projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
[linux-2.6-block.git] / drivers / hwmon / f75375s.c
CommitLineData
84f1e442 1/*
f58c44e6
BG		 2 * f75375s.c - driver for the Fintek F75375/SP, F75373 and
3 * F75387SG/RG hardware monitoring features
b26e0ed4 4 * Copyright (C) 2006-2007 Riku Voipio
84f1e442
RV		 5 *
6 * Datasheets available at:
7 *
8 * f75375:
4fd826ef 9 * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf
84f1e442
RV		 10 *
11 * f75373:
631dd1a8 12 * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf
84f1e442 13 *
f58c44e6
BG		 14 * f75387:
15 * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf
16 *
84f1e442
RV		 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>
ff312d07 40#include <linux/f75375s.h>
5a0e3ad6 41#include <linux/slab.h>
84f1e442
RV		 42
43/* Addresses to scan */
25e9c86d 44static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
84f1e442 45
f58c44e6 46enum chips { f75373, f75375, f75387 };
84f1e442
RV		 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))
f58c44e6 65#define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr))
84f1e442
RV		 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
f58c44e6
BG		 85#define F75375_FAN_CTRL_LINEAR(nr) (4 + nr)
86#define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4))
96f36408 87#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
f58c44e6
BG		 88#define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4))
89#define F75387_FAN_MANU_MODE(nr) ((nr) * 4)
84f1e442
RV		 90
91/*
92 * Data structures and manipulation thereof
93 */
94
95struct f75375_data {
96 unsigned short addr;
1beeffe4 97 struct device *hwmon_dev;
84f1e442
RV		 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];
740f6be3
GR		 112 u16 fan_max[2];
113 u16 fan_target[2];
84f1e442
RV		 114 u8 fan_timer;
115 u8 pwm[2];
116 u8 pwm_mode[2];
117 u8 pwm_enable[2];
f58c44e6
BG		 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];
84f1e442
RV		 124 s8 temp_high[2];
125 s8 temp_max_hyst[2];
126};
127
310ec792 128static int f75375_detect(struct i2c_client *client,
935ada8c 129 struct i2c_board_info *info);
d2653e92
JD		 130static int f75375_probe(struct i2c_client *client,
131 const struct i2c_device_id *id);
620c142d 132static int f75375_remove(struct i2c_client *client);
84f1e442 133
3760f736
JD		 134static const struct i2c_device_id f75375_id[] = {
135 { "f75373", f75373 },
136 { "f75375", f75375 },
f58c44e6 137 { "f75387", f75387 },
3760f736
JD		 138 { }
139};
140MODULE_DEVICE_TABLE(i2c, f75375_id);
141
620c142d 142static struct i2c_driver f75375_driver = {
935ada8c 143 .class = I2C_CLASS_HWMON,
620c142d
RV		 144 .driver = {
145 .name = "f75375",
146 },
147 .probe = f75375_probe,
148 .remove = f75375_remove,
3760f736 149 .id_table = f75375_id,
935ada8c 150 .detect = f75375_detect,
c3813d6a 151 .address_list = normal_i2c,
620c142d
RV		 152};
153
84f1e442
RV		 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{
4fd826ef
GR		 162 return (i2c_smbus_read_byte_data(client, reg) << 8)
163 | i2c_smbus_read_byte_data(client, reg + 1);
84f1e442
RV		 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{
eb2f255b 175 int err = i2c_smbus_write_byte_data(client, reg, (value >> 8));
84f1e442
RV		 176 if (err)
177 return;
178 i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
179}
180
331255d3
NS		 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
84f1e442
RV		 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));
740f6be3 207 data->fan_max[nr] =
84f1e442
RV		 208 f75375_read16(client, F75375_REG_FAN_FULL(nr));
209 data->fan_min[nr] =
210 f75375_read16(client, F75375_REG_FAN_MIN(nr));
740f6be3 211 data->fan_target[nr] =
84f1e442 212 f75375_read16(client, F75375_REG_FAN_EXP(nr));
84f1e442
RV		 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++) {
a1c1baf0
NS		 228 data->pwm[nr] = f75375_read8(client,
229 F75375_REG_FAN_PWM_DUTY(nr));
f58c44e6
BG		 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));
84f1e442
RV		 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;
4fd826ef 257 return 1500000 / reg;
84f1e442
RV		 258}
259
260static inline u16 rpm_to_reg(int rpm)
261{
262 if (rpm < 367 || rpm > 0xffff)
263 return 0xffff;
4fd826ef 264 return 1500000 / rpm;
84f1e442
RV		 265}
266
b17d6561
NS		 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 BUG();
279 }
280}
281
15d1ad0c
NS		 282static 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
84f1e442
RV		 297static 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);
4fd826ef
GR		 303 unsigned long val;
304 int err;
305
306 err = kstrtoul(buf, 10, &val);
307 if (err < 0)
308 return err;
84f1e442
RV		 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
740f6be3 317static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
84f1e442
RV		 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);
4fd826ef
GR		 323 unsigned long val;
324 int err;
325
326 err = kstrtoul(buf, 10, &val);
327 if (err < 0)
328 return err;
84f1e442 329
15d1ad0c
NS		 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
84f1e442 335 mutex_lock(&data->update_lock);
740f6be3
GR		 336 data->fan_target[nr] = rpm_to_reg(val);
337 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
84f1e442
RV		 338 mutex_unlock(&data->update_lock);
339 return count;
340}
341
342static 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);
4fd826ef
GR		 348 unsigned long val;
349 int err;
350
351 err = kstrtoul(buf, 10, &val);
352 if (err < 0)
353 return err;
84f1e442 354
15d1ad0c
NS		 355 if (auto_mode_enabled(data->pwm_enable[nr]) ||
356 !duty_mode_enabled(data->pwm_enable[nr]))
357 return -EINVAL;
358
84f1e442
RV		 359 mutex_lock(&data->update_lock);
360 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255);
331255d3 361 f75375_write_pwm(client, nr);
84f1e442
RV		 362 mutex_unlock(&data->update_lock);
363 return count;
364}
365
366static 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
ff312d07 374static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
84f1e442 375{
84f1e442 376 struct f75375_data *data = i2c_get_clientdata(client);
84f1e442
RV		 377 u8 fanmode;
378
b17d6561 379 if (val < 0 || val > 4)
84f1e442
RV		 380 return -EINVAL;
381
84f1e442 382 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
f58c44e6 383 if (data->kind == f75387) {
b17d6561
NS		 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;
f58c44e6
BG		 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;
f58c44e6
BG		 396 break;
397 case 1: /* PWM */
398 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
399 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
400 break;
b17d6561 401 case 2: /* Automatic, speed mode */
f58c44e6
BG		 402 break;
403 case 3: /* fan speed */
404 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
405 break;
b17d6561
NS		 406 case 4: /* Automatic, pwm */
407 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
408 break;
f58c44e6
BG		 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;
f58c44e6
BG		 417 break;
418 case 1: /* PWM */
419 fanmode |= (3 << FAN_CTRL_MODE(nr));
420 break;
421 case 2: /* AUTOMATIC*/
09e87e5c 422 fanmode |= (1 << FAN_CTRL_MODE(nr));
f58c44e6
BG		 423 break;
424 case 3: /* fan speed */
425 break;
b17d6561
NS		 426 case 4: /* Automatic pwm */
427 return -EINVAL;
f58c44e6 428 }
84f1e442 429 }
f58c44e6 430
84f1e442
RV		 431 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
432 data->pwm_enable[nr] = val;
c1c1a3d0 433 if (val == 0)
331255d3 434 f75375_write_pwm(client, nr);
ff312d07
RV		 435 return 0;
436}
437
438static 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);
4fd826ef
GR		 444 unsigned long val;
445 int err;
446
447 err = kstrtoul(buf, 10, &val);
448 if (err < 0)
449 return err;
ff312d07
RV		 450
451 mutex_lock(&data->update_lock);
452 err = set_pwm_enable_direct(client, nr, val);
84f1e442 453 mutex_unlock(&data->update_lock);
ff312d07 454 return err ? err : count;
84f1e442
RV		 455}
456
457static 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);
4fd826ef
GR		 463 unsigned long val;
464 int err;
465 u8 conf;
f58c44e6 466 char reg, ctrl;
4fd826ef
GR		 467
468 err = kstrtoul(buf, 10, &val);
469 if (err < 0)
470 return err;
84f1e442 471
76e83bef 472 if (!(val == 0 || val == 1))
84f1e442
RV		 473 return -EINVAL;
474
5cd3222a
GR		 475 /* F75373 does not support DC (linear voltage) fan control mode */
476 if (data->kind == f75373 && val == 0)
477 return -EINVAL;
478
f58c44e6
BG		 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
84f1e442 488 mutex_lock(&data->update_lock);
f58c44e6
BG		 489 conf = f75375_read8(client, reg);
490 conf &= ~(1 << ctrl);
84f1e442
RV		 491
492 if (val == 0)
f58c44e6 493 conf |= (1 << ctrl);
84f1e442 494
f58c44e6 495 f75375_write8(client, reg, conf);
84f1e442
RV		 496 data->pwm_mode[nr] = val;
497 mutex_unlock(&data->update_lock);
498 return count;
499}
500
501static 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
509static 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
520static 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
528static 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
536static 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
544static 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);
4fd826ef
GR		 550 unsigned long val;
551 int err;
552
553 err = kstrtoul(buf, 10, &val);
554 if (err < 0)
555 return err;
556
84f1e442
RV		 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
565static 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);
4fd826ef
GR		 571 unsigned long val;
572 int err;
573
574 err = kstrtoul(buf, 10, &val);
575 if (err < 0)
576 return err;
577
84f1e442
RV		 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)
f58c44e6 587#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
84f1e442 588
f58c44e6 589static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
84f1e442
RV		 590 char *buf)
591{
592 int nr = to_sensor_dev_attr(attr)->index;
593 struct f75375_data *data = f75375_update_device(dev);
f58c44e6 594 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
84f1e442
RV		 595}
596
597static 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
605static 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
613static 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);
4fd826ef
GR		 619 unsigned long val;
620 int err;
621
622 err = kstrtoul(buf, 10, &val);
623 if (err < 0)
624 return err;
625
84f1e442
RV		 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
634static 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);
4fd826ef
GR		 640 unsigned long val;
641 int err;
642
643 err = kstrtoul(buf, 10, &val);
644 if (err < 0)
645 return err;
646
84f1e442
RV		 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) \
657static 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
665show_fan(fan);
666show_fan(fan_min);
740f6be3
GR		 667show_fan(fan_max);
668show_fan(fan_target);
84f1e442
RV		 669
670static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
671static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
672 show_in_max, set_in_max, 0);
673static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
674 show_in_min, set_in_min, 0);
675static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
676static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
677 show_in_max, set_in_max, 1);
678static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
679 show_in_min, set_in_min, 1);
680static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
681static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
682 show_in_max, set_in_max, 2);
683static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
684 show_in_min, set_in_min, 2);
685static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
686static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
687 show_in_max, set_in_max, 3);
688static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
689 show_in_min, set_in_min, 3);
f58c44e6 690static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
84f1e442
RV		 691static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
692 show_temp_max_hyst, set_temp_max_hyst, 0);
693static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
694 show_temp_max, set_temp_max, 0);
f58c44e6 695static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
84f1e442
RV		 696static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
697 show_temp_max_hyst, set_temp_max_hyst, 1);
698static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
699 show_temp_max, set_temp_max, 1);
700static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
740f6be3 701static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
84f1e442
RV		 702static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
703 show_fan_min, set_fan_min, 0);
740f6be3
GR		 704static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
705 show_fan_target, set_fan_target, 0);
84f1e442 706static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
740f6be3 707static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
84f1e442
RV		 708static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
709 show_fan_min, set_fan_min, 1);
740f6be3
GR		 710static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
711 show_fan_target, set_fan_target, 1);
84f1e442
RV		 712static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
713 show_pwm, set_pwm, 0);
714static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
715 show_pwm_enable, set_pwm_enable, 0);
76e83bef 716static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
84f1e442
RV		 717 show_pwm_mode, set_pwm_mode, 0);
718static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
719 show_pwm, set_pwm, 1);
720static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
721 show_pwm_enable, set_pwm_enable, 1);
76e83bef 722static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
84f1e442
RV		 723 show_pwm_mode, set_pwm_mode, 1);
724
725static 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,
740f6be3 733 &sensor_dev_attr_fan1_max.dev_attr.attr,
84f1e442 734 &sensor_dev_attr_fan1_min.dev_attr.attr,
740f6be3 735 &sensor_dev_attr_fan1_target.dev_attr.attr,
84f1e442 736 &sensor_dev_attr_fan2_input.dev_attr.attr,
740f6be3 737 &sensor_dev_attr_fan2_max.dev_attr.attr,
84f1e442 738 &sensor_dev_attr_fan2_min.dev_attr.attr,
740f6be3 739 &sensor_dev_attr_fan2_target.dev_attr.attr,
84f1e442
RV		 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
761static const struct attribute_group f75375_group = {
762 .attrs = f75375_attributes,
763};
764
ff312d07
RV		 765static void f75375_init(struct i2c_client *client, struct f75375_data *data,
766 struct f75375s_platform_data *f75375s_pdata)
767{
768 int nr;
b1b561a2
GR		 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++) {
f58c44e6
BG		 777 if (data->kind == f75387) {
778 bool manu, duty;
779
a367a1e0 780 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
f58c44e6
BG		 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);
b17d6561
NS		 785 if (!manu && duty)
786 /* auto, pwm */
787 data->pwm_enable[nr] = 4;
788 else if (manu && !duty)
789 /* manual, speed */
f58c44e6 790 data->pwm_enable[nr] = 3;
b17d6561
NS		 791 else if (!manu && !duty)
792 /* automatic, speed */
f58c44e6
BG		 793 data->pwm_enable[nr] = 2;
794 else
b17d6561 795 /* manual, pwm */
f58c44e6
BG		 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 }
b1b561a2
GR		 812 }
813 }
814 return;
815 }
816
ff312d07
RV		 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++) {
15d1ad0c
NS		 820 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
821 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
822 continue;
ff312d07 823 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255);
331255d3 824 f75375_write_pwm(client, nr);
ff312d07
RV		 825 }
826
827}
828
d2653e92
JD		 829static int f75375_probe(struct i2c_client *client,
830 const struct i2c_device_id *id)
620c142d 831{
51b3e270 832 struct f75375_data *data;
ff312d07 833 struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data;
620c142d
RV		 834 int err;
835
836 if (!i2c_check_functionality(client->adapter,
837 I2C_FUNC_SMBUS_BYTE_DATA))
838 return -EIO;
4fd826ef
GR		 839 data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL);
840 if (!data)
620c142d
RV		 841 return -ENOMEM;
842
843 i2c_set_clientdata(client, data);
620c142d 844 mutex_init(&data->update_lock);
3760f736 845 data->kind = id->driver_data;
620c142d 846
4fd826ef
GR		 847 err = sysfs_create_group(&client->dev.kobj, &f75375_group);
848 if (err)
620c142d
RV		 849 goto exit_free;
850
edeea102 851 if (data->kind != f75373) {
76e83bef
RV		 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
620c142d
RV		 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
b1b561a2 870 f75375_init(client, data, f75375s_pdata);
ff312d07 871
620c142d
RV		 872 return 0;
873
874exit_remove:
875 sysfs_remove_group(&client->dev.kobj, &f75375_group);
876exit_free:
877 kfree(data);
620c142d
RV		 878 return err;
879}
880
881static 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);
84f1e442
RV		 886 kfree(data);
887 return 0;
888}
889
935ada8c 890/* Return 0 if detection is successful, -ENODEV otherwise */
310ec792 891static int f75375_detect(struct i2c_client *client,
935ada8c 892 struct i2c_board_info *info)
84f1e442 893{
935ada8c 894 struct i2c_adapter *adapter = client->adapter;
52df6440
JD		 895 u16 vendid, chipid;
896 u8 version;
897 const char *name;
84f1e442 898
52df6440
JD		 899 vendid = f75375_read16(client, F75375_REG_VENDOR);
900 chipid = f75375_read16(client, F75375_CHIP_ID);
f58c44e6
BG		 901 if (vendid != 0x1934)
902 return -ENODEV;
903
904 if (chipid == 0x0306)
84f1e442 905 name = "f75375";
f58c44e6 906 else if (chipid == 0x0204)
84f1e442 907 name = "f75373";
f58c44e6
BG		 908 else if (chipid == 0x0410)
909 name = "f75387";
52df6440
JD		 910 else
911 return -ENODEV;
912
913 version = f75375_read8(client, F75375_REG_VERSION);
84f1e442 914 dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
935ada8c 915 strlcpy(info->type, name, I2C_NAME_SIZE);
84f1e442 916
84f1e442 917 return 0;
84f1e442
RV		 918}
919
f0967eea 920module_i2c_driver(f75375_driver);
84f1e442 921
b26e0ed4 922MODULE_AUTHOR("Riku Voipio");
84f1e442 923MODULE_LICENSE("GPL");
f58c44e6 924MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");
Linux 6.x block layer and io_uring tree(s)