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adt74{62, 70, 73}: Use DIV_ROUND_CLOSEST for rounded division
[linux-2.6-block.git] / drivers / hwmon / adt7470.c
CommitLineData
6f9703d0
DW		 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 */
25e9c86d 33static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
6f9703d0
DW		 34
35/* Insmod parameters */
36I2C_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
fe03f28c
DW		 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
6f9703d0 59#define ADT7470_REG_ALARM2 0x42
fe03f28c
DW		 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
6f9703d0
DW		 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_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
fe03f28c
DW		 115#define ALARM2(x) ((x) << 8)
116
6f9703d0
DW		 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/* sleep 1s while gathering temperature data */
132#define TEMP_COLLECTION_TIME 1000
133
6f9703d0
DW		 134/* datasheet says to divide this number by the fan reading to get fan rpm */
135#define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
136#define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
137#define FAN_PERIOD_INVALID 65535
138#define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
139
140struct adt7470_data {
1beeffe4 141 struct device *hwmon_dev;
6f9703d0
DW		 142 struct attribute_group attrs;
143 struct mutex lock;
144 char sensors_valid;
145 char limits_valid;
146 unsigned long sensors_last_updated; /* In jiffies */
147 unsigned long limits_last_updated; /* In jiffies */
148
149 s8 temp[ADT7470_TEMP_COUNT];
150 s8 temp_min[ADT7470_TEMP_COUNT];
151 s8 temp_max[ADT7470_TEMP_COUNT];
152 u16 fan[ADT7470_FAN_COUNT];
153 u16 fan_min[ADT7470_FAN_COUNT];
154 u16 fan_max[ADT7470_FAN_COUNT];
fe03f28c
DW		 155 u16 alarm;
156 u16 alarms_mask;
6f9703d0
DW		 157 u8 force_pwm_max;
158 u8 pwm[ADT7470_PWM_COUNT];
159 u8 pwm_max[ADT7470_PWM_COUNT];
160 u8 pwm_automatic[ADT7470_PWM_COUNT];
161 u8 pwm_min[ADT7470_PWM_COUNT];
162 s8 pwm_tmin[ADT7470_PWM_COUNT];
163 u8 pwm_auto_temp[ADT7470_PWM_COUNT];
164};
165
008f1ca5
JD		 166static int adt7470_probe(struct i2c_client *client,
167 const struct i2c_device_id *id);
168static int adt7470_detect(struct i2c_client *client, int kind,
169 struct i2c_board_info *info);
170static int adt7470_remove(struct i2c_client *client);
171
172static const struct i2c_device_id adt7470_id[] = {
173 { "adt7470", adt7470 },
174 { }
175};
176MODULE_DEVICE_TABLE(i2c, adt7470_id);
6f9703d0
DW		 177
178static struct i2c_driver adt7470_driver = {
008f1ca5 179 .class = I2C_CLASS_HWMON,
6f9703d0
DW		 180 .driver = {
181 .name = "adt7470",
182 },
008f1ca5
JD		 183 .probe = adt7470_probe,
184 .remove = adt7470_remove,
185 .id_table = adt7470_id,
186 .detect = adt7470_detect,
187 .address_data = &addr_data,
6f9703d0
DW		 188};
189
190/*
191 * 16-bit registers on the ADT7470 are low-byte first. The data sheet says
192 * that the low byte must be read before the high byte.
193 */
194static inline int adt7470_read_word_data(struct i2c_client *client, u8 reg)
195{
196 u16 foo;
197 foo = i2c_smbus_read_byte_data(client, reg);
198 foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
199 return foo;
200}
201
202static inline int adt7470_write_word_data(struct i2c_client *client, u8 reg,
203 u16 value)
204{
205 return i2c_smbus_write_byte_data(client, reg, value & 0xFF)
206 && i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
207}
208
209static void adt7470_init_client(struct i2c_client *client)
210{
211 int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
212
213 if (reg < 0) {
214 dev_err(&client->dev, "cannot read configuration register\n");
215 } else {
216 /* start monitoring (and do a self-test) */
217 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3);
218 }
219}
220
221static struct adt7470_data *adt7470_update_device(struct device *dev)
222{
223 struct i2c_client *client = to_i2c_client(dev);
224 struct adt7470_data *data = i2c_get_clientdata(client);
225 unsigned long local_jiffies = jiffies;
226 u8 cfg;
227 int i;
228
229 mutex_lock(&data->lock);
230 if (time_before(local_jiffies, data->sensors_last_updated +
231 SENSOR_REFRESH_INTERVAL)
232 && data->sensors_valid)
233 goto no_sensor_update;
234
235 /* start reading temperature sensors */
236 cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
237 cfg |= 0x80;
238 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
239
240 /*
241 * Delay is 200ms * number of tmp05 sensors. Too bad
242 * there's no way to figure out how many are connected.
243 * For now, assume 1s will work.
244 */
245 msleep(TEMP_COLLECTION_TIME);
246
247 /* done reading temperature sensors */
248 cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
249 cfg &= ~0x80;
250 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
251
252 for (i = 0; i < ADT7470_TEMP_COUNT; i++)
253 data->temp[i] = i2c_smbus_read_byte_data(client,
254 ADT7470_TEMP_REG(i));
255
256 for (i = 0; i < ADT7470_FAN_COUNT; i++)
257 data->fan[i] = adt7470_read_word_data(client,
258 ADT7470_REG_FAN(i));
259
260 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
261 int reg;
262 int reg_mask;
263
264 data->pwm[i] = i2c_smbus_read_byte_data(client,
265 ADT7470_REG_PWM(i));
266
267 if (i % 2)
268 reg_mask = ADT7470_PWM2_AUTO_MASK;
269 else
270 reg_mask = ADT7470_PWM1_AUTO_MASK;
271
272 reg = ADT7470_REG_PWM_CFG(i);
273 if (i2c_smbus_read_byte_data(client, reg) & reg_mask)
274 data->pwm_automatic[i] = 1;
275 else
276 data->pwm_automatic[i] = 0;
277
278 reg = ADT7470_REG_PWM_AUTO_TEMP(i);
279 cfg = i2c_smbus_read_byte_data(client, reg);
280 if (!(i % 2))
281 data->pwm_auto_temp[i] = cfg >> 4;
282 else
283 data->pwm_auto_temp[i] = cfg & 0xF;
284 }
285
286 if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) &
287 ADT7470_FSPD_MASK)
288 data->force_pwm_max = 1;
289 else
290 data->force_pwm_max = 0;
291
fe03f28c
DW		 292 data->alarm = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1);
293 if (data->alarm & ADT7470_OOL_ALARM)
294 data->alarm |= ALARM2(i2c_smbus_read_byte_data(client,
295 ADT7470_REG_ALARM2));
6f9703d0
DW		 296 data->alarms_mask = adt7470_read_word_data(client,
297 ADT7470_REG_ALARM1_MASK);
298
299 data->sensors_last_updated = local_jiffies;
300 data->sensors_valid = 1;
301
302no_sensor_update:
303 if (time_before(local_jiffies, data->limits_last_updated +
304 LIMIT_REFRESH_INTERVAL)
305 && data->limits_valid)
306 goto out;
307
308 for (i = 0; i < ADT7470_TEMP_COUNT; i++) {
309 data->temp_min[i] = i2c_smbus_read_byte_data(client,
310 ADT7470_TEMP_MIN_REG(i));
311 data->temp_max[i] = i2c_smbus_read_byte_data(client,
312 ADT7470_TEMP_MAX_REG(i));
313 }
314
315 for (i = 0; i < ADT7470_FAN_COUNT; i++) {
316 data->fan_min[i] = adt7470_read_word_data(client,
317 ADT7470_REG_FAN_MIN(i));
318 data->fan_max[i] = adt7470_read_word_data(client,
319 ADT7470_REG_FAN_MAX(i));
320 }
321
322 for (i = 0; i < ADT7470_PWM_COUNT; i++) {
323 data->pwm_max[i] = i2c_smbus_read_byte_data(client,
324 ADT7470_REG_PWM_MAX(i));
325 data->pwm_min[i] = i2c_smbus_read_byte_data(client,
326 ADT7470_REG_PWM_MIN(i));
327 data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
328 ADT7470_REG_PWM_TMIN(i));
329 }
330
331 data->limits_last_updated = local_jiffies;
332 data->limits_valid = 1;
333
334out:
335 mutex_unlock(&data->lock);
336 return data;
337}
338
339static ssize_t show_temp_min(struct device *dev,
340 struct device_attribute *devattr,
341 char *buf)
342{
343 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
344 struct adt7470_data *data = adt7470_update_device(dev);
345 return sprintf(buf, "%d\n", 1000 * data->temp_min[attr->index]);
346}
347
348static ssize_t set_temp_min(struct device *dev,
349 struct device_attribute *devattr,
350 const char *buf,
351 size_t count)
352{
353 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
354 struct i2c_client *client = to_i2c_client(dev);
355 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46
DW		 356 long temp;
357
358 if (strict_strtol(buf, 10, &temp))
359 return -EINVAL;
360
8f8c1fb0 361 temp = DIV_ROUND_CLOSEST(temp, 1000);
05a9bd46 362 temp = SENSORS_LIMIT(temp, 0, 255);
6f9703d0
DW		 363
364 mutex_lock(&data->lock);
365 data->temp_min[attr->index] = temp;
366 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index),
367 temp);
368 mutex_unlock(&data->lock);
369
370 return count;
371}
372
373static ssize_t show_temp_max(struct device *dev,
374 struct device_attribute *devattr,
375 char *buf)
376{
377 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
378 struct adt7470_data *data = adt7470_update_device(dev);
379 return sprintf(buf, "%d\n", 1000 * data->temp_max[attr->index]);
380}
381
382static ssize_t set_temp_max(struct device *dev,
383 struct device_attribute *devattr,
384 const char *buf,
385 size_t count)
386{
387 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
388 struct i2c_client *client = to_i2c_client(dev);
389 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46
DW		 390 long temp;
391
392 if (strict_strtol(buf, 10, &temp))
393 return -EINVAL;
394
8f8c1fb0 395 temp = DIV_ROUND_CLOSEST(temp, 1000);
05a9bd46 396 temp = SENSORS_LIMIT(temp, 0, 255);
6f9703d0
DW		 397
398 mutex_lock(&data->lock);
399 data->temp_max[attr->index] = temp;
400 i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index),
401 temp);
402 mutex_unlock(&data->lock);
403
404 return count;
405}
406
407static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
408 char *buf)
409{
410 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
411 struct adt7470_data *data = adt7470_update_device(dev);
412 return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]);
413}
414
fe03f28c 415static ssize_t show_alarm_mask(struct device *dev,
6f9703d0
DW		 416 struct device_attribute *devattr,
417 char *buf)
418{
6f9703d0
DW		 419 struct adt7470_data *data = adt7470_update_device(dev);
420
fe03f28c 421 return sprintf(buf, "%x\n", data->alarms_mask);
6f9703d0
DW		 422}
423
424static ssize_t show_fan_max(struct device *dev,
425 struct device_attribute *devattr,
426 char *buf)
427{
428 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
429 struct adt7470_data *data = adt7470_update_device(dev);
430
431 if (FAN_DATA_VALID(data->fan_max[attr->index]))
432 return sprintf(buf, "%d\n",
433 FAN_PERIOD_TO_RPM(data->fan_max[attr->index]));
434 else
435 return sprintf(buf, "0\n");
436}
437
438static ssize_t set_fan_max(struct device *dev,
439 struct device_attribute *devattr,
440 const char *buf, size_t count)
441{
442 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
443 struct i2c_client *client = to_i2c_client(dev);
444 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46 445 long temp;
6f9703d0 446
05a9bd46 447 if (strict_strtol(buf, 10, &temp) || !temp)
6f9703d0 448 return -EINVAL;
05a9bd46 449
6f9703d0 450 temp = FAN_RPM_TO_PERIOD(temp);
05a9bd46 451 temp = SENSORS_LIMIT(temp, 1, 65534);
6f9703d0
DW		 452
453 mutex_lock(&data->lock);
454 data->fan_max[attr->index] = temp;
455 adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp);
456 mutex_unlock(&data->lock);
457
458 return count;
459}
460
461static ssize_t show_fan_min(struct device *dev,
462 struct device_attribute *devattr,
463 char *buf)
464{
465 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
466 struct adt7470_data *data = adt7470_update_device(dev);
467
468 if (FAN_DATA_VALID(data->fan_min[attr->index]))
469 return sprintf(buf, "%d\n",
470 FAN_PERIOD_TO_RPM(data->fan_min[attr->index]));
471 else
472 return sprintf(buf, "0\n");
473}
474
475static ssize_t set_fan_min(struct device *dev,
476 struct device_attribute *devattr,
477 const char *buf, size_t count)
478{
479 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
480 struct i2c_client *client = to_i2c_client(dev);
481 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46 482 long temp;
6f9703d0 483
05a9bd46 484 if (strict_strtol(buf, 10, &temp) || !temp)
6f9703d0 485 return -EINVAL;
05a9bd46 486
6f9703d0 487 temp = FAN_RPM_TO_PERIOD(temp);
05a9bd46 488 temp = SENSORS_LIMIT(temp, 1, 65534);
6f9703d0
DW		 489
490 mutex_lock(&data->lock);
491 data->fan_min[attr->index] = temp;
492 adt7470_write_word_data(client, ADT7470_REG_FAN_MIN(attr->index), temp);
493 mutex_unlock(&data->lock);
494
495 return count;
496}
497
498static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
499 char *buf)
500{
501 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
502 struct adt7470_data *data = adt7470_update_device(dev);
503
504 if (FAN_DATA_VALID(data->fan[attr->index]))
505 return sprintf(buf, "%d\n",
506 FAN_PERIOD_TO_RPM(data->fan[attr->index]));
507 else
508 return sprintf(buf, "0\n");
509}
510
511static ssize_t show_force_pwm_max(struct device *dev,
512 struct device_attribute *devattr,
513 char *buf)
514{
515 struct adt7470_data *data = adt7470_update_device(dev);
516 return sprintf(buf, "%d\n", data->force_pwm_max);
517}
518
519static ssize_t set_force_pwm_max(struct device *dev,
520 struct device_attribute *devattr,
521 const char *buf,
522 size_t count)
523{
524 struct i2c_client *client = to_i2c_client(dev);
525 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46 526 long temp;
6f9703d0
DW		 527 u8 reg;
528
05a9bd46
DW		 529 if (strict_strtol(buf, 10, &temp))
530 return -EINVAL;
531
6f9703d0
DW		 532 mutex_lock(&data->lock);
533 data->force_pwm_max = temp;
534 reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
535 if (temp)
536 reg |= ADT7470_FSPD_MASK;
537 else
538 reg &= ~ADT7470_FSPD_MASK;
539 i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg);
540 mutex_unlock(&data->lock);
541
542 return count;
543}
544
545static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
546 char *buf)
547{
548 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
549 struct adt7470_data *data = adt7470_update_device(dev);
550 return sprintf(buf, "%d\n", data->pwm[attr->index]);
551}
552
553static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
554 const char *buf, size_t count)
555{
556 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
557 struct i2c_client *client = to_i2c_client(dev);
558 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46
DW		 559 long temp;
560
561 if (strict_strtol(buf, 10, &temp))
562 return -EINVAL;
563
564 temp = SENSORS_LIMIT(temp, 0, 255);
6f9703d0
DW		 565
566 mutex_lock(&data->lock);
567 data->pwm[attr->index] = temp;
568 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(attr->index), temp);
569 mutex_unlock(&data->lock);
570
571 return count;
572}
573
574static ssize_t show_pwm_max(struct device *dev,
575 struct device_attribute *devattr,
576 char *buf)
577{
578 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
579 struct adt7470_data *data = adt7470_update_device(dev);
580 return sprintf(buf, "%d\n", data->pwm_max[attr->index]);
581}
582
583static ssize_t set_pwm_max(struct device *dev,
584 struct device_attribute *devattr,
585 const char *buf,
586 size_t count)
587{
588 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
589 struct i2c_client *client = to_i2c_client(dev);
590 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46
DW		 591 long temp;
592
593 if (strict_strtol(buf, 10, &temp))
594 return -EINVAL;
595
596 temp = SENSORS_LIMIT(temp, 0, 255);
6f9703d0
DW		 597
598 mutex_lock(&data->lock);
599 data->pwm_max[attr->index] = temp;
600 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MAX(attr->index),
601 temp);
602 mutex_unlock(&data->lock);
603
604 return count;
605}
606
607static ssize_t show_pwm_min(struct device *dev,
608 struct device_attribute *devattr,
609 char *buf)
610{
611 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
612 struct adt7470_data *data = adt7470_update_device(dev);
613 return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
614}
615
616static ssize_t set_pwm_min(struct device *dev,
617 struct device_attribute *devattr,
618 const char *buf,
619 size_t count)
620{
621 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
622 struct i2c_client *client = to_i2c_client(dev);
623 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46
DW		 624 long temp;
625
626 if (strict_strtol(buf, 10, &temp))
627 return -EINVAL;
628
629 temp = SENSORS_LIMIT(temp, 0, 255);
6f9703d0
DW		 630
631 mutex_lock(&data->lock);
632 data->pwm_min[attr->index] = temp;
633 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MIN(attr->index),
634 temp);
635 mutex_unlock(&data->lock);
636
637 return count;
638}
639
640static ssize_t show_pwm_tmax(struct device *dev,
641 struct device_attribute *devattr,
642 char *buf)
643{
644 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
645 struct adt7470_data *data = adt7470_update_device(dev);
646 /* the datasheet says that tmax = tmin + 20C */
647 return sprintf(buf, "%d\n", 1000 * (20 + data->pwm_tmin[attr->index]));
648}
649
650static ssize_t show_pwm_tmin(struct device *dev,
651 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 return sprintf(buf, "%d\n", 1000 * data->pwm_tmin[attr->index]);
657}
658
659static ssize_t set_pwm_tmin(struct device *dev,
660 struct device_attribute *devattr,
661 const char *buf,
662 size_t count)
663{
664 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
665 struct i2c_client *client = to_i2c_client(dev);
666 struct adt7470_data *data = i2c_get_clientdata(client);
05a9bd46
DW		 667 long temp;
668
669 if (strict_strtol(buf, 10, &temp))
670 return -EINVAL;
671
8f8c1fb0 672 temp = DIV_ROUND_CLOSEST(temp, 1000);
05a9bd46 673 temp = SENSORS_LIMIT(temp, 0, 255);
6f9703d0
DW		 674
675 mutex_lock(&data->lock);
676 data->pwm_tmin[attr->index] = temp;
677 i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index),
678 temp);
679 mutex_unlock(&data->lock);
680
681 return count;
682}
683
684static ssize_t show_pwm_auto(struct device *dev,
685 struct device_attribute *devattr,
686 char *buf)
687{
688 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
689 struct adt7470_data *data = adt7470_update_device(dev);
690 return sprintf(buf, "%d\n", 1 + data->pwm_automatic[attr->index]);
691}
692
693static ssize_t set_pwm_auto(struct device *dev,
694 struct device_attribute *devattr,
695 const char *buf,
696 size_t count)
697{
698 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
699 struct i2c_client *client = to_i2c_client(dev);
700 struct adt7470_data *data = i2c_get_clientdata(client);
6f9703d0
DW		 701 int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index);
702 int pwm_auto_reg_mask;
05a9bd46 703 long temp;
6f9703d0
DW		 704 u8 reg;
705
05a9bd46
DW		 706 if (strict_strtol(buf, 10, &temp))
707 return -EINVAL;
708
6f9703d0
DW		 709 if (attr->index % 2)
710 pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK;
711 else
712 pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK;
713
714 if (temp != 2 && temp != 1)
715 return -EINVAL;
716 temp--;
717
718 mutex_lock(&data->lock);
719 data->pwm_automatic[attr->index] = temp;
720 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
721 if (temp)
722 reg |= pwm_auto_reg_mask;
723 else
724 reg &= ~pwm_auto_reg_mask;
725 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
726 mutex_unlock(&data->lock);
727
728 return count;
729}
730
731static ssize_t show_pwm_auto_temp(struct device *dev,
732 struct device_attribute *devattr,
733 char *buf)
734{
735 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
736 struct adt7470_data *data = adt7470_update_device(dev);
737 u8 ctrl = data->pwm_auto_temp[attr->index];
738
739 if (ctrl)
740 return sprintf(buf, "%d\n", 1 << (ctrl - 1));
741 else
742 return sprintf(buf, "%d\n", ADT7470_PWM_ALL_TEMPS);
743}
744
745static int cvt_auto_temp(int input)
746{
747 if (input == ADT7470_PWM_ALL_TEMPS)
748 return 0;
ce9c2f44 749 if (input < 1 || !is_power_of_2(input))
6f9703d0
DW		 750 return -EINVAL;
751 return ilog2(input) + 1;
752}
753
754static ssize_t set_pwm_auto_temp(struct device *dev,
755 struct device_attribute *devattr,
756 const char *buf,
757 size_t count)
758{
759 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
760 struct i2c_client *client = to_i2c_client(dev);
761 struct adt7470_data *data = i2c_get_clientdata(client);
6f9703d0 762 int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index);
05a9bd46 763 long temp;
6f9703d0
DW		 764 u8 reg;
765
05a9bd46
DW		 766 if (strict_strtol(buf, 10, &temp))
767 return -EINVAL;
768
769 temp = cvt_auto_temp(temp);
6f9703d0
DW		 770 if (temp < 0)
771 return temp;
772
773 mutex_lock(&data->lock);
774 data->pwm_automatic[attr->index] = temp;
775 reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
776
777 if (!(attr->index % 2)) {
778 reg &= 0xF;
779 reg |= (temp << 4) & 0xF0;
780 } else {
781 reg &= 0xF0;
782 reg |= temp & 0xF;
783 }
784
785 i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
786 mutex_unlock(&data->lock);
787
788 return count;
789}
790
fe03f28c
DW		 791static ssize_t show_alarm(struct device *dev,
792 struct device_attribute *devattr,
793 char *buf)
794{
795 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
796 struct adt7470_data *data = adt7470_update_device(dev);
797
798 if (data->alarm & attr->index)
799 return sprintf(buf, "1\n");
800 else
801 return sprintf(buf, "0\n");
802}
803
804static DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL);
6f9703d0
DW		 805
806static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
807 set_temp_max, 0);
808static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
809 set_temp_max, 1);
810static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
811 set_temp_max, 2);
812static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
813 set_temp_max, 3);
814static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_temp_max,
815 set_temp_max, 4);
816static SENSOR_DEVICE_ATTR(temp6_max, S_IWUSR | S_IRUGO, show_temp_max,
817 set_temp_max, 5);
818static SENSOR_DEVICE_ATTR(temp7_max, S_IWUSR | S_IRUGO, show_temp_max,
819 set_temp_max, 6);
820static SENSOR_DEVICE_ATTR(temp8_max, S_IWUSR | S_IRUGO, show_temp_max,
821 set_temp_max, 7);
822static SENSOR_DEVICE_ATTR(temp9_max, S_IWUSR | S_IRUGO, show_temp_max,
823 set_temp_max, 8);
824static SENSOR_DEVICE_ATTR(temp10_max, S_IWUSR | S_IRUGO, show_temp_max,
825 set_temp_max, 9);
826
827static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
828 set_temp_min, 0);
829static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
830 set_temp_min, 1);
831static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
832 set_temp_min, 2);
833static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
834 set_temp_min, 3);
835static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_temp_min,
836 set_temp_min, 4);
837static SENSOR_DEVICE_ATTR(temp6_min, S_IWUSR | S_IRUGO, show_temp_min,
838 set_temp_min, 5);
839static SENSOR_DEVICE_ATTR(temp7_min, S_IWUSR | S_IRUGO, show_temp_min,
840 set_temp_min, 6);
841static SENSOR_DEVICE_ATTR(temp8_min, S_IWUSR | S_IRUGO, show_temp_min,
842 set_temp_min, 7);
843static SENSOR_DEVICE_ATTR(temp9_min, S_IWUSR | S_IRUGO, show_temp_min,
844 set_temp_min, 8);
845static SENSOR_DEVICE_ATTR(temp10_min, S_IWUSR | S_IRUGO, show_temp_min,
846 set_temp_min, 9);
847
848static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
849static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
850static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
851static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
852static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
853static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5);
854static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6);
855static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
856static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8);
857static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9);
858
fe03f28c
DW		 859static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
860 ADT7470_R1T_ALARM);
861static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
862 ADT7470_R2T_ALARM);
863static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
864 ADT7470_R3T_ALARM);
865static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
866 ADT7470_R4T_ALARM);
867static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
868 ADT7470_R5T_ALARM);
869static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
870 ADT7470_R6T_ALARM);
871static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO, show_alarm, NULL,
872 ADT7470_R7T_ALARM);
873static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO, show_alarm, NULL,
874 ALARM2(ADT7470_R8T_ALARM));
875static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO, show_alarm, NULL,
876 ALARM2(ADT7470_R9T_ALARM));
877static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO, show_alarm, NULL,
878 ALARM2(ADT7470_R10T_ALARM));
879
6f9703d0
DW		 880static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max,
881 set_fan_max, 0);
882static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max,
883 set_fan_max, 1);
884static SENSOR_DEVICE_ATTR(fan3_max, S_IWUSR | S_IRUGO, show_fan_max,
885 set_fan_max, 2);
886static SENSOR_DEVICE_ATTR(fan4_max, S_IWUSR | S_IRUGO, show_fan_max,
887 set_fan_max, 3);
888
889static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
890 set_fan_min, 0);
891static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
892 set_fan_min, 1);
893static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
894 set_fan_min, 2);
895static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
896 set_fan_min, 3);
897
898static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
899static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
900static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
901static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
902
fe03f28c
DW		 903static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
904 ALARM2(ADT7470_FAN1_ALARM));
905static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
906 ALARM2(ADT7470_FAN2_ALARM));
907static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
908 ALARM2(ADT7470_FAN3_ALARM));
909static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
910 ALARM2(ADT7470_FAN4_ALARM));
911
6f9703d0
DW		 912static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
913 show_force_pwm_max, set_force_pwm_max, 0);
914
915static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
916static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
917static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
918static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
919
920static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
921 show_pwm_min, set_pwm_min, 0);
922static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
923 show_pwm_min, set_pwm_min, 1);
924static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
925 show_pwm_min, set_pwm_min, 2);
926static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
927 show_pwm_min, set_pwm_min, 3);
928
929static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
930 show_pwm_max, set_pwm_max, 0);
931static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
932 show_pwm_max, set_pwm_max, 1);
933static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
934 show_pwm_max, set_pwm_max, 2);
935static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
936 show_pwm_max, set_pwm_max, 3);
937
938static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
939 show_pwm_tmin, set_pwm_tmin, 0);
940static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO,
941 show_pwm_tmin, set_pwm_tmin, 1);
942static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO,
943 show_pwm_tmin, set_pwm_tmin, 2);
944static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO,
945 show_pwm_tmin, set_pwm_tmin, 3);
946
947static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, show_pwm_tmax,
948 NULL, 0);
949static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IRUGO, show_pwm_tmax,
950 NULL, 1);
951static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IRUGO, show_pwm_tmax,
952 NULL, 2);
953static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IRUGO, show_pwm_tmax,
954 NULL, 3);
955
956static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
957 set_pwm_auto, 0);
958static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
959 set_pwm_auto, 1);
960static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
961 set_pwm_auto, 2);
962static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
963 set_pwm_auto, 3);
964
965static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
966 show_pwm_auto_temp, set_pwm_auto_temp, 0);
967static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
968 show_pwm_auto_temp, set_pwm_auto_temp, 1);
969static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
970 show_pwm_auto_temp, set_pwm_auto_temp, 2);
971static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
972 show_pwm_auto_temp, set_pwm_auto_temp, 3);
973
974static struct attribute *adt7470_attr[] =
975{
fe03f28c 976 &dev_attr_alarm_mask.attr,
6f9703d0
DW		 977 &sensor_dev_attr_temp1_max.dev_attr.attr,
978 &sensor_dev_attr_temp2_max.dev_attr.attr,
979 &sensor_dev_attr_temp3_max.dev_attr.attr,
980 &sensor_dev_attr_temp4_max.dev_attr.attr,
981 &sensor_dev_attr_temp5_max.dev_attr.attr,
982 &sensor_dev_attr_temp6_max.dev_attr.attr,
983 &sensor_dev_attr_temp7_max.dev_attr.attr,
984 &sensor_dev_attr_temp8_max.dev_attr.attr,
985 &sensor_dev_attr_temp9_max.dev_attr.attr,
986 &sensor_dev_attr_temp10_max.dev_attr.attr,
987 &sensor_dev_attr_temp1_min.dev_attr.attr,
988 &sensor_dev_attr_temp2_min.dev_attr.attr,
989 &sensor_dev_attr_temp3_min.dev_attr.attr,
990 &sensor_dev_attr_temp4_min.dev_attr.attr,
991 &sensor_dev_attr_temp5_min.dev_attr.attr,
992 &sensor_dev_attr_temp6_min.dev_attr.attr,
993 &sensor_dev_attr_temp7_min.dev_attr.attr,
994 &sensor_dev_attr_temp8_min.dev_attr.attr,
995 &sensor_dev_attr_temp9_min.dev_attr.attr,
996 &sensor_dev_attr_temp10_min.dev_attr.attr,
997 &sensor_dev_attr_temp1_input.dev_attr.attr,
998 &sensor_dev_attr_temp2_input.dev_attr.attr,
999 &sensor_dev_attr_temp3_input.dev_attr.attr,
1000 &sensor_dev_attr_temp4_input.dev_attr.attr,
1001 &sensor_dev_attr_temp5_input.dev_attr.attr,
1002 &sensor_dev_attr_temp6_input.dev_attr.attr,
1003 &sensor_dev_attr_temp7_input.dev_attr.attr,
1004 &sensor_dev_attr_temp8_input.dev_attr.attr,
1005 &sensor_dev_attr_temp9_input.dev_attr.attr,
1006 &sensor_dev_attr_temp10_input.dev_attr.attr,
fe03f28c
DW		 1007 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1008 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1009 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1010 &sensor_dev_attr_temp4_alarm.dev_attr.attr,
1011 &sensor_dev_attr_temp5_alarm.dev_attr.attr,
1012 &sensor_dev_attr_temp6_alarm.dev_attr.attr,
1013 &sensor_dev_attr_temp7_alarm.dev_attr.attr,
1014 &sensor_dev_attr_temp8_alarm.dev_attr.attr,
1015 &sensor_dev_attr_temp9_alarm.dev_attr.attr,
1016 &sensor_dev_attr_temp10_alarm.dev_attr.attr,
6f9703d0
DW		 1017 &sensor_dev_attr_fan1_max.dev_attr.attr,
1018 &sensor_dev_attr_fan2_max.dev_attr.attr,
1019 &sensor_dev_attr_fan3_max.dev_attr.attr,
1020 &sensor_dev_attr_fan4_max.dev_attr.attr,
1021 &sensor_dev_attr_fan1_min.dev_attr.attr,
1022 &sensor_dev_attr_fan2_min.dev_attr.attr,
1023 &sensor_dev_attr_fan3_min.dev_attr.attr,
1024 &sensor_dev_attr_fan4_min.dev_attr.attr,
1025 &sensor_dev_attr_fan1_input.dev_attr.attr,
1026 &sensor_dev_attr_fan2_input.dev_attr.attr,
1027 &sensor_dev_attr_fan3_input.dev_attr.attr,
1028 &sensor_dev_attr_fan4_input.dev_attr.attr,
fe03f28c
DW		 1029 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1030 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1031 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1032 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
6f9703d0
DW		 1033 &sensor_dev_attr_force_pwm_max.dev_attr.attr,
1034 &sensor_dev_attr_pwm1.dev_attr.attr,
1035 &sensor_dev_attr_pwm2.dev_attr.attr,
1036 &sensor_dev_attr_pwm3.dev_attr.attr,
1037 &sensor_dev_attr_pwm4.dev_attr.attr,
1038 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1039 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1040 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1041 &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr,
1042 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1043 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1044 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1045 &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr,
1046 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1047 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1048 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1049 &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,
1050 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1051 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1052 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1053 &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
1054 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1055 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1056 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1057 &sensor_dev_attr_pwm4_enable.dev_attr.attr,
1058 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1059 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1060 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1061 &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
1062 NULL
1063};
1064
008f1ca5
JD		 1065/* Return 0 if detection is successful, -ENODEV otherwise */
1066static int adt7470_detect(struct i2c_client *client, int kind,
1067 struct i2c_board_info *info)
6f9703d0 1068{
008f1ca5 1069 struct i2c_adapter *adapter = client->adapter;
6f9703d0
DW		 1070
1071 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
008f1ca5 1072 return -ENODEV;
6f9703d0
DW		 1073
1074 if (kind <= 0) {
1075 int vendor, device, revision;
1076
1077 vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR);
008f1ca5
JD		 1078 if (vendor != ADT7470_VENDOR)
1079 return -ENODEV;
6f9703d0
DW		 1080
1081 device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE);
008f1ca5
JD		 1082 if (device != ADT7470_DEVICE)
1083 return -ENODEV;
6f9703d0
DW		 1084
1085 revision = i2c_smbus_read_byte_data(client,
1086 ADT7470_REG_REVISION);
008f1ca5
JD		 1087 if (revision != ADT7470_REVISION)
1088 return -ENODEV;
6f9703d0
DW		 1089 } else
1090 dev_dbg(&adapter->dev, "detection forced\n");
1091
008f1ca5 1092 strlcpy(info->type, "adt7470", I2C_NAME_SIZE);
6f9703d0 1093
008f1ca5
JD		 1094 return 0;
1095}
1096
1097static int adt7470_probe(struct i2c_client *client,
1098 const struct i2c_device_id *id)
1099{
1100 struct adt7470_data *data;
1101 int err;
1102
1103 data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL);
1104 if (!data) {
1105 err = -ENOMEM;
1106 goto exit;
1107 }
1108
1109 i2c_set_clientdata(client, data);
1110 mutex_init(&data->lock);
6f9703d0
DW		 1111
1112 dev_info(&client->dev, "%s chip found\n", client->name);
1113
1114 /* Initialize the ADT7470 chip */
1115 adt7470_init_client(client);
1116
1117 /* Register sysfs hooks */
1118 data->attrs.attrs = adt7470_attr;
1119 if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
008f1ca5 1120 goto exit_free;
6f9703d0 1121
1beeffe4
TJ		 1122 data->hwmon_dev = hwmon_device_register(&client->dev);
1123 if (IS_ERR(data->hwmon_dev)) {
1124 err = PTR_ERR(data->hwmon_dev);
6f9703d0
DW		 1125 goto exit_remove;
1126 }
1127
1128 return 0;
1129
1130exit_remove:
1131 sysfs_remove_group(&client->dev.kobj, &data->attrs);
6f9703d0
DW		 1132exit_free:
1133 kfree(data);
1134exit:
1135 return err;
1136}
1137
008f1ca5 1138static int adt7470_remove(struct i2c_client *client)
6f9703d0
DW		 1139{
1140 struct adt7470_data *data = i2c_get_clientdata(client);
1141
1beeffe4 1142 hwmon_device_unregister(data->hwmon_dev);
6f9703d0 1143 sysfs_remove_group(&client->dev.kobj, &data->attrs);
6f9703d0
DW		 1144 kfree(data);
1145 return 0;
1146}
1147
1148static int __init adt7470_init(void)
1149{
1150 return i2c_add_driver(&adt7470_driver);
1151}
1152
1153static void __exit adt7470_exit(void)
1154{
1155 i2c_del_driver(&adt7470_driver);
1156}
1157
1158MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
1159MODULE_DESCRIPTION("ADT7470 driver");
1160MODULE_LICENSE("GPL");
1161
1162module_init(adt7470_init);
1163module_exit(adt7470_exit);
Linux 6.x block layer and io_uring tree(s)