projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[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:
39b103b4 278 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
6394011d 279 return true;
b17d6561
NS		 280 }
281}
282
15d1ad0c
NS		 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:
39b103b4 294 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
6394011d 295 return false;
15d1ad0c
NS		 296 }
297}
298
84f1e442
RV		 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);
4fd826ef
GR		 305 unsigned long val;
306 int err;
307
308 err = kstrtoul(buf, 10, &val);
309 if (err < 0)
310 return err;
84f1e442
RV		 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
740f6be3 319static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
84f1e442
RV		 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);
4fd826ef
GR		 325 unsigned long val;
326 int err;
327
328 err = kstrtoul(buf, 10, &val);
329 if (err < 0)
330 return err;
84f1e442 331
15d1ad0c
NS		 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
84f1e442 337 mutex_lock(&data->update_lock);
740f6be3
GR		 338 data->fan_target[nr] = rpm_to_reg(val);
339 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
84f1e442
RV		 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);
4fd826ef
GR		 350 unsigned long val;
351 int err;
352
353 err = kstrtoul(buf, 10, &val);
354 if (err < 0)
355 return err;
84f1e442 356
15d1ad0c
NS		 357 if (auto_mode_enabled(data->pwm_enable[nr]) ||
358 !duty_mode_enabled(data->pwm_enable[nr]))
359 return -EINVAL;
360
84f1e442 361 mutex_lock(&data->update_lock);
2a844c14 362 data->pwm[nr] = clamp_val(val, 0, 255);
331255d3 363 f75375_write_pwm(client, nr);
84f1e442
RV		 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
ff312d07 376static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
84f1e442 377{
84f1e442 378 struct f75375_data *data = i2c_get_clientdata(client);
84f1e442
RV		 379 u8 fanmode;
380
b17d6561 381 if (val < 0 || val > 4)
84f1e442
RV		 382 return -EINVAL;
383
84f1e442 384 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
f58c44e6 385 if (data->kind == f75387) {
b17d6561
NS		 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;
f58c44e6
BG		 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;
f58c44e6
BG		 398 break;
399 case 1: /* PWM */
400 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
401 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
402 break;
b17d6561 403 case 2: /* Automatic, speed mode */
f58c44e6
BG		 404 break;
405 case 3: /* fan speed */
406 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
407 break;
b17d6561
NS		 408 case 4: /* Automatic, pwm */
409 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
410 break;
f58c44e6
BG		 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;
f58c44e6
BG		 419 break;
420 case 1: /* PWM */
421 fanmode |= (3 << FAN_CTRL_MODE(nr));
422 break;
423 case 2: /* AUTOMATIC*/
09e87e5c 424 fanmode |= (1 << FAN_CTRL_MODE(nr));
f58c44e6
BG		 425 break;
426 case 3: /* fan speed */
427 break;
b17d6561
NS		 428 case 4: /* Automatic pwm */
429 return -EINVAL;
f58c44e6 430 }
84f1e442 431 }
f58c44e6 432
84f1e442
RV		 433 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
434 data->pwm_enable[nr] = val;
c1c1a3d0 435 if (val == 0)
331255d3 436 f75375_write_pwm(client, nr);
ff312d07
RV		 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);
4fd826ef
GR		 446 unsigned long val;
447 int err;
448
449 err = kstrtoul(buf, 10, &val);
450 if (err < 0)
451 return err;
ff312d07
RV		 452
453 mutex_lock(&data->update_lock);
454 err = set_pwm_enable_direct(client, nr, val);
84f1e442 455 mutex_unlock(&data->update_lock);
ff312d07 456 return err ? err : count;
84f1e442
RV		 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);
4fd826ef
GR		 465 unsigned long val;
466 int err;
467 u8 conf;
f58c44e6 468 char reg, ctrl;
4fd826ef
GR		 469
470 err = kstrtoul(buf, 10, &val);
471 if (err < 0)
472 return err;
84f1e442 473
76e83bef 474 if (!(val == 0 || val == 1))
84f1e442
RV		 475 return -EINVAL;
476
5cd3222a
GR		 477 /* F75373 does not support DC (linear voltage) fan control mode */
478 if (data->kind == f75373 && val == 0)
479 return -EINVAL;
480
f58c44e6
BG		 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
84f1e442 490 mutex_lock(&data->update_lock);
f58c44e6
BG		 491 conf = f75375_read8(client, reg);
492 conf &= ~(1 << ctrl);
84f1e442
RV		 493
494 if (val == 0)
f58c44e6 495 conf |= (1 << ctrl);
84f1e442 496
f58c44e6 497 f75375_write8(client, reg, conf);
84f1e442
RV		 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);
4fd826ef
GR		 552 unsigned long val;
553 int err;
554
555 err = kstrtoul(buf, 10, &val);
556 if (err < 0)
557 return err;
558
2a844c14 559 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
84f1e442
RV		 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);
4fd826ef
GR		 573 unsigned long val;
574 int err;
575
576 err = kstrtoul(buf, 10, &val);
577 if (err < 0)
578 return err;
579
2a844c14 580 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
84f1e442
RV		 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)
f58c44e6 589#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
84f1e442 590
f58c44e6 591static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
84f1e442
RV		 592 char *buf)
593{
594 int nr = to_sensor_dev_attr(attr)->index;
595 struct f75375_data *data = f75375_update_device(dev);
f58c44e6 596 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
84f1e442
RV		 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);
4fd826ef
GR		 621 unsigned long val;
622 int err;
623
624 err = kstrtoul(buf, 10, &val);
625 if (err < 0)
626 return err;
627
2a844c14 628 val = clamp_val(TEMP_TO_REG(val), 0, 127);
84f1e442
RV		 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);
4fd826ef
GR		 642 unsigned long val;
643 int err;
644
645 err = kstrtoul(buf, 10, &val);
646 if (err < 0)
647 return err;
648
2a844c14 649 val = clamp_val(TEMP_TO_REG(val), 0, 127);
84f1e442
RV		 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);
740f6be3
GR		 669show_fan(fan_max);
670show_fan(fan_target);
84f1e442
RV		 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);
f58c44e6 692static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
84f1e442
RV		 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);
f58c44e6 697static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
84f1e442
RV		 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);
740f6be3 703static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
84f1e442
RV		 704static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
705 show_fan_min, set_fan_min, 0);
740f6be3
GR		 706static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
707 show_fan_target, set_fan_target, 0);
84f1e442 708static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
740f6be3 709static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
84f1e442
RV		 710static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
711 show_fan_min, set_fan_min, 1);
740f6be3
GR		 712static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
713 show_fan_target, set_fan_target, 1);
84f1e442
RV		 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);
76e83bef 718static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
84f1e442
RV		 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);
76e83bef 724static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
84f1e442
RV		 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,
740f6be3 735 &sensor_dev_attr_fan1_max.dev_attr.attr,
84f1e442 736 &sensor_dev_attr_fan1_min.dev_attr.attr,
740f6be3 737 &sensor_dev_attr_fan1_target.dev_attr.attr,
84f1e442 738 &sensor_dev_attr_fan2_input.dev_attr.attr,
740f6be3 739 &sensor_dev_attr_fan2_max.dev_attr.attr,
84f1e442 740 &sensor_dev_attr_fan2_min.dev_attr.attr,
740f6be3 741 &sensor_dev_attr_fan2_target.dev_attr.attr,
84f1e442
RV		 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
ff312d07
RV		 767static void f75375_init(struct i2c_client *client, struct f75375_data *data,
768 struct f75375s_platform_data *f75375s_pdata)
769{
770 int nr;
b1b561a2
GR		 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++) {
f58c44e6
BG		 779 if (data->kind == f75387) {
780 bool manu, duty;
781
a367a1e0 782 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
f58c44e6
BG		 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);
b17d6561
NS		 787 if (!manu && duty)
788 /* auto, pwm */
789 data->pwm_enable[nr] = 4;
790 else if (manu && !duty)
791 /* manual, speed */
f58c44e6 792 data->pwm_enable[nr] = 3;
b17d6561
NS		 793 else if (!manu && !duty)
794 /* automatic, speed */
f58c44e6
BG		 795 data->pwm_enable[nr] = 2;
796 else
b17d6561 797 /* manual, pwm */
f58c44e6
BG		 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 }
b1b561a2
GR		 814 }
815 }
816 return;
817 }
818
ff312d07
RV		 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++) {
15d1ad0c
NS		 822 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
823 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
824 continue;
2a844c14 825 data->pwm[nr] = clamp_val(f75375s_pdata->pwm[nr], 0, 255);
331255d3 826 f75375_write_pwm(client, nr);
ff312d07
RV		 827 }
828
829}
830
d2653e92
JD		 831static int f75375_probe(struct i2c_client *client,
832 const struct i2c_device_id *id)
620c142d 833{
51b3e270 834 struct f75375_data *data;
a8b3a3a5
JH		 835 struct f75375s_platform_data *f75375s_pdata =
836 dev_get_platdata(&client->dev);
620c142d
RV		 837 int err;
838
839 if (!i2c_check_functionality(client->adapter,
840 I2C_FUNC_SMBUS_BYTE_DATA))
841 return -EIO;
05639bcb
GR		 842 data = devm_kzalloc(&client->dev, sizeof(struct f75375_data),
843 GFP_KERNEL);
4fd826ef 844 if (!data)
620c142d
RV		 845 return -ENOMEM;
846
847 i2c_set_clientdata(client, data);
620c142d 848 mutex_init(&data->update_lock);
3760f736 849 data->kind = id->driver_data;
620c142d 850
4fd826ef
GR		 851 err = sysfs_create_group(&client->dev.kobj, &f75375_group);
852 if (err)
05639bcb 853 return err;
620c142d 854
edeea102 855 if (data->kind != f75373) {
76e83bef
RV		 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
620c142d
RV		 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
b1b561a2 874 f75375_init(client, data, f75375s_pdata);
ff312d07 875
620c142d
RV		 876 return 0;
877
878exit_remove:
879 sysfs_remove_group(&client->dev.kobj, &f75375_group);
620c142d
RV		 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);
84f1e442
RV		 888 return 0;
889}
890
935ada8c 891/* Return 0 if detection is successful, -ENODEV otherwise */
310ec792 892static int f75375_detect(struct i2c_client *client,
935ada8c 893 struct i2c_board_info *info)
84f1e442 894{
935ada8c 895 struct i2c_adapter *adapter = client->adapter;
52df6440
JD		 896 u16 vendid, chipid;
897 u8 version;
898 const char *name;
84f1e442 899
52df6440
JD		 900 vendid = f75375_read16(client, F75375_REG_VENDOR);
901 chipid = f75375_read16(client, F75375_CHIP_ID);
f58c44e6
BG		 902 if (vendid != 0x1934)
903 return -ENODEV;
904
905 if (chipid == 0x0306)
84f1e442 906 name = "f75375";
f58c44e6 907 else if (chipid == 0x0204)
84f1e442 908 name = "f75373";
f58c44e6
BG		 909 else if (chipid == 0x0410)
910 name = "f75387";
52df6440
JD		 911 else
912 return -ENODEV;
913
914 version = f75375_read8(client, F75375_REG_VERSION);
84f1e442 915 dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
935ada8c 916 strlcpy(info->type, name, I2C_NAME_SIZE);
84f1e442 917
84f1e442 918 return 0;
84f1e442
RV		 919}
920
f0967eea 921module_i2c_driver(f75375_driver);
84f1e442 922
b26e0ed4 923MODULE_AUTHOR("Riku Voipio");
84f1e442 924MODULE_LICENSE("GPL");
f58c44e6 925MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");
Linux 6.x block layer and io_uring tree(s)