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Linux 3.3-rc6
[linux/fpc-iii.git] / drivers / hwmon / f75375s.c
blob6aa5a9fad87930800649fd4e0d17087325539530
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 */
44 static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
45
46 enum 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
95 struct 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
128 static int f75375_detect(struct i2c_client *client,
129 struct i2c_board_info *info);
130 static int f75375_probe(struct i2c_client *client,
131 const struct i2c_device_id *id);
132 static int f75375_remove(struct i2c_client *client);
133
134 static const struct i2c_device_id f75375_id[] = {
135 { "f75373", f75373 },
136 { "f75375", f75375 },
137 { "f75387", f75387 },
138 { }
139 };
140 MODULE_DEVICE_TABLE(i2c, f75375_id);
141
142 static 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
154 static 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 */
160 static 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
166 static 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
172 static 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
181 static 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
191 static 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
253 static inline u16 rpm_from_reg(u16 reg)
254 {
255 if (reg == 0 || reg == 0xffff)
256 return 0;
257 return 1500000 / reg;
258 }
259
260 static inline u16 rpm_to_reg(int rpm)
261 {
262 if (rpm < 367 || rpm > 0xffff)
263 return 0xffff;
264 return 1500000 / rpm;
265 }
266
267 static 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 BUG();
279 }
280 }
281
282 static bool auto_mode_enabled(u8 pwm_enable)
283 {
284 switch (pwm_enable) {
285 case 0: /* Manual, duty mode (full speed) */
286 case 1: /* Manual, duty mode */
287 case 3: /* Manual, speed mode */
288 return false;
289 case 2: /* Auto, speed mode */
290 case 4: /* Auto, duty mode */
291 return true;
292 default:
293 BUG();
294 }
295 }
296
297 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
298 const char *buf, size_t count)
299 {
300 int nr = to_sensor_dev_attr(attr)->index;
301 struct i2c_client *client = to_i2c_client(dev);
302 struct f75375_data *data = i2c_get_clientdata(client);
303 unsigned long val;
304 int err;
305
306 err = kstrtoul(buf, 10, &val);
307 if (err < 0)
308 return err;
309
310 mutex_lock(&data->update_lock);
311 data->fan_min[nr] = rpm_to_reg(val);
312 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
313 mutex_unlock(&data->update_lock);
314 return count;
315 }
316
317 static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
318 const char *buf, size_t count)
319 {
320 int nr = to_sensor_dev_attr(attr)->index;
321 struct i2c_client *client = to_i2c_client(dev);
322 struct f75375_data *data = i2c_get_clientdata(client);
323 unsigned long val;
324 int err;
325
326 err = kstrtoul(buf, 10, &val);
327 if (err < 0)
328 return err;
329
330 if (auto_mode_enabled(data->pwm_enable[nr]))
331 return -EINVAL;
332 if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr]))
333 return -EINVAL;
334
335 mutex_lock(&data->update_lock);
336 data->fan_target[nr] = rpm_to_reg(val);
337 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
338 mutex_unlock(&data->update_lock);
339 return count;
340 }
341
342 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
343 const char *buf, size_t count)
344 {
345 int nr = to_sensor_dev_attr(attr)->index;
346 struct i2c_client *client = to_i2c_client(dev);
347 struct f75375_data *data = i2c_get_clientdata(client);
348 unsigned long val;
349 int err;
350
351 err = kstrtoul(buf, 10, &val);
352 if (err < 0)
353 return err;
354
355 if (auto_mode_enabled(data->pwm_enable[nr]) ||
356 !duty_mode_enabled(data->pwm_enable[nr]))
357 return -EINVAL;
358
359 mutex_lock(&data->update_lock);
360 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
361 f75375_write_pwm(client, nr);
362 mutex_unlock(&data->update_lock);
363 return count;
364 }
365
366 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
367 *attr, char *buf)
368 {
369 int nr = to_sensor_dev_attr(attr)->index;
370 struct f75375_data *data = f75375_update_device(dev);
371 return sprintf(buf, "%d\n", data->pwm_enable[nr]);
372 }
373
374 static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
375 {
376 struct f75375_data *data = i2c_get_clientdata(client);
377 u8 fanmode;
378
379 if (val < 0 || val > 4)
380 return -EINVAL;
381
382 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
383 if (data->kind == f75387) {
384 /* For now, deny dangerous toggling of duty mode */
385 if (duty_mode_enabled(data->pwm_enable[nr]) !=
386 duty_mode_enabled(val))
387 return -EOPNOTSUPP;
388 /* clear each fanX_mode bit before setting them properly */
389 fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr));
390 fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr));
391 switch (val) {
392 case 0: /* full speed */
393 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
394 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
395 data->pwm[nr] = 255;
396 break;
397 case 1: /* PWM */
398 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
399 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
400 break;
401 case 2: /* Automatic, speed mode */
402 break;
403 case 3: /* fan speed */
404 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
405 break;
406 case 4: /* Automatic, pwm */
407 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
408 break;
409 }
410 } else {
411 /* clear each fanX_mode bit before setting them properly */
412 fanmode &= ~(3 << FAN_CTRL_MODE(nr));
413 switch (val) {
414 case 0: /* full speed */
415 fanmode |= (3 << FAN_CTRL_MODE(nr));
416 data->pwm[nr] = 255;
417 break;
418 case 1: /* PWM */
419 fanmode |= (3 << FAN_CTRL_MODE(nr));
420 break;
421 case 2: /* AUTOMATIC*/
422 fanmode |= (1 << FAN_CTRL_MODE(nr));
423 break;
424 case 3: /* fan speed */
425 break;
426 case 4: /* Automatic pwm */
427 return -EINVAL;
428 }
429 }
430
431 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
432 data->pwm_enable[nr] = val;
433 if (val == 0)
434 f75375_write_pwm(client, nr);
435 return 0;
436 }
437
438 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
439 const char *buf, size_t count)
440 {
441 int nr = to_sensor_dev_attr(attr)->index;
442 struct i2c_client *client = to_i2c_client(dev);
443 struct f75375_data *data = i2c_get_clientdata(client);
444 unsigned long val;
445 int err;
446
447 err = kstrtoul(buf, 10, &val);
448 if (err < 0)
449 return err;
450
451 mutex_lock(&data->update_lock);
452 err = set_pwm_enable_direct(client, nr, val);
453 mutex_unlock(&data->update_lock);
454 return err ? err : count;
455 }
456
457 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
458 const char *buf, size_t count)
459 {
460 int nr = to_sensor_dev_attr(attr)->index;
461 struct i2c_client *client = to_i2c_client(dev);
462 struct f75375_data *data = i2c_get_clientdata(client);
463 unsigned long val;
464 int err;
465 u8 conf;
466 char reg, ctrl;
467
468 err = kstrtoul(buf, 10, &val);
469 if (err < 0)
470 return err;
471
472 if (!(val == 0 || val == 1))
473 return -EINVAL;
474
475 /* F75373 does not support DC (linear voltage) fan control mode */
476 if (data->kind == f75373 && val == 0)
477 return -EINVAL;
478
479 /* take care for different registers */
480 if (data->kind == f75387) {
481 reg = F75375_REG_FAN_TIMER;
482 ctrl = F75387_FAN_CTRL_LINEAR(nr);
483 } else {
484 reg = F75375_REG_CONFIG1;
485 ctrl = F75375_FAN_CTRL_LINEAR(nr);
486 }
487
488 mutex_lock(&data->update_lock);
489 conf = f75375_read8(client, reg);
490 conf &= ~(1 << ctrl);
491
492 if (val == 0)
493 conf |= (1 << ctrl);
494
495 f75375_write8(client, reg, conf);
496 data->pwm_mode[nr] = val;
497 mutex_unlock(&data->update_lock);
498 return count;
499 }
500
501 static ssize_t show_pwm(struct device *dev, struct device_attribute
502 *attr, char *buf)
503 {
504 int nr = to_sensor_dev_attr(attr)->index;
505 struct f75375_data *data = f75375_update_device(dev);
506 return sprintf(buf, "%d\n", data->pwm[nr]);
507 }
508
509 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
510 *attr, char *buf)
511 {
512 int nr = to_sensor_dev_attr(attr)->index;
513 struct f75375_data *data = f75375_update_device(dev);
514 return sprintf(buf, "%d\n", data->pwm_mode[nr]);
515 }
516
517 #define VOLT_FROM_REG(val) ((val) * 8)
518 #define VOLT_TO_REG(val) ((val) / 8)
519
520 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
521 char *buf)
522 {
523 int nr = to_sensor_dev_attr(attr)->index;
524 struct f75375_data *data = f75375_update_device(dev);
525 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
526 }
527
528 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
529 char *buf)
530 {
531 int nr = to_sensor_dev_attr(attr)->index;
532 struct f75375_data *data = f75375_update_device(dev);
533 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
534 }
535
536 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
537 char *buf)
538 {
539 int nr = to_sensor_dev_attr(attr)->index;
540 struct f75375_data *data = f75375_update_device(dev);
541 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
542 }
543
544 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
545 const char *buf, size_t count)
546 {
547 int nr = to_sensor_dev_attr(attr)->index;
548 struct i2c_client *client = to_i2c_client(dev);
549 struct f75375_data *data = i2c_get_clientdata(client);
550 unsigned long val;
551 int err;
552
553 err = kstrtoul(buf, 10, &val);
554 if (err < 0)
555 return err;
556
557 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
558 mutex_lock(&data->update_lock);
559 data->in_max[nr] = val;
560 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
561 mutex_unlock(&data->update_lock);
562 return count;
563 }
564
565 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
566 const char *buf, size_t count)
567 {
568 int nr = to_sensor_dev_attr(attr)->index;
569 struct i2c_client *client = to_i2c_client(dev);
570 struct f75375_data *data = i2c_get_clientdata(client);
571 unsigned long val;
572 int err;
573
574 err = kstrtoul(buf, 10, &val);
575 if (err < 0)
576 return err;
577
578 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff);
579 mutex_lock(&data->update_lock);
580 data->in_min[nr] = val;
581 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
582 mutex_unlock(&data->update_lock);
583 return count;
584 }
585 #define TEMP_FROM_REG(val) ((val) * 1000)
586 #define TEMP_TO_REG(val) ((val) / 1000)
587 #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
588
589 static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
590 char *buf)
591 {
592 int nr = to_sensor_dev_attr(attr)->index;
593 struct f75375_data *data = f75375_update_device(dev);
594 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
595 }
596
597 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
598 char *buf)
599 {
600 int nr = to_sensor_dev_attr(attr)->index;
601 struct f75375_data *data = f75375_update_device(dev);
602 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
603 }
604
605 static ssize_t show_temp_max_hyst(struct device *dev,
606 struct device_attribute *attr, char *buf)
607 {
608 int nr = to_sensor_dev_attr(attr)->index;
609 struct f75375_data *data = f75375_update_device(dev);
610 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
611 }
612
613 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
614 const char *buf, size_t count)
615 {
616 int nr = to_sensor_dev_attr(attr)->index;
617 struct i2c_client *client = to_i2c_client(dev);
618 struct f75375_data *data = i2c_get_clientdata(client);
619 unsigned long val;
620 int err;
621
622 err = kstrtoul(buf, 10, &val);
623 if (err < 0)
624 return err;
625
626 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
627 mutex_lock(&data->update_lock);
628 data->temp_high[nr] = val;
629 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
630 mutex_unlock(&data->update_lock);
631 return count;
632 }
633
634 static ssize_t set_temp_max_hyst(struct device *dev,
635 struct device_attribute *attr, const char *buf, size_t count)
636 {
637 int nr = to_sensor_dev_attr(attr)->index;
638 struct i2c_client *client = to_i2c_client(dev);
639 struct f75375_data *data = i2c_get_clientdata(client);
640 unsigned long val;
641 int err;
642
643 err = kstrtoul(buf, 10, &val);
644 if (err < 0)
645 return err;
646
647 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127);
648 mutex_lock(&data->update_lock);
649 data->temp_max_hyst[nr] = val;
650 f75375_write8(client, F75375_REG_TEMP_HYST(nr),
651 data->temp_max_hyst[nr]);
652 mutex_unlock(&data->update_lock);
653 return count;
654 }
655
656 #define show_fan(thing) \
657 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
658 char *buf)\
659 {\
660 int nr = to_sensor_dev_attr(attr)->index;\
661 struct f75375_data *data = f75375_update_device(dev); \
662 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
663 }
664
665 show_fan(fan);
666 show_fan(fan_min);
667 show_fan(fan_max);
668 show_fan(fan_target);
669
670 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
671 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
672 show_in_max, set_in_max, 0);
673 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
674 show_in_min, set_in_min, 0);
675 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
676 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
677 show_in_max, set_in_max, 1);
678 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
679 show_in_min, set_in_min, 1);
680 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
681 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
682 show_in_max, set_in_max, 2);
683 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
684 show_in_min, set_in_min, 2);
685 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
686 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
687 show_in_max, set_in_max, 3);
688 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
689 show_in_min, set_in_min, 3);
690 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
691 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
692 show_temp_max_hyst, set_temp_max_hyst, 0);
693 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
694 show_temp_max, set_temp_max, 0);
695 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
696 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
697 show_temp_max_hyst, set_temp_max_hyst, 1);
698 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
699 show_temp_max, set_temp_max, 1);
700 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
701 static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
702 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
703 show_fan_min, set_fan_min, 0);
704 static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
705 show_fan_target, set_fan_target, 0);
706 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
707 static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
708 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
709 show_fan_min, set_fan_min, 1);
710 static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
711 show_fan_target, set_fan_target, 1);
712 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
713 show_pwm, set_pwm, 0);
714 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
715 show_pwm_enable, set_pwm_enable, 0);
716 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
717 show_pwm_mode, set_pwm_mode, 0);
718 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
719 show_pwm, set_pwm, 1);
720 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
721 show_pwm_enable, set_pwm_enable, 1);
722 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
723 show_pwm_mode, set_pwm_mode, 1);
724
725 static struct attribute *f75375_attributes[] = {
726 &sensor_dev_attr_temp1_input.dev_attr.attr,
727 &sensor_dev_attr_temp1_max.dev_attr.attr,
728 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
729 &sensor_dev_attr_temp2_input.dev_attr.attr,
730 &sensor_dev_attr_temp2_max.dev_attr.attr,
731 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
732 &sensor_dev_attr_fan1_input.dev_attr.attr,
733 &sensor_dev_attr_fan1_max.dev_attr.attr,
734 &sensor_dev_attr_fan1_min.dev_attr.attr,
735 &sensor_dev_attr_fan1_target.dev_attr.attr,
736 &sensor_dev_attr_fan2_input.dev_attr.attr,
737 &sensor_dev_attr_fan2_max.dev_attr.attr,
738 &sensor_dev_attr_fan2_min.dev_attr.attr,
739 &sensor_dev_attr_fan2_target.dev_attr.attr,
740 &sensor_dev_attr_pwm1.dev_attr.attr,
741 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
742 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
743 &sensor_dev_attr_pwm2.dev_attr.attr,
744 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
745 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
746 &sensor_dev_attr_in0_input.dev_attr.attr,
747 &sensor_dev_attr_in0_max.dev_attr.attr,
748 &sensor_dev_attr_in0_min.dev_attr.attr,
749 &sensor_dev_attr_in1_input.dev_attr.attr,
750 &sensor_dev_attr_in1_max.dev_attr.attr,
751 &sensor_dev_attr_in1_min.dev_attr.attr,
752 &sensor_dev_attr_in2_input.dev_attr.attr,
753 &sensor_dev_attr_in2_max.dev_attr.attr,
754 &sensor_dev_attr_in2_min.dev_attr.attr,
755 &sensor_dev_attr_in3_input.dev_attr.attr,
756 &sensor_dev_attr_in3_max.dev_attr.attr,
757 &sensor_dev_attr_in3_min.dev_attr.attr,
758 NULL
759 };
760
761 static const struct attribute_group f75375_group = {
762 .attrs = f75375_attributes,
763 };
764
765 static void f75375_init(struct i2c_client *client, struct f75375_data *data,
766 struct f75375s_platform_data *f75375s_pdata)
767 {
768 int nr;
769
770 if (!f75375s_pdata) {
771 u8 conf, mode;
772 int nr;
773
774 conf = f75375_read8(client, F75375_REG_CONFIG1);
775 mode = f75375_read8(client, F75375_REG_FAN_TIMER);
776 for (nr = 0; nr < 2; nr++) {
777 if (data->kind == f75387) {
778 bool manu, duty;
779
780 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
781 data->pwm_mode[nr] = 1;
782
783 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1);
784 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1);
785 if (!manu && duty)
786 /* auto, pwm */
787 data->pwm_enable[nr] = 4;
788 else if (manu && !duty)
789 /* manual, speed */
790 data->pwm_enable[nr] = 3;
791 else if (!manu && !duty)
792 /* automatic, speed */
793 data->pwm_enable[nr] = 2;
794 else
795 /* manual, pwm */
796 data->pwm_enable[nr] = 1;
797 } else {
798 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr))))
799 data->pwm_mode[nr] = 1;
800
801 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) {
802 case 0: /* speed */
803 data->pwm_enable[nr] = 3;
804 break;
805 case 1: /* automatic */
806 data->pwm_enable[nr] = 2;
807 break;
808 default: /* manual */
809 data->pwm_enable[nr] = 1;
810 break;
811 }
812 }
813 }
814 return;
815 }
816
817 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
818 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
819 for (nr = 0; nr < 2; nr++) {
820 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
821 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
822 continue;
823 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255);
824 f75375_write_pwm(client, nr);
825 }
826
827 }
828
829 static int f75375_probe(struct i2c_client *client,
830 const struct i2c_device_id *id)
831 {
832 struct f75375_data *data;
833 struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data;
834 int err;
835
836 if (!i2c_check_functionality(client->adapter,
837 I2C_FUNC_SMBUS_BYTE_DATA))
838 return -EIO;
839 data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL);
840 if (!data)
841 return -ENOMEM;
842
843 i2c_set_clientdata(client, data);
844 mutex_init(&data->update_lock);
845 data->kind = id->driver_data;
846
847 err = sysfs_create_group(&client->dev.kobj, &f75375_group);
848 if (err)
849 goto exit_free;
850
851 if (data->kind != f75373) {
852 err = sysfs_chmod_file(&client->dev.kobj,
853 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
854 S_IRUGO | S_IWUSR);
855 if (err)
856 goto exit_remove;
857 err = sysfs_chmod_file(&client->dev.kobj,
858 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
859 S_IRUGO | S_IWUSR);
860 if (err)
861 goto exit_remove;
862 }
863
864 data->hwmon_dev = hwmon_device_register(&client->dev);
865 if (IS_ERR(data->hwmon_dev)) {
866 err = PTR_ERR(data->hwmon_dev);
867 goto exit_remove;
868 }
869
870 f75375_init(client, data, f75375s_pdata);
871
872 return 0;
873
874 exit_remove:
875 sysfs_remove_group(&client->dev.kobj, &f75375_group);
876 exit_free:
877 kfree(data);
878 return err;
879 }
880
881 static int f75375_remove(struct i2c_client *client)
882 {
883 struct f75375_data *data = i2c_get_clientdata(client);
884 hwmon_device_unregister(data->hwmon_dev);
885 sysfs_remove_group(&client->dev.kobj, &f75375_group);
886 kfree(data);
887 return 0;
888 }
889
890 /* Return 0 if detection is successful, -ENODEV otherwise */
891 static int f75375_detect(struct i2c_client *client,
892 struct i2c_board_info *info)
893 {
894 struct i2c_adapter *adapter = client->adapter;
895 u16 vendid, chipid;
896 u8 version;
897 const char *name;
898
899 vendid = f75375_read16(client, F75375_REG_VENDOR);
900 chipid = f75375_read16(client, F75375_CHIP_ID);
901 if (vendid != 0x1934)
902 return -ENODEV;
903
904 if (chipid == 0x0306)
905 name = "f75375";
906 else if (chipid == 0x0204)
907 name = "f75373";
908 else if (chipid == 0x0410)
909 name = "f75387";
910 else
911 return -ENODEV;
912
913 version = f75375_read8(client, F75375_REG_VERSION);
914 dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
915 strlcpy(info->type, name, I2C_NAME_SIZE);
916
917 return 0;
918 }
919
920 static int __init sensors_f75375_init(void)
921 {
922 return i2c_add_driver(&f75375_driver);
923 }
924
925 static void __exit sensors_f75375_exit(void)
926 {
927 i2c_del_driver(&f75375_driver);
928 }
929
930 MODULE_AUTHOR("Riku Voipio");
931 MODULE_LICENSE("GPL");
932 MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");
933
934 module_init(sensors_f75375_init);
935 module_exit(sensors_f75375_exit);
Linux with added FPC-III support