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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * f75375s.c - driver for the Fintek F75375/SP, F75373 and
4 * F75387SG/RG hardware monitoring features
5 * Copyright (C) 2006-2007 Riku Voipio
6 *
7 * Datasheets available at:
8 *
9 * f75375:
10 * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf
11 *
12 * f75373:
13 * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf
14 *
15 * f75387:
16 * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf
17 */
18
19#include <linux/module.h>
20#include <linux/jiffies.h>
21#include <linux/hwmon.h>
22#include <linux/hwmon-sysfs.h>
23#include <linux/i2c.h>
24#include <linux/err.h>
25#include <linux/mutex.h>
26#include <linux/f75375s.h>
27#include <linux/slab.h>
28
29/* Addresses to scan */
30static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
31
32enum chips { f75373, f75375, f75387 };
33
34/* Fintek F75375 registers */
35#define F75375_REG_CONFIG0 0x0
36#define F75375_REG_CONFIG1 0x1
37#define F75375_REG_CONFIG2 0x2
38#define F75375_REG_CONFIG3 0x3
39#define F75375_REG_ADDR 0x4
40#define F75375_REG_INTR 0x31
41#define F75375_CHIP_ID 0x5A
42#define F75375_REG_VERSION 0x5C
43#define F75375_REG_VENDOR 0x5D
44#define F75375_REG_FAN_TIMER 0x60
45
46#define F75375_REG_VOLT(nr) (0x10 + (nr))
47#define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2)
48#define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2)
49
50#define F75375_REG_TEMP(nr) (0x14 + (nr))
51#define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr))
52#define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2)
53#define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2)
54
55#define F75375_REG_FAN(nr) (0x16 + (nr) * 2)
56#define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2)
57#define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10)
58#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10)
59#define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10)
60
61#define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10)
62#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
63#define F75375_REG_FAN_B_SPEED(nr, step) \
64 ((0xA5 + (nr) * 0x10) + (step) * 2)
65
66#define F75375_REG_PWM1_RAISE_DUTY 0x69
67#define F75375_REG_PWM2_RAISE_DUTY 0x6A
68#define F75375_REG_PWM1_DROP_DUTY 0x6B
69#define F75375_REG_PWM2_DROP_DUTY 0x6C
70
71#define F75375_FAN_CTRL_LINEAR(nr) (4 + nr)
72#define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4))
73#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
74#define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4))
75#define F75387_FAN_MANU_MODE(nr) ((nr) * 4)
76
77/*
78 * Data structures and manipulation thereof
79 */
80
81struct f75375_data {
82 unsigned short addr;
83 struct device *hwmon_dev;
84
85 const char *name;
86 int kind;
87 struct mutex update_lock; /* protect register access */
88 bool valid;
89 unsigned long last_updated; /* In jiffies */
90 unsigned long last_limits; /* In jiffies */
91
92 /* Register values */
93 u8 in[4];
94 u8 in_max[4];
95 u8 in_min[4];
96 u16 fan[2];
97 u16 fan_min[2];
98 u16 fan_max[2];
99 u16 fan_target[2];
100 u8 fan_timer;
101 u8 pwm[2];
102 u8 pwm_mode[2];
103 u8 pwm_enable[2];
104 /*
105 * f75387: For remote temperature reading, it uses signed 11-bit
106 * values with LSB = 0.125 degree Celsius, left-justified in 16-bit
107 * registers. For original 8-bit temp readings, the LSB just is 0.
108 */
109 s16 temp11[2];
110 s8 temp_high[2];
111 s8 temp_max_hyst[2];
112};
113
114static int f75375_detect(struct i2c_client *client,
115 struct i2c_board_info *info);
116static int f75375_probe(struct i2c_client *client);
117static void f75375_remove(struct i2c_client *client);
118
119static const struct i2c_device_id f75375_id[] = {
120 { "f75373", f75373 },
121 { "f75375", f75375 },
122 { "f75387", f75387 },
123 { }
124};
125MODULE_DEVICE_TABLE(i2c, f75375_id);
126
127static struct i2c_driver f75375_driver = {
128 .class = I2C_CLASS_HWMON,
129 .driver = {
130 .name = "f75375",
131 },
132 .probe = f75375_probe,
133 .remove = f75375_remove,
134 .id_table = f75375_id,
135 .detect = f75375_detect,
136 .address_list = normal_i2c,
137};
138
139static inline int f75375_read8(struct i2c_client *client, u8 reg)
140{
141 return i2c_smbus_read_byte_data(client, reg);
142}
143
144/* in most cases, should be called while holding update_lock */
145static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
146{
147 return (i2c_smbus_read_byte_data(client, reg) << 8)
148 | i2c_smbus_read_byte_data(client, reg + 1);
149}
150
151static inline void f75375_write8(struct i2c_client *client, u8 reg,
152 u8 value)
153{
154 i2c_smbus_write_byte_data(client, reg, value);
155}
156
157static inline void f75375_write16(struct i2c_client *client, u8 reg,
158 u16 value)
159{
160 int err = i2c_smbus_write_byte_data(client, reg, (value >> 8));
161 if (err)
162 return;
163 i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
164}
165
166static void f75375_write_pwm(struct i2c_client *client, int nr)
167{
168 struct f75375_data *data = i2c_get_clientdata(client);
169 if (data->kind == f75387)
170 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->pwm[nr]);
171 else
172 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
173 data->pwm[nr]);
174}
175
176static struct f75375_data *f75375_update_device(struct device *dev)
177{
178 struct i2c_client *client = to_i2c_client(dev);
179 struct f75375_data *data = i2c_get_clientdata(client);
180 int nr;
181
182 mutex_lock(&data->update_lock);
183
184 /* Limit registers cache is refreshed after 60 seconds */
185 if (time_after(jiffies, data->last_limits + 60 * HZ)
186 || !data->valid) {
187 for (nr = 0; nr < 2; nr++) {
188 data->temp_high[nr] =
189 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
190 data->temp_max_hyst[nr] =
191 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
192 data->fan_max[nr] =
193 f75375_read16(client, F75375_REG_FAN_FULL(nr));
194 data->fan_min[nr] =
195 f75375_read16(client, F75375_REG_FAN_MIN(nr));
196 data->fan_target[nr] =
197 f75375_read16(client, F75375_REG_FAN_EXP(nr));
198 }
199 for (nr = 0; nr < 4; nr++) {
200 data->in_max[nr] =
201 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
202 data->in_min[nr] =
203 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
204 }
205 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
206 data->last_limits = jiffies;
207 }
208
209 /* Measurement registers cache is refreshed after 2 second */
210 if (time_after(jiffies, data->last_updated + 2 * HZ)
211 || !data->valid) {
212 for (nr = 0; nr < 2; nr++) {
213 data->pwm[nr] = f75375_read8(client,
214 F75375_REG_FAN_PWM_DUTY(nr));
215 /* assign MSB, therefore shift it by 8 bits */
216 data->temp11[nr] =
217 f75375_read8(client, F75375_REG_TEMP(nr)) << 8;
218 if (data->kind == f75387)
219 /* merge F75387's temperature LSB (11-bit) */
220 data->temp11[nr] |=
221 f75375_read8(client,
222 F75387_REG_TEMP11_LSB(nr));
223 data->fan[nr] =
224 f75375_read16(client, F75375_REG_FAN(nr));
225 }
226 for (nr = 0; nr < 4; nr++)
227 data->in[nr] =
228 f75375_read8(client, F75375_REG_VOLT(nr));
229
230 data->last_updated = jiffies;
231 data->valid = true;
232 }
233
234 mutex_unlock(&data->update_lock);
235 return data;
236}
237
238static inline u16 rpm_from_reg(u16 reg)
239{
240 if (reg == 0 || reg == 0xffff)
241 return 0;
242 return 1500000 / reg;
243}
244
245static inline u16 rpm_to_reg(int rpm)
246{
247 if (rpm < 367 || rpm > 0xffff)
248 return 0xffff;
249 return 1500000 / rpm;
250}
251
252static bool duty_mode_enabled(u8 pwm_enable)
253{
254 switch (pwm_enable) {
255 case 0: /* Manual, duty mode (full speed) */
256 case 1: /* Manual, duty mode */
257 case 4: /* Auto, duty mode */
258 return true;
259 case 2: /* Auto, speed mode */
260 case 3: /* Manual, speed mode */
261 return false;
262 default:
263 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
264 return true;
265 }
266}
267
268static bool auto_mode_enabled(u8 pwm_enable)
269{
270 switch (pwm_enable) {
271 case 0: /* Manual, duty mode (full speed) */
272 case 1: /* Manual, duty mode */
273 case 3: /* Manual, speed mode */
274 return false;
275 case 2: /* Auto, speed mode */
276 case 4: /* Auto, duty mode */
277 return true;
278 default:
279 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
280 return false;
281 }
282}
283
284static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
285 const char *buf, size_t count)
286{
287 int nr = to_sensor_dev_attr(attr)->index;
288 struct i2c_client *client = to_i2c_client(dev);
289 struct f75375_data *data = i2c_get_clientdata(client);
290 unsigned long val;
291 int err;
292
293 err = kstrtoul(buf, 10, &val);
294 if (err < 0)
295 return err;
296
297 mutex_lock(&data->update_lock);
298 data->fan_min[nr] = rpm_to_reg(val);
299 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
300 mutex_unlock(&data->update_lock);
301 return count;
302}
303
304static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
305 const char *buf, size_t count)
306{
307 int nr = to_sensor_dev_attr(attr)->index;
308 struct i2c_client *client = to_i2c_client(dev);
309 struct f75375_data *data = i2c_get_clientdata(client);
310 unsigned long val;
311 int err;
312
313 err = kstrtoul(buf, 10, &val);
314 if (err < 0)
315 return err;
316
317 if (auto_mode_enabled(data->pwm_enable[nr]))
318 return -EINVAL;
319 if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr]))
320 return -EINVAL;
321
322 mutex_lock(&data->update_lock);
323 data->fan_target[nr] = rpm_to_reg(val);
324 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
325 mutex_unlock(&data->update_lock);
326 return count;
327}
328
329static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
330 const char *buf, size_t count)
331{
332 int nr = to_sensor_dev_attr(attr)->index;
333 struct i2c_client *client = to_i2c_client(dev);
334 struct f75375_data *data = i2c_get_clientdata(client);
335 unsigned long val;
336 int err;
337
338 err = kstrtoul(buf, 10, &val);
339 if (err < 0)
340 return err;
341
342 if (auto_mode_enabled(data->pwm_enable[nr]) ||
343 !duty_mode_enabled(data->pwm_enable[nr]))
344 return -EINVAL;
345
346 mutex_lock(&data->update_lock);
347 data->pwm[nr] = clamp_val(val, 0, 255);
348 f75375_write_pwm(client, nr);
349 mutex_unlock(&data->update_lock);
350 return count;
351}
352
353static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
354 *attr, char *buf)
355{
356 int nr = to_sensor_dev_attr(attr)->index;
357 struct f75375_data *data = f75375_update_device(dev);
358 return sprintf(buf, "%d\n", data->pwm_enable[nr]);
359}
360
361static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
362{
363 struct f75375_data *data = i2c_get_clientdata(client);
364 u8 fanmode;
365
366 if (val < 0 || val > 4)
367 return -EINVAL;
368
369 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
370 if (data->kind == f75387) {
371 /* For now, deny dangerous toggling of duty mode */
372 if (duty_mode_enabled(data->pwm_enable[nr]) !=
373 duty_mode_enabled(val))
374 return -EOPNOTSUPP;
375 /* clear each fanX_mode bit before setting them properly */
376 fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr));
377 fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr));
378 switch (val) {
379 case 0: /* full speed */
380 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
381 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
382 data->pwm[nr] = 255;
383 break;
384 case 1: /* PWM */
385 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
386 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
387 break;
388 case 2: /* Automatic, speed mode */
389 break;
390 case 3: /* fan speed */
391 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
392 break;
393 case 4: /* Automatic, pwm */
394 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
395 break;
396 }
397 } else {
398 /* clear each fanX_mode bit before setting them properly */
399 fanmode &= ~(3 << FAN_CTRL_MODE(nr));
400 switch (val) {
401 case 0: /* full speed */
402 fanmode |= (3 << FAN_CTRL_MODE(nr));
403 data->pwm[nr] = 255;
404 break;
405 case 1: /* PWM */
406 fanmode |= (3 << FAN_CTRL_MODE(nr));
407 break;
408 case 2: /* AUTOMATIC*/
409 fanmode |= (1 << FAN_CTRL_MODE(nr));
410 break;
411 case 3: /* fan speed */
412 break;
413 case 4: /* Automatic pwm */
414 return -EINVAL;
415 }
416 }
417
418 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
419 data->pwm_enable[nr] = val;
420 if (val == 0)
421 f75375_write_pwm(client, nr);
422 return 0;
423}
424
425static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
426 const char *buf, size_t count)
427{
428 int nr = to_sensor_dev_attr(attr)->index;
429 struct i2c_client *client = to_i2c_client(dev);
430 struct f75375_data *data = i2c_get_clientdata(client);
431 unsigned long val;
432 int err;
433
434 err = kstrtoul(buf, 10, &val);
435 if (err < 0)
436 return err;
437
438 mutex_lock(&data->update_lock);
439 err = set_pwm_enable_direct(client, nr, val);
440 mutex_unlock(&data->update_lock);
441 return err ? err : count;
442}
443
444static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
445 const char *buf, size_t count)
446{
447 int nr = to_sensor_dev_attr(attr)->index;
448 struct i2c_client *client = to_i2c_client(dev);
449 struct f75375_data *data = i2c_get_clientdata(client);
450 unsigned long val;
451 int err;
452 u8 conf;
453 char reg, ctrl;
454
455 err = kstrtoul(buf, 10, &val);
456 if (err < 0)
457 return err;
458
459 if (!(val == 0 || val == 1))
460 return -EINVAL;
461
462 /* F75373 does not support DC (linear voltage) fan control mode */
463 if (data->kind == f75373 && val == 0)
464 return -EINVAL;
465
466 /* take care for different registers */
467 if (data->kind == f75387) {
468 reg = F75375_REG_FAN_TIMER;
469 ctrl = F75387_FAN_CTRL_LINEAR(nr);
470 } else {
471 reg = F75375_REG_CONFIG1;
472 ctrl = F75375_FAN_CTRL_LINEAR(nr);
473 }
474
475 mutex_lock(&data->update_lock);
476 conf = f75375_read8(client, reg);
477 conf &= ~(1 << ctrl);
478
479 if (val == 0)
480 conf |= (1 << ctrl);
481
482 f75375_write8(client, reg, conf);
483 data->pwm_mode[nr] = val;
484 mutex_unlock(&data->update_lock);
485 return count;
486}
487
488static ssize_t show_pwm(struct device *dev, struct device_attribute
489 *attr, char *buf)
490{
491 int nr = to_sensor_dev_attr(attr)->index;
492 struct f75375_data *data = f75375_update_device(dev);
493 return sprintf(buf, "%d\n", data->pwm[nr]);
494}
495
496static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
497 *attr, char *buf)
498{
499 int nr = to_sensor_dev_attr(attr)->index;
500 struct f75375_data *data = f75375_update_device(dev);
501 return sprintf(buf, "%d\n", data->pwm_mode[nr]);
502}
503
504#define VOLT_FROM_REG(val) ((val) * 8)
505#define VOLT_TO_REG(val) ((val) / 8)
506
507static ssize_t show_in(struct device *dev, struct device_attribute *attr,
508 char *buf)
509{
510 int nr = to_sensor_dev_attr(attr)->index;
511 struct f75375_data *data = f75375_update_device(dev);
512 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
513}
514
515static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
516 char *buf)
517{
518 int nr = to_sensor_dev_attr(attr)->index;
519 struct f75375_data *data = f75375_update_device(dev);
520 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
521}
522
523static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
524 char *buf)
525{
526 int nr = to_sensor_dev_attr(attr)->index;
527 struct f75375_data *data = f75375_update_device(dev);
528 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
529}
530
531static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
532 const char *buf, size_t count)
533{
534 int nr = to_sensor_dev_attr(attr)->index;
535 struct i2c_client *client = to_i2c_client(dev);
536 struct f75375_data *data = i2c_get_clientdata(client);
537 unsigned long val;
538 int err;
539
540 err = kstrtoul(buf, 10, &val);
541 if (err < 0)
542 return err;
543
544 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
545 mutex_lock(&data->update_lock);
546 data->in_max[nr] = val;
547 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
548 mutex_unlock(&data->update_lock);
549 return count;
550}
551
552static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
553 const char *buf, size_t count)
554{
555 int nr = to_sensor_dev_attr(attr)->index;
556 struct i2c_client *client = to_i2c_client(dev);
557 struct f75375_data *data = i2c_get_clientdata(client);
558 unsigned long val;
559 int err;
560
561 err = kstrtoul(buf, 10, &val);
562 if (err < 0)
563 return err;
564
565 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
566 mutex_lock(&data->update_lock);
567 data->in_min[nr] = val;
568 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
569 mutex_unlock(&data->update_lock);
570 return count;
571}
572#define TEMP_FROM_REG(val) ((val) * 1000)
573#define TEMP_TO_REG(val) ((val) / 1000)
574#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
575
576static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
577 char *buf)
578{
579 int nr = to_sensor_dev_attr(attr)->index;
580 struct f75375_data *data = f75375_update_device(dev);
581 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
582}
583
584static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
585 char *buf)
586{
587 int nr = to_sensor_dev_attr(attr)->index;
588 struct f75375_data *data = f75375_update_device(dev);
589 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
590}
591
592static ssize_t show_temp_max_hyst(struct device *dev,
593 struct device_attribute *attr, char *buf)
594{
595 int nr = to_sensor_dev_attr(attr)->index;
596 struct f75375_data *data = f75375_update_device(dev);
597 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
598}
599
600static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
601 const char *buf, size_t count)
602{
603 int nr = to_sensor_dev_attr(attr)->index;
604 struct i2c_client *client = to_i2c_client(dev);
605 struct f75375_data *data = i2c_get_clientdata(client);
606 unsigned long val;
607 int err;
608
609 err = kstrtoul(buf, 10, &val);
610 if (err < 0)
611 return err;
612
613 val = clamp_val(TEMP_TO_REG(val), 0, 127);
614 mutex_lock(&data->update_lock);
615 data->temp_high[nr] = val;
616 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
617 mutex_unlock(&data->update_lock);
618 return count;
619}
620
621static ssize_t set_temp_max_hyst(struct device *dev,
622 struct device_attribute *attr, const char *buf, size_t count)
623{
624 int nr = to_sensor_dev_attr(attr)->index;
625 struct i2c_client *client = to_i2c_client(dev);
626 struct f75375_data *data = i2c_get_clientdata(client);
627 unsigned long val;
628 int err;
629
630 err = kstrtoul(buf, 10, &val);
631 if (err < 0)
632 return err;
633
634 val = clamp_val(TEMP_TO_REG(val), 0, 127);
635 mutex_lock(&data->update_lock);
636 data->temp_max_hyst[nr] = val;
637 f75375_write8(client, F75375_REG_TEMP_HYST(nr),
638 data->temp_max_hyst[nr]);
639 mutex_unlock(&data->update_lock);
640 return count;
641}
642
643#define show_fan(thing) \
644static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
645 char *buf)\
646{\
647 int nr = to_sensor_dev_attr(attr)->index;\
648 struct f75375_data *data = f75375_update_device(dev); \
649 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
650}
651
652show_fan(fan);
653show_fan(fan_min);
654show_fan(fan_max);
655show_fan(fan_target);
656
657static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
658static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
659 show_in_max, set_in_max, 0);
660static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
661 show_in_min, set_in_min, 0);
662static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
663static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
664 show_in_max, set_in_max, 1);
665static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
666 show_in_min, set_in_min, 1);
667static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
668static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
669 show_in_max, set_in_max, 2);
670static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
671 show_in_min, set_in_min, 2);
672static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
673static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
674 show_in_max, set_in_max, 3);
675static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
676 show_in_min, set_in_min, 3);
677static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
678static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
679 show_temp_max_hyst, set_temp_max_hyst, 0);
680static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
681 show_temp_max, set_temp_max, 0);
682static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
683static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
684 show_temp_max_hyst, set_temp_max_hyst, 1);
685static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
686 show_temp_max, set_temp_max, 1);
687static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
688static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
689static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
690 show_fan_min, set_fan_min, 0);
691static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
692 show_fan_target, set_fan_target, 0);
693static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
694static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
695static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
696 show_fan_min, set_fan_min, 1);
697static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
698 show_fan_target, set_fan_target, 1);
699static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
700 show_pwm, set_pwm, 0);
701static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
702 show_pwm_enable, set_pwm_enable, 0);
703static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
704 show_pwm_mode, set_pwm_mode, 0);
705static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
706 show_pwm, set_pwm, 1);
707static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
708 show_pwm_enable, set_pwm_enable, 1);
709static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
710 show_pwm_mode, set_pwm_mode, 1);
711
712static struct attribute *f75375_attributes[] = {
713 &sensor_dev_attr_temp1_input.dev_attr.attr,
714 &sensor_dev_attr_temp1_max.dev_attr.attr,
715 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
716 &sensor_dev_attr_temp2_input.dev_attr.attr,
717 &sensor_dev_attr_temp2_max.dev_attr.attr,
718 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
719 &sensor_dev_attr_fan1_input.dev_attr.attr,
720 &sensor_dev_attr_fan1_max.dev_attr.attr,
721 &sensor_dev_attr_fan1_min.dev_attr.attr,
722 &sensor_dev_attr_fan1_target.dev_attr.attr,
723 &sensor_dev_attr_fan2_input.dev_attr.attr,
724 &sensor_dev_attr_fan2_max.dev_attr.attr,
725 &sensor_dev_attr_fan2_min.dev_attr.attr,
726 &sensor_dev_attr_fan2_target.dev_attr.attr,
727 &sensor_dev_attr_pwm1.dev_attr.attr,
728 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
729 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
730 &sensor_dev_attr_pwm2.dev_attr.attr,
731 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
732 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
733 &sensor_dev_attr_in0_input.dev_attr.attr,
734 &sensor_dev_attr_in0_max.dev_attr.attr,
735 &sensor_dev_attr_in0_min.dev_attr.attr,
736 &sensor_dev_attr_in1_input.dev_attr.attr,
737 &sensor_dev_attr_in1_max.dev_attr.attr,
738 &sensor_dev_attr_in1_min.dev_attr.attr,
739 &sensor_dev_attr_in2_input.dev_attr.attr,
740 &sensor_dev_attr_in2_max.dev_attr.attr,
741 &sensor_dev_attr_in2_min.dev_attr.attr,
742 &sensor_dev_attr_in3_input.dev_attr.attr,
743 &sensor_dev_attr_in3_max.dev_attr.attr,
744 &sensor_dev_attr_in3_min.dev_attr.attr,
745 NULL
746};
747
748static const struct attribute_group f75375_group = {
749 .attrs = f75375_attributes,
750};
751
752static void f75375_init(struct i2c_client *client, struct f75375_data *data,
753 struct f75375s_platform_data *f75375s_pdata)
754{
755 int nr;
756
757 if (!f75375s_pdata) {
758 u8 conf, mode;
759 int nr;
760
761 conf = f75375_read8(client, F75375_REG_CONFIG1);
762 mode = f75375_read8(client, F75375_REG_FAN_TIMER);
763 for (nr = 0; nr < 2; nr++) {
764 if (data->kind == f75387) {
765 bool manu, duty;
766
767 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
768 data->pwm_mode[nr] = 1;
769
770 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1);
771 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1);
772 if (!manu && duty)
773 /* auto, pwm */
774 data->pwm_enable[nr] = 4;
775 else if (manu && !duty)
776 /* manual, speed */
777 data->pwm_enable[nr] = 3;
778 else if (!manu && !duty)
779 /* automatic, speed */
780 data->pwm_enable[nr] = 2;
781 else
782 /* manual, pwm */
783 data->pwm_enable[nr] = 1;
784 } else {
785 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr))))
786 data->pwm_mode[nr] = 1;
787
788 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) {
789 case 0: /* speed */
790 data->pwm_enable[nr] = 3;
791 break;
792 case 1: /* automatic */
793 data->pwm_enable[nr] = 2;
794 break;
795 default: /* manual */
796 data->pwm_enable[nr] = 1;
797 break;
798 }
799 }
800 }
801 return;
802 }
803
804 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
805 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
806 for (nr = 0; nr < 2; nr++) {
807 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
808 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
809 continue;
810 data->pwm[nr] = clamp_val(f75375s_pdata->pwm[nr], 0, 255);
811 f75375_write_pwm(client, nr);
812 }
813
814}
815
816static int f75375_probe(struct i2c_client *client)
817{
818 struct f75375_data *data;
819 struct f75375s_platform_data *f75375s_pdata =
820 dev_get_platdata(&client->dev);
821 int err;
822
823 if (!i2c_check_functionality(client->adapter,
824 I2C_FUNC_SMBUS_BYTE_DATA))
825 return -EIO;
826 data = devm_kzalloc(&client->dev, sizeof(struct f75375_data),
827 GFP_KERNEL);
828 if (!data)
829 return -ENOMEM;
830
831 i2c_set_clientdata(client, data);
832 mutex_init(&data->update_lock);
833 data->kind = i2c_match_id(f75375_id, client)->driver_data;
834
835 err = sysfs_create_group(&client->dev.kobj, &f75375_group);
836 if (err)
837 return err;
838
839 if (data->kind != f75373) {
840 err = sysfs_chmod_file(&client->dev.kobj,
841 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
842 S_IRUGO | S_IWUSR);
843 if (err)
844 goto exit_remove;
845 err = sysfs_chmod_file(&client->dev.kobj,
846 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
847 S_IRUGO | S_IWUSR);
848 if (err)
849 goto exit_remove;
850 }
851
852 data->hwmon_dev = hwmon_device_register(&client->dev);
853 if (IS_ERR(data->hwmon_dev)) {
854 err = PTR_ERR(data->hwmon_dev);
855 goto exit_remove;
856 }
857
858 f75375_init(client, data, f75375s_pdata);
859
860 return 0;
861
862exit_remove:
863 sysfs_remove_group(&client->dev.kobj, &f75375_group);
864 return err;
865}
866
867static void f75375_remove(struct i2c_client *client)
868{
869 struct f75375_data *data = i2c_get_clientdata(client);
870 hwmon_device_unregister(data->hwmon_dev);
871 sysfs_remove_group(&client->dev.kobj, &f75375_group);
872}
873
874/* Return 0 if detection is successful, -ENODEV otherwise */
875static int f75375_detect(struct i2c_client *client,
876 struct i2c_board_info *info)
877{
878 struct i2c_adapter *adapter = client->adapter;
879 u16 vendid, chipid;
880 u8 version;
881 const char *name;
882
883 vendid = f75375_read16(client, F75375_REG_VENDOR);
884 chipid = f75375_read16(client, F75375_CHIP_ID);
885 if (vendid != 0x1934)
886 return -ENODEV;
887
888 if (chipid == 0x0306)
889 name = "f75375";
890 else if (chipid == 0x0204)
891 name = "f75373";
892 else if (chipid == 0x0410)
893 name = "f75387";
894 else
895 return -ENODEV;
896
897 version = f75375_read8(client, F75375_REG_VERSION);
898 dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
899 strscpy(info->type, name, I2C_NAME_SIZE);
900
901 return 0;
902}
903
904module_i2c_driver(f75375_driver);
905
906MODULE_AUTHOR("Riku Voipio");
907MODULE_LICENSE("GPL");
908MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");
1/*
2 * f75375s.c - driver for the Fintek F75375/SP, F75373 and
3 * F75387SG/RG hardware monitoring features
4 * Copyright (C) 2006-2007 Riku Voipio
5 *
6 * Datasheets available at:
7 *
8 * f75375:
9 * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf
10 *
11 * f75373:
12 * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf
13 *
14 * f75387:
15 * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 *
31 */
32
33#include <linux/module.h>
34#include <linux/jiffies.h>
35#include <linux/hwmon.h>
36#include <linux/hwmon-sysfs.h>
37#include <linux/i2c.h>
38#include <linux/err.h>
39#include <linux/mutex.h>
40#include <linux/f75375s.h>
41#include <linux/slab.h>
42
43/* Addresses to scan */
44static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
45
46enum chips { f75373, f75375, f75387 };
47
48/* Fintek F75375 registers */
49#define F75375_REG_CONFIG0 0x0
50#define F75375_REG_CONFIG1 0x1
51#define F75375_REG_CONFIG2 0x2
52#define F75375_REG_CONFIG3 0x3
53#define F75375_REG_ADDR 0x4
54#define F75375_REG_INTR 0x31
55#define F75375_CHIP_ID 0x5A
56#define F75375_REG_VERSION 0x5C
57#define F75375_REG_VENDOR 0x5D
58#define F75375_REG_FAN_TIMER 0x60
59
60#define F75375_REG_VOLT(nr) (0x10 + (nr))
61#define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2)
62#define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2)
63
64#define F75375_REG_TEMP(nr) (0x14 + (nr))
65#define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr))
66#define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2)
67#define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2)
68
69#define F75375_REG_FAN(nr) (0x16 + (nr) * 2)
70#define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2)
71#define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10)
72#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10)
73#define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10)
74
75#define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10)
76#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
77#define F75375_REG_FAN_B_SPEED(nr, step) \
78 ((0xA5 + (nr) * 0x10) + (step) * 2)
79
80#define F75375_REG_PWM1_RAISE_DUTY 0x69
81#define F75375_REG_PWM2_RAISE_DUTY 0x6A
82#define F75375_REG_PWM1_DROP_DUTY 0x6B
83#define F75375_REG_PWM2_DROP_DUTY 0x6C
84
85#define F75375_FAN_CTRL_LINEAR(nr) (4 + nr)
86#define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4))
87#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
88#define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4))
89#define F75387_FAN_MANU_MODE(nr) ((nr) * 4)
90
91/*
92 * Data structures and manipulation thereof
93 */
94
95struct f75375_data {
96 unsigned short addr;
97 struct device *hwmon_dev;
98
99 const char *name;
100 int kind;
101 struct mutex update_lock; /* protect register access */
102 char valid;
103 unsigned long last_updated; /* In jiffies */
104 unsigned long last_limits; /* In jiffies */
105
106 /* Register values */
107 u8 in[4];
108 u8 in_max[4];
109 u8 in_min[4];
110 u16 fan[2];
111 u16 fan_min[2];
112 u16 fan_max[2];
113 u16 fan_target[2];
114 u8 fan_timer;
115 u8 pwm[2];
116 u8 pwm_mode[2];
117 u8 pwm_enable[2];
118 /*
119 * f75387: For remote temperature reading, it uses signed 11-bit
120 * values with LSB = 0.125 degree Celsius, left-justified in 16-bit
121 * registers. For original 8-bit temp readings, the LSB just is 0.
122 */
123 s16 temp11[2];
124 s8 temp_high[2];
125 s8 temp_max_hyst[2];
126};
127
128static int f75375_detect(struct i2c_client *client,
129 struct i2c_board_info *info);
130static int f75375_probe(struct i2c_client *client,
131 const struct i2c_device_id *id);
132static int f75375_remove(struct i2c_client *client);
133
134static const struct i2c_device_id f75375_id[] = {
135 { "f75373", f75373 },
136 { "f75375", f75375 },
137 { "f75387", f75387 },
138 { }
139};
140MODULE_DEVICE_TABLE(i2c, f75375_id);
141
142static struct i2c_driver f75375_driver = {
143 .class = I2C_CLASS_HWMON,
144 .driver = {
145 .name = "f75375",
146 },
147 .probe = f75375_probe,
148 .remove = f75375_remove,
149 .id_table = f75375_id,
150 .detect = f75375_detect,
151 .address_list = normal_i2c,
152};
153
154static inline int f75375_read8(struct i2c_client *client, u8 reg)
155{
156 return i2c_smbus_read_byte_data(client, reg);
157}
158
159/* in most cases, should be called while holding update_lock */
160static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
161{
162 return (i2c_smbus_read_byte_data(client, reg) << 8)
163 | i2c_smbus_read_byte_data(client, reg + 1);
164}
165
166static inline void f75375_write8(struct i2c_client *client, u8 reg,
167 u8 value)
168{
169 i2c_smbus_write_byte_data(client, reg, value);
170}
171
172static inline void f75375_write16(struct i2c_client *client, u8 reg,
173 u16 value)
174{
175 int err = i2c_smbus_write_byte_data(client, reg, (value >> 8));
176 if (err)
177 return;
178 i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
179}
180
181static void f75375_write_pwm(struct i2c_client *client, int nr)
182{
183 struct f75375_data *data = i2c_get_clientdata(client);
184 if (data->kind == f75387)
185 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->pwm[nr]);
186 else
187 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
188 data->pwm[nr]);
189}
190
191static struct f75375_data *f75375_update_device(struct device *dev)
192{
193 struct i2c_client *client = to_i2c_client(dev);
194 struct f75375_data *data = i2c_get_clientdata(client);
195 int nr;
196
197 mutex_lock(&data->update_lock);
198
199 /* Limit registers cache is refreshed after 60 seconds */
200 if (time_after(jiffies, data->last_limits + 60 * HZ)
201 || !data->valid) {
202 for (nr = 0; nr < 2; nr++) {
203 data->temp_high[nr] =
204 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
205 data->temp_max_hyst[nr] =
206 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
207 data->fan_max[nr] =
208 f75375_read16(client, F75375_REG_FAN_FULL(nr));
209 data->fan_min[nr] =
210 f75375_read16(client, F75375_REG_FAN_MIN(nr));
211 data->fan_target[nr] =
212 f75375_read16(client, F75375_REG_FAN_EXP(nr));
213 }
214 for (nr = 0; nr < 4; nr++) {
215 data->in_max[nr] =
216 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
217 data->in_min[nr] =
218 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
219 }
220 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
221 data->last_limits = jiffies;
222 }
223
224 /* Measurement registers cache is refreshed after 2 second */
225 if (time_after(jiffies, data->last_updated + 2 * HZ)
226 || !data->valid) {
227 for (nr = 0; nr < 2; nr++) {
228 data->pwm[nr] = f75375_read8(client,
229 F75375_REG_FAN_PWM_DUTY(nr));
230 /* assign MSB, therefore shift it by 8 bits */
231 data->temp11[nr] =
232 f75375_read8(client, F75375_REG_TEMP(nr)) << 8;
233 if (data->kind == f75387)
234 /* merge F75387's temperature LSB (11-bit) */
235 data->temp11[nr] |=
236 f75375_read8(client,
237 F75387_REG_TEMP11_LSB(nr));
238 data->fan[nr] =
239 f75375_read16(client, F75375_REG_FAN(nr));
240 }
241 for (nr = 0; nr < 4; nr++)
242 data->in[nr] =
243 f75375_read8(client, F75375_REG_VOLT(nr));
244
245 data->last_updated = jiffies;
246 data->valid = 1;
247 }
248
249 mutex_unlock(&data->update_lock);
250 return data;
251}
252
253static inline u16 rpm_from_reg(u16 reg)
254{
255 if (reg == 0 || reg == 0xffff)
256 return 0;
257 return 1500000 / reg;
258}
259
260static inline u16 rpm_to_reg(int rpm)
261{
262 if (rpm < 367 || rpm > 0xffff)
263 return 0xffff;
264 return 1500000 / rpm;
265}
266
267static bool duty_mode_enabled(u8 pwm_enable)
268{
269 switch (pwm_enable) {
270 case 0: /* Manual, duty mode (full speed) */
271 case 1: /* Manual, duty mode */
272 case 4: /* Auto, duty mode */
273 return true;
274 case 2: /* Auto, speed mode */
275 case 3: /* Manual, speed mode */
276 return false;
277 default:
278 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
279 return true;
280 }
281}
282
283static bool auto_mode_enabled(u8 pwm_enable)
284{
285 switch (pwm_enable) {
286 case 0: /* Manual, duty mode (full speed) */
287 case 1: /* Manual, duty mode */
288 case 3: /* Manual, speed mode */
289 return false;
290 case 2: /* Auto, speed mode */
291 case 4: /* Auto, duty mode */
292 return true;
293 default:
294 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
295 return false;
296 }
297}
298
299static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
300 const char *buf, size_t count)
301{
302 int nr = to_sensor_dev_attr(attr)->index;
303 struct i2c_client *client = to_i2c_client(dev);
304 struct f75375_data *data = i2c_get_clientdata(client);
305 unsigned long val;
306 int err;
307
308 err = kstrtoul(buf, 10, &val);
309 if (err < 0)
310 return err;
311
312 mutex_lock(&data->update_lock);
313 data->fan_min[nr] = rpm_to_reg(val);
314 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
315 mutex_unlock(&data->update_lock);
316 return count;
317}
318
319static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
320 const char *buf, size_t count)
321{
322 int nr = to_sensor_dev_attr(attr)->index;
323 struct i2c_client *client = to_i2c_client(dev);
324 struct f75375_data *data = i2c_get_clientdata(client);
325 unsigned long val;
326 int err;
327
328 err = kstrtoul(buf, 10, &val);
329 if (err < 0)
330 return err;
331
332 if (auto_mode_enabled(data->pwm_enable[nr]))
333 return -EINVAL;
334 if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr]))
335 return -EINVAL;
336
337 mutex_lock(&data->update_lock);
338 data->fan_target[nr] = rpm_to_reg(val);
339 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
340 mutex_unlock(&data->update_lock);
341 return count;
342}
343
344static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
345 const char *buf, size_t count)
346{
347 int nr = to_sensor_dev_attr(attr)->index;
348 struct i2c_client *client = to_i2c_client(dev);
349 struct f75375_data *data = i2c_get_clientdata(client);
350 unsigned long val;
351 int err;
352
353 err = kstrtoul(buf, 10, &val);
354 if (err < 0)
355 return err;
356
357 if (auto_mode_enabled(data->pwm_enable[nr]) ||
358 !duty_mode_enabled(data->pwm_enable[nr]))
359 return -EINVAL;
360
361 mutex_lock(&data->update_lock);
362 data->pwm[nr] = clamp_val(val, 0, 255);
363 f75375_write_pwm(client, nr);
364 mutex_unlock(&data->update_lock);
365 return count;
366}
367
368static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
369 *attr, char *buf)
370{
371 int nr = to_sensor_dev_attr(attr)->index;
372 struct f75375_data *data = f75375_update_device(dev);
373 return sprintf(buf, "%d\n", data->pwm_enable[nr]);
374}
375
376static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
377{
378 struct f75375_data *data = i2c_get_clientdata(client);
379 u8 fanmode;
380
381 if (val < 0 || val > 4)
382 return -EINVAL;
383
384 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
385 if (data->kind == f75387) {
386 /* For now, deny dangerous toggling of duty mode */
387 if (duty_mode_enabled(data->pwm_enable[nr]) !=
388 duty_mode_enabled(val))
389 return -EOPNOTSUPP;
390 /* clear each fanX_mode bit before setting them properly */
391 fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr));
392 fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr));
393 switch (val) {
394 case 0: /* full speed */
395 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
396 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
397 data->pwm[nr] = 255;
398 break;
399 case 1: /* PWM */
400 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
401 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
402 break;
403 case 2: /* Automatic, speed mode */
404 break;
405 case 3: /* fan speed */
406 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
407 break;
408 case 4: /* Automatic, pwm */
409 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
410 break;
411 }
412 } else {
413 /* clear each fanX_mode bit before setting them properly */
414 fanmode &= ~(3 << FAN_CTRL_MODE(nr));
415 switch (val) {
416 case 0: /* full speed */
417 fanmode |= (3 << FAN_CTRL_MODE(nr));
418 data->pwm[nr] = 255;
419 break;
420 case 1: /* PWM */
421 fanmode |= (3 << FAN_CTRL_MODE(nr));
422 break;
423 case 2: /* AUTOMATIC*/
424 fanmode |= (1 << FAN_CTRL_MODE(nr));
425 break;
426 case 3: /* fan speed */
427 break;
428 case 4: /* Automatic pwm */
429 return -EINVAL;
430 }
431 }
432
433 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
434 data->pwm_enable[nr] = val;
435 if (val == 0)
436 f75375_write_pwm(client, nr);
437 return 0;
438}
439
440static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
441 const char *buf, size_t count)
442{
443 int nr = to_sensor_dev_attr(attr)->index;
444 struct i2c_client *client = to_i2c_client(dev);
445 struct f75375_data *data = i2c_get_clientdata(client);
446 unsigned long val;
447 int err;
448
449 err = kstrtoul(buf, 10, &val);
450 if (err < 0)
451 return err;
452
453 mutex_lock(&data->update_lock);
454 err = set_pwm_enable_direct(client, nr, val);
455 mutex_unlock(&data->update_lock);
456 return err ? err : count;
457}
458
459static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
460 const char *buf, size_t count)
461{
462 int nr = to_sensor_dev_attr(attr)->index;
463 struct i2c_client *client = to_i2c_client(dev);
464 struct f75375_data *data = i2c_get_clientdata(client);
465 unsigned long val;
466 int err;
467 u8 conf;
468 char reg, ctrl;
469
470 err = kstrtoul(buf, 10, &val);
471 if (err < 0)
472 return err;
473
474 if (!(val == 0 || val == 1))
475 return -EINVAL;
476
477 /* F75373 does not support DC (linear voltage) fan control mode */
478 if (data->kind == f75373 && val == 0)
479 return -EINVAL;
480
481 /* take care for different registers */
482 if (data->kind == f75387) {
483 reg = F75375_REG_FAN_TIMER;
484 ctrl = F75387_FAN_CTRL_LINEAR(nr);
485 } else {
486 reg = F75375_REG_CONFIG1;
487 ctrl = F75375_FAN_CTRL_LINEAR(nr);
488 }
489
490 mutex_lock(&data->update_lock);
491 conf = f75375_read8(client, reg);
492 conf &= ~(1 << ctrl);
493
494 if (val == 0)
495 conf |= (1 << ctrl);
496
497 f75375_write8(client, reg, conf);
498 data->pwm_mode[nr] = val;
499 mutex_unlock(&data->update_lock);
500 return count;
501}
502
503static ssize_t show_pwm(struct device *dev, struct device_attribute
504 *attr, char *buf)
505{
506 int nr = to_sensor_dev_attr(attr)->index;
507 struct f75375_data *data = f75375_update_device(dev);
508 return sprintf(buf, "%d\n", data->pwm[nr]);
509}
510
511static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
512 *attr, char *buf)
513{
514 int nr = to_sensor_dev_attr(attr)->index;
515 struct f75375_data *data = f75375_update_device(dev);
516 return sprintf(buf, "%d\n", data->pwm_mode[nr]);
517}
518
519#define VOLT_FROM_REG(val) ((val) * 8)
520#define VOLT_TO_REG(val) ((val) / 8)
521
522static ssize_t show_in(struct device *dev, struct device_attribute *attr,
523 char *buf)
524{
525 int nr = to_sensor_dev_attr(attr)->index;
526 struct f75375_data *data = f75375_update_device(dev);
527 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
528}
529
530static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
531 char *buf)
532{
533 int nr = to_sensor_dev_attr(attr)->index;
534 struct f75375_data *data = f75375_update_device(dev);
535 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
536}
537
538static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
539 char *buf)
540{
541 int nr = to_sensor_dev_attr(attr)->index;
542 struct f75375_data *data = f75375_update_device(dev);
543 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
544}
545
546static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
547 const char *buf, size_t count)
548{
549 int nr = to_sensor_dev_attr(attr)->index;
550 struct i2c_client *client = to_i2c_client(dev);
551 struct f75375_data *data = i2c_get_clientdata(client);
552 unsigned long val;
553 int err;
554
555 err = kstrtoul(buf, 10, &val);
556 if (err < 0)
557 return err;
558
559 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
560 mutex_lock(&data->update_lock);
561 data->in_max[nr] = val;
562 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
563 mutex_unlock(&data->update_lock);
564 return count;
565}
566
567static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
568 const char *buf, size_t count)
569{
570 int nr = to_sensor_dev_attr(attr)->index;
571 struct i2c_client *client = to_i2c_client(dev);
572 struct f75375_data *data = i2c_get_clientdata(client);
573 unsigned long val;
574 int err;
575
576 err = kstrtoul(buf, 10, &val);
577 if (err < 0)
578 return err;
579
580 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
581 mutex_lock(&data->update_lock);
582 data->in_min[nr] = val;
583 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
584 mutex_unlock(&data->update_lock);
585 return count;
586}
587#define TEMP_FROM_REG(val) ((val) * 1000)
588#define TEMP_TO_REG(val) ((val) / 1000)
589#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
590
591static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
592 char *buf)
593{
594 int nr = to_sensor_dev_attr(attr)->index;
595 struct f75375_data *data = f75375_update_device(dev);
596 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
597}
598
599static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
600 char *buf)
601{
602 int nr = to_sensor_dev_attr(attr)->index;
603 struct f75375_data *data = f75375_update_device(dev);
604 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
605}
606
607static ssize_t show_temp_max_hyst(struct device *dev,
608 struct device_attribute *attr, char *buf)
609{
610 int nr = to_sensor_dev_attr(attr)->index;
611 struct f75375_data *data = f75375_update_device(dev);
612 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
613}
614
615static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
616 const char *buf, size_t count)
617{
618 int nr = to_sensor_dev_attr(attr)->index;
619 struct i2c_client *client = to_i2c_client(dev);
620 struct f75375_data *data = i2c_get_clientdata(client);
621 unsigned long val;
622 int err;
623
624 err = kstrtoul(buf, 10, &val);
625 if (err < 0)
626 return err;
627
628 val = clamp_val(TEMP_TO_REG(val), 0, 127);
629 mutex_lock(&data->update_lock);
630 data->temp_high[nr] = val;
631 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
632 mutex_unlock(&data->update_lock);
633 return count;
634}
635
636static ssize_t set_temp_max_hyst(struct device *dev,
637 struct device_attribute *attr, const char *buf, size_t count)
638{
639 int nr = to_sensor_dev_attr(attr)->index;
640 struct i2c_client *client = to_i2c_client(dev);
641 struct f75375_data *data = i2c_get_clientdata(client);
642 unsigned long val;
643 int err;
644
645 err = kstrtoul(buf, 10, &val);
646 if (err < 0)
647 return err;
648
649 val = clamp_val(TEMP_TO_REG(val), 0, 127);
650 mutex_lock(&data->update_lock);
651 data->temp_max_hyst[nr] = val;
652 f75375_write8(client, F75375_REG_TEMP_HYST(nr),
653 data->temp_max_hyst[nr]);
654 mutex_unlock(&data->update_lock);
655 return count;
656}
657
658#define show_fan(thing) \
659static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
660 char *buf)\
661{\
662 int nr = to_sensor_dev_attr(attr)->index;\
663 struct f75375_data *data = f75375_update_device(dev); \
664 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
665}
666
667show_fan(fan);
668show_fan(fan_min);
669show_fan(fan_max);
670show_fan(fan_target);
671
672static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
673static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
674 show_in_max, set_in_max, 0);
675static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
676 show_in_min, set_in_min, 0);
677static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
678static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
679 show_in_max, set_in_max, 1);
680static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
681 show_in_min, set_in_min, 1);
682static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
683static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
684 show_in_max, set_in_max, 2);
685static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
686 show_in_min, set_in_min, 2);
687static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
688static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
689 show_in_max, set_in_max, 3);
690static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
691 show_in_min, set_in_min, 3);
692static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
693static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
694 show_temp_max_hyst, set_temp_max_hyst, 0);
695static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
696 show_temp_max, set_temp_max, 0);
697static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
698static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
699 show_temp_max_hyst, set_temp_max_hyst, 1);
700static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
701 show_temp_max, set_temp_max, 1);
702static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
703static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
704static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
705 show_fan_min, set_fan_min, 0);
706static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
707 show_fan_target, set_fan_target, 0);
708static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
709static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
710static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
711 show_fan_min, set_fan_min, 1);
712static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
713 show_fan_target, set_fan_target, 1);
714static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
715 show_pwm, set_pwm, 0);
716static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
717 show_pwm_enable, set_pwm_enable, 0);
718static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
719 show_pwm_mode, set_pwm_mode, 0);
720static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
721 show_pwm, set_pwm, 1);
722static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
723 show_pwm_enable, set_pwm_enable, 1);
724static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
725 show_pwm_mode, set_pwm_mode, 1);
726
727static struct attribute *f75375_attributes[] = {
728 &sensor_dev_attr_temp1_input.dev_attr.attr,
729 &sensor_dev_attr_temp1_max.dev_attr.attr,
730 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
731 &sensor_dev_attr_temp2_input.dev_attr.attr,
732 &sensor_dev_attr_temp2_max.dev_attr.attr,
733 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
734 &sensor_dev_attr_fan1_input.dev_attr.attr,
735 &sensor_dev_attr_fan1_max.dev_attr.attr,
736 &sensor_dev_attr_fan1_min.dev_attr.attr,
737 &sensor_dev_attr_fan1_target.dev_attr.attr,
738 &sensor_dev_attr_fan2_input.dev_attr.attr,
739 &sensor_dev_attr_fan2_max.dev_attr.attr,
740 &sensor_dev_attr_fan2_min.dev_attr.attr,
741 &sensor_dev_attr_fan2_target.dev_attr.attr,
742 &sensor_dev_attr_pwm1.dev_attr.attr,
743 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
744 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
745 &sensor_dev_attr_pwm2.dev_attr.attr,
746 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
747 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
748 &sensor_dev_attr_in0_input.dev_attr.attr,
749 &sensor_dev_attr_in0_max.dev_attr.attr,
750 &sensor_dev_attr_in0_min.dev_attr.attr,
751 &sensor_dev_attr_in1_input.dev_attr.attr,
752 &sensor_dev_attr_in1_max.dev_attr.attr,
753 &sensor_dev_attr_in1_min.dev_attr.attr,
754 &sensor_dev_attr_in2_input.dev_attr.attr,
755 &sensor_dev_attr_in2_max.dev_attr.attr,
756 &sensor_dev_attr_in2_min.dev_attr.attr,
757 &sensor_dev_attr_in3_input.dev_attr.attr,
758 &sensor_dev_attr_in3_max.dev_attr.attr,
759 &sensor_dev_attr_in3_min.dev_attr.attr,
760 NULL
761};
762
763static const struct attribute_group f75375_group = {
764 .attrs = f75375_attributes,
765};
766
767static void f75375_init(struct i2c_client *client, struct f75375_data *data,
768 struct f75375s_platform_data *f75375s_pdata)
769{
770 int nr;
771
772 if (!f75375s_pdata) {
773 u8 conf, mode;
774 int nr;
775
776 conf = f75375_read8(client, F75375_REG_CONFIG1);
777 mode = f75375_read8(client, F75375_REG_FAN_TIMER);
778 for (nr = 0; nr < 2; nr++) {
779 if (data->kind == f75387) {
780 bool manu, duty;
781
782 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
783 data->pwm_mode[nr] = 1;
784
785 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1);
786 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1);
787 if (!manu && duty)
788 /* auto, pwm */
789 data->pwm_enable[nr] = 4;
790 else if (manu && !duty)
791 /* manual, speed */
792 data->pwm_enable[nr] = 3;
793 else if (!manu && !duty)
794 /* automatic, speed */
795 data->pwm_enable[nr] = 2;
796 else
797 /* manual, pwm */
798 data->pwm_enable[nr] = 1;
799 } else {
800 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr))))
801 data->pwm_mode[nr] = 1;
802
803 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) {
804 case 0: /* speed */
805 data->pwm_enable[nr] = 3;
806 break;
807 case 1: /* automatic */
808 data->pwm_enable[nr] = 2;
809 break;
810 default: /* manual */
811 data->pwm_enable[nr] = 1;
812 break;
813 }
814 }
815 }
816 return;
817 }
818
819 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
820 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
821 for (nr = 0; nr < 2; nr++) {
822 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
823 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
824 continue;
825 data->pwm[nr] = clamp_val(f75375s_pdata->pwm[nr], 0, 255);
826 f75375_write_pwm(client, nr);
827 }
828
829}
830
831static int f75375_probe(struct i2c_client *client,
832 const struct i2c_device_id *id)
833{
834 struct f75375_data *data;
835 struct f75375s_platform_data *f75375s_pdata =
836 dev_get_platdata(&client->dev);
837 int err;
838
839 if (!i2c_check_functionality(client->adapter,
840 I2C_FUNC_SMBUS_BYTE_DATA))
841 return -EIO;
842 data = devm_kzalloc(&client->dev, sizeof(struct f75375_data),
843 GFP_KERNEL);
844 if (!data)
845 return -ENOMEM;
846
847 i2c_set_clientdata(client, data);
848 mutex_init(&data->update_lock);
849 data->kind = id->driver_data;
850
851 err = sysfs_create_group(&client->dev.kobj, &f75375_group);
852 if (err)
853 return err;
854
855 if (data->kind != f75373) {
856 err = sysfs_chmod_file(&client->dev.kobj,
857 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
858 S_IRUGO | S_IWUSR);
859 if (err)
860 goto exit_remove;
861 err = sysfs_chmod_file(&client->dev.kobj,
862 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
863 S_IRUGO | S_IWUSR);
864 if (err)
865 goto exit_remove;
866 }
867
868 data->hwmon_dev = hwmon_device_register(&client->dev);
869 if (IS_ERR(data->hwmon_dev)) {
870 err = PTR_ERR(data->hwmon_dev);
871 goto exit_remove;
872 }
873
874 f75375_init(client, data, f75375s_pdata);
875
876 return 0;
877
878exit_remove:
879 sysfs_remove_group(&client->dev.kobj, &f75375_group);
880 return err;
881}
882
883static int f75375_remove(struct i2c_client *client)
884{
885 struct f75375_data *data = i2c_get_clientdata(client);
886 hwmon_device_unregister(data->hwmon_dev);
887 sysfs_remove_group(&client->dev.kobj, &f75375_group);
888 return 0;
889}
890
891/* Return 0 if detection is successful, -ENODEV otherwise */
892static int f75375_detect(struct i2c_client *client,
893 struct i2c_board_info *info)
894{
895 struct i2c_adapter *adapter = client->adapter;
896 u16 vendid, chipid;
897 u8 version;
898 const char *name;
899
900 vendid = f75375_read16(client, F75375_REG_VENDOR);
901 chipid = f75375_read16(client, F75375_CHIP_ID);
902 if (vendid != 0x1934)
903 return -ENODEV;
904
905 if (chipid == 0x0306)
906 name = "f75375";
907 else if (chipid == 0x0204)
908 name = "f75373";
909 else if (chipid == 0x0410)
910 name = "f75387";
911 else
912 return -ENODEV;
913
914 version = f75375_read8(client, F75375_REG_VERSION);
915 dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
916 strlcpy(info->type, name, I2C_NAME_SIZE);
917
918 return 0;
919}
920
921module_i2c_driver(f75375_driver);
922
923MODULE_AUTHOR("Riku Voipio");
924MODULE_LICENSE("GPL");
925MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");