
875 reg |= pwm_auto_reg_mask;
876 else
877 reg &= ~pwm_auto_reg_mask;
878 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
879 mutex_unlock(&data->lock);
880
881 return count;
882 }
883
884 static ssize_t show_pwm_auto_temp(struct device *dev,
885 struct device_attribute *devattr,
886 char *buf)
887 {
888 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
889 struct adt7470_data *data = adt7470_update_device(dev);
890 u8 ctrl = data->pwm_auto_temp[attr->index];
891
892 if (ctrl)
893 return sprintf(buf, "%d\n", 1 << (ctrl - 1));
894 else
895 return sprintf(buf, "%d\n", ADT7470_PWM_ALL_TEMPS);
896 }
897
898 static int cvt_auto_temp(int input)
899 {
900 if (input == ADT7470_PWM_ALL_TEMPS)
901 return 0;
902 if (input < 1 || !is_power_of_2(input))
903 return -EINVAL;
904 return ilog2(input) + 1;
905 }
906
907 static ssize_t set_pwm_auto_temp(struct device *dev,
908 struct device_attribute *devattr,
909 const char *buf,
910 size_t count)
911 {
912 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
913 struct i2c_client *client = to_i2c_client(dev);
914 struct adt7470_data *data = i2c_get_clientdata(client);
915 int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index);
916 long temp;
917 u8 reg;
918
919 if (strict_strtol(buf, 10, &temp))
920 return -EINVAL;
921
922 temp = cvt_auto_temp(temp);
923 if (temp < 0)
924 return temp;
925
926 mutex_lock(&data->lock);
927 data->pwm_automatic[attr->index] = temp;
928 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
929
930 if (!(attr->index % 2)) {
931 reg &= 0xF;
932 reg |= (temp << 4) & 0xF0;
933 } else {
934 reg &= 0xF0;
935 reg |= temp & 0xF;
936 }
937
938 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
939 mutex_unlock(&data->lock);
940
941 return count;
942 }
943
944 static ssize_t show_alarm(struct device *dev,
945 struct device_attribute *devattr,
946 char *buf)
947 {
948 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
949 struct adt7470_data *data = adt7470_update_device(dev);
950
951 if (data->alarm & attr->index)
952 return sprintf(buf, "1\n");
953 else
954 return sprintf(buf, "0\n");
955 }
956
957 static DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL);
958 static DEVICE_ATTR(num_temp_sensors, S_IWUSR | S_IRUGO, show_num_temp_sensors,
959 set_num_temp_sensors);
960 static DEVICE_ATTR(auto_update_interval, S_IWUSR | S_IRUGO,
961 show_auto_update_interval, set_auto_update_interval);
962
963 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
964 set_temp_max, 0);
965 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
966 set_temp_max, 1);
967 static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
968 set_temp_max, 2);
969 static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
970 set_temp_max, 3);
971 static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_temp_max,
972 set_temp_max, 4);
973 static SENSOR_DEVICE_ATTR(temp6_max, S_IWUSR | S_IRUGO, show_temp_max,
974 set_temp_max, 5);
975 static SENSOR_DEVICE_ATTR(temp7_max, S_IWUSR | S_IRUGO, show_temp_max,
976 set_temp_max, 6);
977 static SENSOR_DEVICE_ATTR(temp8_max, S_IWUSR | S_IRUGO, show_temp_max,
978 set_temp_max, 7);
979 static SENSOR_DEVICE_ATTR(temp9_max, S_IWUSR | S_IRUGO, show_temp_max,
980 set_temp_max, 8);
981 static SENSOR_DEVICE_ATTR(temp10_max, S_IWUSR | S_IRUGO, show_temp_max,
982 set_temp_max, 9);
983
984 static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
985 set_temp_min, 0);
986 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
987 set_temp_min, 1);
988 static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
989 set_temp_min, 2);
990 static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
991 set_temp_min, 3);
992 static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_temp_min,
993 set_temp_min, 4);
994 static SENSOR_DEVICE_ATTR(temp6_min, S_IWUSR | S_IRUGO, show_temp_min,
995 set_temp_min, 5);
996 static SENSOR_DEVICE_ATTR(temp7_min, S_IWUSR | S_IRUGO, show_temp_min,
997 set_temp_min, 6);
998 static SENSOR_DEVICE_ATTR(temp8_min, S_IWUSR | S_IRUGO, show_temp_min,
999 set_temp_min, 7);
1000 static SENSOR_DEVICE_ATTR(temp9_min, S_IWUSR | S_IRUGO, show_temp_min,
1001 set_temp_min, 8);
1002 static SENSOR_DEVICE_ATTR(temp10_min, S_IWUSR | S_IRUGO, show_temp_min,
1003 set_temp_min, 9);
1004
1005 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
1006 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
1007 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
1008 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
1009 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
1010 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5);
1011 static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6);
1012 static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
1013 static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8);
1014 static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9);
1015
1016 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
1017 ADT7470_R1T_ALARM);
1018 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
1019 ADT7470_R2T_ALARM);
1020 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
1021 ADT7470_R3T_ALARM);
1022 static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
1023 ADT7470_R4T_ALARM);
1024 static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
1025 ADT7470_R5T_ALARM);
1026 static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
1027 ADT7470_R6T_ALARM);
1028 static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO, show_alarm, NULL,
1029 ADT7470_R7T_ALARM);
1030 static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO, show_alarm, NULL,
1031 ALARM2(ADT7470_R8T_ALARM));
1032 static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO, show_alarm, NULL,
1033 ALARM2(ADT7470_R9T_ALARM));
1034 static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO, show_alarm, NULL,
1035 ALARM2(ADT7470_R10T_ALARM));
1036
1037 static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max,
1038 set_fan_max, 0);
1039 static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max,
1040 set_fan_max, 1);
1041 static SENSOR_DEVICE_ATTR(fan3_max, S_IWUSR | S_IRUGO, show_fan_max,
1042 set_fan_max, 2);
1043 static SENSOR_DEVICE_ATTR(fan4_max, S_IWUSR | S_IRUGO, show_fan_max,
1044 set_fan_max, 3);
1045
1046 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
1047 set_fan_min, 0);
1048 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
1049 set_fan_min, 1);
1050 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
1051 set_fan_min, 2);
1052 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
1053 set_fan_min, 3);
1054
1055 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
1056 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
1057 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
1058 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
1059
1060 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
1061 ALARM2(ADT7470_FAN1_ALARM));
1062 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
1063 ALARM2(ADT7470_FAN2_ALARM));
1064 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
1065 ALARM2(ADT7470_FAN3_ALARM));
1066 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
1067 ALARM2(ADT7470_FAN4_ALARM));
1068
1069 static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
1070 show_force_pwm_max, set_force_pwm_max, 0);
1071
1072 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
1073 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
1074 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
1075 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
1076
1077 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
1078 show_pwm_min, set_pwm_min, 0);
1079 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
1080 show_pwm_min, set_pwm_min, 1);
1081 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
1082 show_pwm_min, set_pwm_min, 2);
1083 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
1084 show_pwm_min, set_pwm_min, 3);
1085
1086 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
1087 show_pwm_max, set_pwm_max, 0);
1088 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
1089 show_pwm_max, set_pwm_max, 1);
1090 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
1091 show_pwm_max, set_pwm_max, 2);
1092 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
1093 show_pwm_max, set_pwm_max, 3);
1094
1095 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
1096 show_pwm_tmin, set_pwm_tmin, 0);
1097 static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO,
1098 show_pwm_tmin, set_pwm_tmin, 1);
1099 static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO,
1100 show_pwm_tmin, set_pwm_tmin, 2);
1101 static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO,
1102 show_pwm_tmin, set_pwm_tmin, 3);
1103
1104 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1105 NULL, 0);
1106 static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1107 NULL, 1);
1108 static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1109 NULL, 2);
1110 static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IRUGO, show_pwm_tmax,
1111 NULL, 3);
1112
1113 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1114 set_pwm_auto, 0);
1115 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1116 set_pwm_auto, 1);
1117 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1118 set_pwm_auto, 2);
1119 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
1120 set_pwm_auto, 3);
1121
1122 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
1123 show_pwm_auto_temp, set_pwm_auto_temp, 0);
1124 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
1125 show_pwm_auto_temp, set_pwm_auto_temp, 1);
1126 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
1127 show_pwm_auto_temp, set_pwm_auto_temp, 2);
1128 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
1129 show_pwm_auto_temp, set_pwm_auto_temp, 3);
1130
1131 static struct attribute *adt7470_attr[] =
1132 {
1133 &dev_attr_alarm_mask.attr,
1134 &dev_attr_num_temp_sensors.attr,
1135 &dev_attr_auto_update_interval.attr,
1136 &sensor_dev_attr_temp1_max.dev_attr.attr,
1137 &sensor_dev_attr_temp2_max.dev_attr.attr,
1138 &sensor_dev_attr_temp3_max.dev_attr.attr,
1139 &sensor_dev_attr_temp4_max.dev_attr.attr,
1140 &sensor_dev_attr_temp5_max.dev_attr.attr,
1141 &sensor_dev_attr_temp6_max.dev_attr.attr,
1142 &sensor_dev_attr_temp7_max.dev_attr.attr,
1143 &sensor_dev_attr_temp8_max.dev_attr.attr,
1144 &sensor_dev_attr_temp9_max.dev_attr.attr,
1145 &sensor_dev_attr_temp10_max.dev_attr.attr,
1146 &sensor_dev_attr_temp1_min.dev_attr.attr,
1147 &sensor_dev_attr_temp2_min.dev_attr.attr,
1148 &sensor_dev_attr_temp3_min.dev_attr.attr,
1149 &sensor_dev_attr_temp4_min.dev_attr.attr,
1150 &sensor_dev_attr_temp5_min.dev_attr.attr,
1151 &sensor_dev_attr_temp6_min.dev_attr.attr,
1152 &sensor_dev_attr_temp7_min.dev_attr.attr,
1153 &sensor_dev_attr_temp8_min.dev_attr.attr,
1154 &sensor_dev_attr_temp9_min.dev_attr.attr,
1155 &sensor_dev_attr_temp10_min.dev_attr.attr,
1156 &sensor_dev_attr_temp1_input.dev_attr.attr,
1157 &sensor_dev_attr_temp2_input.dev_attr.attr,
1158 &sensor_dev_attr_temp3_input.dev_attr.attr,
1159 &sensor_dev_attr_temp4_input.dev_attr.attr,
1160 &sensor_dev_attr_temp5_input.dev_attr.attr,
1161 &sensor_dev_attr_temp6_input.dev_attr.attr,
1162 &sensor_dev_attr_temp7_input.dev_attr.attr,
1163 &sensor_dev_attr_temp8_input.dev_attr.attr,
1164 &sensor_dev_attr_temp9_input.dev_attr.attr,
1165 &sensor_dev_attr_temp10_input.dev_attr.attr,
1166 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1167 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1168 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1169 &sensor_dev_attr_temp4_alarm.dev_attr.attr,
1170 &sensor_dev_attr_temp5_alarm.dev_attr.attr,
1171 &sensor_dev_attr_temp6_alarm.dev_attr.attr,
1172 &sensor_dev_attr_temp7_alarm.dev_attr.attr,
1173 &sensor_dev_attr_temp8_alarm.dev_attr.attr,
1174 &sensor_dev_attr_temp9_alarm.dev_attr.attr,
1175 &sensor_dev_attr_temp10_alarm.dev_attr.attr,
1176 &sensor_dev_attr_fan1_max.dev_attr.attr,
1177 &sensor_dev_attr_fan2_max.dev_attr.attr,
1178 &sensor_dev_attr_fan3_max.dev_attr.attr,
1179 &sensor_dev_attr_fan4_max.dev_attr.attr,
1180 &sensor_dev_attr_fan1_min.dev_attr.attr,
1181 &sensor_dev_attr_fan2_min.dev_attr.attr,
1182 &sensor_dev_attr_fan3_min.dev_attr.attr,
1183 &sensor_dev_attr_fan4_min.dev_attr.attr,
1184 &sensor_dev_attr_fan1_input.dev_attr.attr,
1185 &sensor_dev_attr_fan2_input.dev_attr.attr,
1186 &sensor_dev_attr_fan3_input.dev_attr.attr,
1187 &sensor_dev_attr_fan4_input.dev_attr.attr,
1188 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1189 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1190 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1191 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1192 &sensor_dev_attr_force_pwm_max.dev_attr.attr,
1193 &sensor_dev_attr_pwm1.dev_attr.attr,
1194 &sensor_dev_attr_pwm2.dev_attr.attr,
1195 &sensor_dev_attr_pwm3.dev_attr.attr,
1196 &sensor_dev_attr_pwm4.dev_attr.attr,
1197 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1198 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1199 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1200 &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr,
1201 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1202 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1203 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1204 &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr,
1205 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1206 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1207 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1208 &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,
1209 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1210 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1211 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1212 &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
1213 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1214 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1215 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1216 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
1217 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1218 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1219 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1220 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
1221 NULL
1222 };
1223
1224 /* Return 0 if detection is successful, -ENODEV otherwise */
1225 static int adt7470_detect(struct i2c_client *client,
1226 struct i2c_board_info *info)
1227 {
1228 struct i2c_adapter *adapter = client->adapter;
1229 int vendor, device, revision;
1230
1231 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1232 return -ENODEV;
1233
1234 vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR);
1235 if (vendor != ADT7470_VENDOR)
1236 return -ENODEV;
1237
1238 device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE);
1239 if (device != ADT7470_DEVICE)
1240 return -ENODEV;
1241
1242 revision = i2c_smbus_read_byte_data(client, ADT7470_REG_REVISION);
1243 if (revision != ADT7470_REVISION)
1244 return -ENODEV;
1245
1246 strlcpy(info->type, "adt7470", I2C_NAME_SIZE);
1247
1248 return 0;
1249 }
1250
1251 static int adt7470_probe(struct i2c_client *client,
1252 const struct i2c_device_id *id)
1253 {
1254 struct adt7470_data *data;
1255 int err;
1256
1257 data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL);
1258 if (!data) {
1259 err = -ENOMEM;
1260 goto exit;
1261 }
1262
1263 data->num_temp_sensors = -1;
1264 data->auto_update_interval = AUTO_UPDATE_INTERVAL;
1265
1266 i2c_set_clientdata(client, data);
1267 mutex_init(&data->lock);
1268
1269 dev_info(&client->dev, "%s chip found\n", client->name);
1270
1271 /* Initialize the ADT7470 chip */
1272 adt7470_init_client(client);
1273
1274 /* Register sysfs hooks */
1275 data->attrs.attrs = adt7470_attr;
1276 if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
1277 goto exit_free;
1278
1279 data->hwmon_dev = hwmon_device_register(&client->dev);
1280 if (IS_ERR(data->hwmon_dev)) {
1281 err = PTR_ERR(data->hwmon_dev);
1282 goto exit_remove;
1283 }
1284
1285 init_completion(&data->auto_update_stop);
1286 data->auto_update = kthread_run(adt7470_update_thread, client,
1287 dev_name(data->hwmon_dev));
1288 if (IS_ERR(data->auto_update))
1289 goto exit_unregister;
1290
1291 return 0;
1292
1293 exit_unregister:
1294 hwmon_device_unregister(data->hwmon_dev);
1295 exit_remove:
1296 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1297 exit_free:
1298 kfree(data);
1299 exit:
1300 return err;
1301 }
1302
1303 static int adt7470_remove(struct i2c_client *client)
1304 {
1305 struct adt7470_data *data = i2c_get_clientdata(client);
1306
1307 kthread_stop(data->auto_update);
1308 wait_for_completion(&data->auto_update_stop);
1309 hwmon_device_unregister(data->hwmon_dev);
1310 sysfs_remove_group(&client->dev.kobj, &data->attrs);
1311 kfree(data);
1312 return 0;
1313 }
1314
1315 static int __init adt7470_init(void)
1316 {
1317 return i2c_add_driver(&adt7470_driver);
1318 }
1319
1320 static void __exit adt7470_exit(void)
1321 {
1322 i2c_del_driver(&adt7470_driver);
1323 }
1324
1325 MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
1326 MODULE_DESCRIPTION("ADT7470 driver");
1327 MODULE_LICENSE("GPL");
1328
1329 module_init(adt7470_init);
1330 module_exit(adt7470_exit);