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Merge tag 'input-for-v6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-block.git] / drivers / hwmon / f75375s.c
CommitLineData
74ba9207 1// SPDX-License-Identifier: GPL-2.0-or-later
84f1e442 2/*
f58c44e6
BG		 3 * f75375s.c - driver for the Fintek F75375/SP, F75373 and
4 * F75387SG/RG hardware monitoring features
b26e0ed4 5 * Copyright (C) 2006-2007 Riku Voipio
84f1e442
RV		 6 *
7 * Datasheets available at:
8 *
9 * f75375:
4fd826ef 10 * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf
84f1e442
RV		 11 *
12 * f75373:
631dd1a8 13 * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf
84f1e442 14 *
f58c44e6
BG		 15 * f75387:
16 * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf
84f1e442
RV		 17 */
18
19#include <linux/module.h>
20#include <linux/jiffies.h>
21#include <linux/hwmon.h>
22#include <linux/hwmon-sysfs.h>
23#include <linux/i2c.h>
24#include <linux/err.h>
25#include <linux/mutex.h>
ff312d07 26#include <linux/f75375s.h>
5a0e3ad6 27#include <linux/slab.h>
84f1e442
RV		 28
29/* Addresses to scan */
25e9c86d 30static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
84f1e442 31
f58c44e6 32enum chips { f75373, f75375, f75387 };
84f1e442
RV		 33
34/* Fintek F75375 registers */
35#define F75375_REG_CONFIG0 0x0
36#define F75375_REG_CONFIG1 0x1
37#define F75375_REG_CONFIG2 0x2
38#define F75375_REG_CONFIG3 0x3
39#define F75375_REG_ADDR 0x4
40#define F75375_REG_INTR 0x31
41#define F75375_CHIP_ID 0x5A
42#define F75375_REG_VERSION 0x5C
43#define F75375_REG_VENDOR 0x5D
44#define F75375_REG_FAN_TIMER 0x60
45
46#define F75375_REG_VOLT(nr) (0x10 + (nr))
47#define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2)
48#define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2)
49
50#define F75375_REG_TEMP(nr) (0x14 + (nr))
f58c44e6 51#define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr))
84f1e442
RV		 52#define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2)
53#define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2)
54
55#define F75375_REG_FAN(nr) (0x16 + (nr) * 2)
56#define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2)
57#define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10)
58#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10)
59#define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10)
60
61#define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10)
62#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
63#define F75375_REG_FAN_B_SPEED(nr, step) \
64 ((0xA5 + (nr) * 0x10) + (step) * 2)
65
66#define F75375_REG_PWM1_RAISE_DUTY 0x69
67#define F75375_REG_PWM2_RAISE_DUTY 0x6A
68#define F75375_REG_PWM1_DROP_DUTY 0x6B
69#define F75375_REG_PWM2_DROP_DUTY 0x6C
70
f58c44e6
BG		 71#define F75375_FAN_CTRL_LINEAR(nr) (4 + nr)
72#define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4))
96f36408 73#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
f58c44e6
BG		 74#define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4))
75#define F75387_FAN_MANU_MODE(nr) ((nr) * 4)
84f1e442
RV		 76
77/*
78 * Data structures and manipulation thereof
79 */
80
81struct f75375_data {
82 unsigned short addr;
1beeffe4 83 struct device *hwmon_dev;
84f1e442
RV		 84
85 const char *name;
86 int kind;
87 struct mutex update_lock; /* protect register access */
952a11ca 88 bool valid;
84f1e442
RV		 89 unsigned long last_updated; /* In jiffies */
90 unsigned long last_limits; /* In jiffies */
91
92 /* Register values */
93 u8 in[4];
94 u8 in_max[4];
95 u8 in_min[4];
96 u16 fan[2];
97 u16 fan_min[2];
740f6be3
GR		 98 u16 fan_max[2];
99 u16 fan_target[2];
84f1e442
RV		 100 u8 fan_timer;
101 u8 pwm[2];
102 u8 pwm_mode[2];
103 u8 pwm_enable[2];
f58c44e6
BG		 104 /*
105 * f75387: For remote temperature reading, it uses signed 11-bit
106 * values with LSB = 0.125 degree Celsius, left-justified in 16-bit
107 * registers. For original 8-bit temp readings, the LSB just is 0.
108 */
109 s16 temp11[2];
84f1e442
RV		 110 s8 temp_high[2];
111 s8 temp_max_hyst[2];
112};
113
310ec792 114static int f75375_detect(struct i2c_client *client,
935ada8c 115 struct i2c_board_info *info);
f7bd7b54 116static int f75375_probe(struct i2c_client *client);
ed5c2f5f 117static void f75375_remove(struct i2c_client *client);
84f1e442 118
3760f736
JD		 119static const struct i2c_device_id f75375_id[] = {
120 { "f75373", f75373 },
121 { "f75375", f75375 },
f58c44e6 122 { "f75387", f75387 },
3760f736
JD		 123 { }
124};
125MODULE_DEVICE_TABLE(i2c, f75375_id);
126
620c142d 127static struct i2c_driver f75375_driver = {
935ada8c 128 .class = I2C_CLASS_HWMON,
620c142d
RV		 129 .driver = {
130 .name = "f75375",
131 },
1975d167 132 .probe = f75375_probe,
620c142d 133 .remove = f75375_remove,
3760f736 134 .id_table = f75375_id,
935ada8c 135 .detect = f75375_detect,
c3813d6a 136 .address_list = normal_i2c,
620c142d
RV		 137};
138
84f1e442
RV		 139static inline int f75375_read8(struct i2c_client *client, u8 reg)
140{
141 return i2c_smbus_read_byte_data(client, reg);
142}
143
144/* in most cases, should be called while holding update_lock */
145static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
146{
4fd826ef
GR		 147 return (i2c_smbus_read_byte_data(client, reg) << 8)
148 | i2c_smbus_read_byte_data(client, reg + 1);
84f1e442
RV		 149}
150
151static inline void f75375_write8(struct i2c_client *client, u8 reg,
152 u8 value)
153{
154 i2c_smbus_write_byte_data(client, reg, value);
155}
156
157static inline void f75375_write16(struct i2c_client *client, u8 reg,
158 u16 value)
159{
eb2f255b 160 int err = i2c_smbus_write_byte_data(client, reg, (value >> 8));
84f1e442
RV		 161 if (err)
162 return;
163 i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
164}
165
331255d3
NS		 166static void f75375_write_pwm(struct i2c_client *client, int nr)
167{
168 struct f75375_data *data = i2c_get_clientdata(client);
169 if (data->kind == f75387)
170 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->pwm[nr]);
171 else
172 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
173 data->pwm[nr]);
174}
175
84f1e442
RV		 176static struct f75375_data *f75375_update_device(struct device *dev)
177{
178 struct i2c_client *client = to_i2c_client(dev);
179 struct f75375_data *data = i2c_get_clientdata(client);
180 int nr;
181
182 mutex_lock(&data->update_lock);
183
184 /* Limit registers cache is refreshed after 60 seconds */
185 if (time_after(jiffies, data->last_limits + 60 * HZ)
186 || !data->valid) {
187 for (nr = 0; nr < 2; nr++) {
188 data->temp_high[nr] =
189 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
190 data->temp_max_hyst[nr] =
191 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
740f6be3 192 data->fan_max[nr] =
84f1e442
RV		 193 f75375_read16(client, F75375_REG_FAN_FULL(nr));
194 data->fan_min[nr] =
195 f75375_read16(client, F75375_REG_FAN_MIN(nr));
740f6be3 196 data->fan_target[nr] =
84f1e442 197 f75375_read16(client, F75375_REG_FAN_EXP(nr));
84f1e442
RV		 198 }
199 for (nr = 0; nr < 4; nr++) {
200 data->in_max[nr] =
201 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
202 data->in_min[nr] =
203 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
204 }
205 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
206 data->last_limits = jiffies;
207 }
208
209 /* Measurement registers cache is refreshed after 2 second */
210 if (time_after(jiffies, data->last_updated + 2 * HZ)
211 || !data->valid) {
212 for (nr = 0; nr < 2; nr++) {
a1c1baf0
NS		 213 data->pwm[nr] = f75375_read8(client,
214 F75375_REG_FAN_PWM_DUTY(nr));
f58c44e6
BG		 215 /* assign MSB, therefore shift it by 8 bits */
216 data->temp11[nr] =
217 f75375_read8(client, F75375_REG_TEMP(nr)) << 8;
218 if (data->kind == f75387)
219 /* merge F75387's temperature LSB (11-bit) */
220 data->temp11[nr] |=
221 f75375_read8(client,
222 F75387_REG_TEMP11_LSB(nr));
84f1e442
RV		 223 data->fan[nr] =
224 f75375_read16(client, F75375_REG_FAN(nr));
225 }
226 for (nr = 0; nr < 4; nr++)
227 data->in[nr] =
228 f75375_read8(client, F75375_REG_VOLT(nr));
229
230 data->last_updated = jiffies;
952a11ca 231 data->valid = true;
84f1e442
RV		 232 }
233
234 mutex_unlock(&data->update_lock);
235 return data;
236}
237
238static inline u16 rpm_from_reg(u16 reg)
239{
240 if (reg == 0 || reg == 0xffff)
241 return 0;
4fd826ef 242 return 1500000 / reg;
84f1e442
RV		 243}
244
245static inline u16 rpm_to_reg(int rpm)
246{
247 if (rpm < 367 || rpm > 0xffff)
248 return 0xffff;
4fd826ef 249 return 1500000 / rpm;
84f1e442
RV		 250}
251
b17d6561
NS		 252static bool duty_mode_enabled(u8 pwm_enable)
253{
254 switch (pwm_enable) {
255 case 0: /* Manual, duty mode (full speed) */
256 case 1: /* Manual, duty mode */
257 case 4: /* Auto, duty mode */
258 return true;
259 case 2: /* Auto, speed mode */
260 case 3: /* Manual, speed mode */
261 return false;
262 default:
39b103b4 263 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
6394011d 264 return true;
b17d6561
NS		 265 }
266}
267
15d1ad0c
NS		 268static bool auto_mode_enabled(u8 pwm_enable)
269{
270 switch (pwm_enable) {
271 case 0: /* Manual, duty mode (full speed) */
272 case 1: /* Manual, duty mode */
273 case 3: /* Manual, speed mode */
274 return false;
275 case 2: /* Auto, speed mode */
276 case 4: /* Auto, duty mode */
277 return true;
278 default:
39b103b4 279 WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
6394011d 280 return false;
15d1ad0c
NS		 281 }
282}
283
84f1e442
RV		 284static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
285 const char *buf, size_t count)
286{
287 int nr = to_sensor_dev_attr(attr)->index;
288 struct i2c_client *client = to_i2c_client(dev);
289 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 290 unsigned long val;
291 int err;
292
293 err = kstrtoul(buf, 10, &val);
294 if (err < 0)
295 return err;
84f1e442
RV		 296
297 mutex_lock(&data->update_lock);
298 data->fan_min[nr] = rpm_to_reg(val);
299 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
300 mutex_unlock(&data->update_lock);
301 return count;
302}
303
740f6be3 304static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
84f1e442
RV		 305 const char *buf, size_t count)
306{
307 int nr = to_sensor_dev_attr(attr)->index;
308 struct i2c_client *client = to_i2c_client(dev);
309 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 310 unsigned long val;
311 int err;
312
313 err = kstrtoul(buf, 10, &val);
314 if (err < 0)
315 return err;
84f1e442 316
15d1ad0c
NS		 317 if (auto_mode_enabled(data->pwm_enable[nr]))
318 return -EINVAL;
319 if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr]))
320 return -EINVAL;
321
84f1e442 322 mutex_lock(&data->update_lock);
740f6be3
GR		 323 data->fan_target[nr] = rpm_to_reg(val);
324 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
84f1e442
RV		 325 mutex_unlock(&data->update_lock);
326 return count;
327}
328
329static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
330 const char *buf, size_t count)
331{
332 int nr = to_sensor_dev_attr(attr)->index;
333 struct i2c_client *client = to_i2c_client(dev);
334 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 335 unsigned long val;
336 int err;
337
338 err = kstrtoul(buf, 10, &val);
339 if (err < 0)
340 return err;
84f1e442 341
15d1ad0c
NS		 342 if (auto_mode_enabled(data->pwm_enable[nr]) ||
343 !duty_mode_enabled(data->pwm_enable[nr]))
344 return -EINVAL;
345
84f1e442 346 mutex_lock(&data->update_lock);
2a844c14 347 data->pwm[nr] = clamp_val(val, 0, 255);
331255d3 348 f75375_write_pwm(client, nr);
84f1e442
RV		 349 mutex_unlock(&data->update_lock);
350 return count;
351}
352
353static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
354 *attr, char *buf)
355{
356 int nr = to_sensor_dev_attr(attr)->index;
357 struct f75375_data *data = f75375_update_device(dev);
358 return sprintf(buf, "%d\n", data->pwm_enable[nr]);
359}
360
ff312d07 361static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
84f1e442 362{
84f1e442 363 struct f75375_data *data = i2c_get_clientdata(client);
84f1e442
RV		 364 u8 fanmode;
365
b17d6561 366 if (val < 0 || val > 4)
84f1e442
RV		 367 return -EINVAL;
368
84f1e442 369 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
f58c44e6 370 if (data->kind == f75387) {
b17d6561
NS		 371 /* For now, deny dangerous toggling of duty mode */
372 if (duty_mode_enabled(data->pwm_enable[nr]) !=
373 duty_mode_enabled(val))
374 return -EOPNOTSUPP;
f58c44e6
BG		 375 /* clear each fanX_mode bit before setting them properly */
376 fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr));
377 fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr));
378 switch (val) {
379 case 0: /* full speed */
380 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
381 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
382 data->pwm[nr] = 255;
f58c44e6
BG		 383 break;
384 case 1: /* PWM */
385 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
386 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
387 break;
b17d6561 388 case 2: /* Automatic, speed mode */
f58c44e6
BG		 389 break;
390 case 3: /* fan speed */
391 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
392 break;
b17d6561
NS		 393 case 4: /* Automatic, pwm */
394 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
395 break;
f58c44e6
BG		 396 }
397 } else {
398 /* clear each fanX_mode bit before setting them properly */
399 fanmode &= ~(3 << FAN_CTRL_MODE(nr));
400 switch (val) {
401 case 0: /* full speed */
402 fanmode |= (3 << FAN_CTRL_MODE(nr));
403 data->pwm[nr] = 255;
f58c44e6
BG		 404 break;
405 case 1: /* PWM */
406 fanmode |= (3 << FAN_CTRL_MODE(nr));
407 break;
408 case 2: /* AUTOMATIC*/
09e87e5c 409 fanmode |= (1 << FAN_CTRL_MODE(nr));
f58c44e6
BG		 410 break;
411 case 3: /* fan speed */
412 break;
b17d6561
NS		 413 case 4: /* Automatic pwm */
414 return -EINVAL;
f58c44e6 415 }
84f1e442 416 }
f58c44e6 417
84f1e442
RV		 418 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
419 data->pwm_enable[nr] = val;
c1c1a3d0 420 if (val == 0)
331255d3 421 f75375_write_pwm(client, nr);
ff312d07
RV		 422 return 0;
423}
424
425static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
426 const char *buf, size_t count)
427{
428 int nr = to_sensor_dev_attr(attr)->index;
429 struct i2c_client *client = to_i2c_client(dev);
430 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 431 unsigned long val;
432 int err;
433
434 err = kstrtoul(buf, 10, &val);
435 if (err < 0)
436 return err;
ff312d07
RV		 437
438 mutex_lock(&data->update_lock);
439 err = set_pwm_enable_direct(client, nr, val);
84f1e442 440 mutex_unlock(&data->update_lock);
ff312d07 441 return err ? err : count;
84f1e442
RV		 442}
443
444static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
445 const char *buf, size_t count)
446{
447 int nr = to_sensor_dev_attr(attr)->index;
448 struct i2c_client *client = to_i2c_client(dev);
449 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 450 unsigned long val;
451 int err;
452 u8 conf;
f58c44e6 453 char reg, ctrl;
4fd826ef
GR		 454
455 err = kstrtoul(buf, 10, &val);
456 if (err < 0)
457 return err;
84f1e442 458
76e83bef 459 if (!(val == 0 || val == 1))
84f1e442
RV		 460 return -EINVAL;
461
5cd3222a
GR		 462 /* F75373 does not support DC (linear voltage) fan control mode */
463 if (data->kind == f75373 && val == 0)
464 return -EINVAL;
465
f58c44e6
BG		 466 /* take care for different registers */
467 if (data->kind == f75387) {
468 reg = F75375_REG_FAN_TIMER;
469 ctrl = F75387_FAN_CTRL_LINEAR(nr);
470 } else {
471 reg = F75375_REG_CONFIG1;
472 ctrl = F75375_FAN_CTRL_LINEAR(nr);
473 }
474
84f1e442 475 mutex_lock(&data->update_lock);
f58c44e6
BG		 476 conf = f75375_read8(client, reg);
477 conf &= ~(1 << ctrl);
84f1e442
RV		 478
479 if (val == 0)
f58c44e6 480 conf |= (1 << ctrl);
84f1e442 481
f58c44e6 482 f75375_write8(client, reg, conf);
84f1e442
RV		 483 data->pwm_mode[nr] = val;
484 mutex_unlock(&data->update_lock);
485 return count;
486}
487
488static ssize_t show_pwm(struct device *dev, struct device_attribute
489 *attr, char *buf)
490{
491 int nr = to_sensor_dev_attr(attr)->index;
492 struct f75375_data *data = f75375_update_device(dev);
493 return sprintf(buf, "%d\n", data->pwm[nr]);
494}
495
496static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
497 *attr, char *buf)
498{
499 int nr = to_sensor_dev_attr(attr)->index;
500 struct f75375_data *data = f75375_update_device(dev);
501 return sprintf(buf, "%d\n", data->pwm_mode[nr]);
502}
503
504#define VOLT_FROM_REG(val) ((val) * 8)
505#define VOLT_TO_REG(val) ((val) / 8)
506
507static ssize_t show_in(struct device *dev, struct device_attribute *attr,
508 char *buf)
509{
510 int nr = to_sensor_dev_attr(attr)->index;
511 struct f75375_data *data = f75375_update_device(dev);
512 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
513}
514
515static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
516 char *buf)
517{
518 int nr = to_sensor_dev_attr(attr)->index;
519 struct f75375_data *data = f75375_update_device(dev);
520 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
521}
522
523static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
524 char *buf)
525{
526 int nr = to_sensor_dev_attr(attr)->index;
527 struct f75375_data *data = f75375_update_device(dev);
528 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
529}
530
531static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
532 const char *buf, size_t count)
533{
534 int nr = to_sensor_dev_attr(attr)->index;
535 struct i2c_client *client = to_i2c_client(dev);
536 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 537 unsigned long val;
538 int err;
539
540 err = kstrtoul(buf, 10, &val);
541 if (err < 0)
542 return err;
543
2a844c14 544 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
84f1e442
RV		 545 mutex_lock(&data->update_lock);
546 data->in_max[nr] = val;
547 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
548 mutex_unlock(&data->update_lock);
549 return count;
550}
551
552static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
553 const char *buf, size_t count)
554{
555 int nr = to_sensor_dev_attr(attr)->index;
556 struct i2c_client *client = to_i2c_client(dev);
557 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 558 unsigned long val;
559 int err;
560
561 err = kstrtoul(buf, 10, &val);
562 if (err < 0)
563 return err;
564
2a844c14 565 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
84f1e442
RV		 566 mutex_lock(&data->update_lock);
567 data->in_min[nr] = val;
568 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
569 mutex_unlock(&data->update_lock);
570 return count;
571}
572#define TEMP_FROM_REG(val) ((val) * 1000)
573#define TEMP_TO_REG(val) ((val) / 1000)
f58c44e6 574#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
84f1e442 575
f58c44e6 576static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
84f1e442
RV		 577 char *buf)
578{
579 int nr = to_sensor_dev_attr(attr)->index;
580 struct f75375_data *data = f75375_update_device(dev);
f58c44e6 581 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
84f1e442
RV		 582}
583
584static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
585 char *buf)
586{
587 int nr = to_sensor_dev_attr(attr)->index;
588 struct f75375_data *data = f75375_update_device(dev);
589 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
590}
591
592static ssize_t show_temp_max_hyst(struct device *dev,
593 struct device_attribute *attr, char *buf)
594{
595 int nr = to_sensor_dev_attr(attr)->index;
596 struct f75375_data *data = f75375_update_device(dev);
597 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
598}
599
600static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
601 const char *buf, size_t count)
602{
603 int nr = to_sensor_dev_attr(attr)->index;
604 struct i2c_client *client = to_i2c_client(dev);
605 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 606 unsigned long val;
607 int err;
608
609 err = kstrtoul(buf, 10, &val);
610 if (err < 0)
611 return err;
612
2a844c14 613 val = clamp_val(TEMP_TO_REG(val), 0, 127);
84f1e442
RV		 614 mutex_lock(&data->update_lock);
615 data->temp_high[nr] = val;
616 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
617 mutex_unlock(&data->update_lock);
618 return count;
619}
620
621static ssize_t set_temp_max_hyst(struct device *dev,
622 struct device_attribute *attr, const char *buf, size_t count)
623{
624 int nr = to_sensor_dev_attr(attr)->index;
625 struct i2c_client *client = to_i2c_client(dev);
626 struct f75375_data *data = i2c_get_clientdata(client);
4fd826ef
GR		 627 unsigned long val;
628 int err;
629
630 err = kstrtoul(buf, 10, &val);
631 if (err < 0)
632 return err;
633
2a844c14 634 val = clamp_val(TEMP_TO_REG(val), 0, 127);
84f1e442
RV		 635 mutex_lock(&data->update_lock);
636 data->temp_max_hyst[nr] = val;
637 f75375_write8(client, F75375_REG_TEMP_HYST(nr),
638 data->temp_max_hyst[nr]);
639 mutex_unlock(&data->update_lock);
640 return count;
641}
642
643#define show_fan(thing) \
644static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
645 char *buf)\
646{\
647 int nr = to_sensor_dev_attr(attr)->index;\
648 struct f75375_data *data = f75375_update_device(dev); \
649 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
650}
651
652show_fan(fan);
653show_fan(fan_min);
740f6be3
GR		 654show_fan(fan_max);
655show_fan(fan_target);
84f1e442
RV		 656
657static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
658static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
659 show_in_max, set_in_max, 0);
660static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
661 show_in_min, set_in_min, 0);
662static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
663static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
664 show_in_max, set_in_max, 1);
665static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
666 show_in_min, set_in_min, 1);
667static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
668static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
669 show_in_max, set_in_max, 2);
670static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
671 show_in_min, set_in_min, 2);
672static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
673static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
674 show_in_max, set_in_max, 3);
675static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
676 show_in_min, set_in_min, 3);
f58c44e6 677static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
84f1e442
RV		 678static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
679 show_temp_max_hyst, set_temp_max_hyst, 0);
680static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
681 show_temp_max, set_temp_max, 0);
f58c44e6 682static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
84f1e442
RV		 683static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
684 show_temp_max_hyst, set_temp_max_hyst, 1);
685static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
686 show_temp_max, set_temp_max, 1);
687static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
740f6be3 688static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
84f1e442
RV		 689static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
690 show_fan_min, set_fan_min, 0);
740f6be3
GR		 691static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
692 show_fan_target, set_fan_target, 0);
84f1e442 693static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
740f6be3 694static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
84f1e442
RV		 695static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
696 show_fan_min, set_fan_min, 1);
740f6be3
GR		 697static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
698 show_fan_target, set_fan_target, 1);
84f1e442
RV		 699static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
700 show_pwm, set_pwm, 0);
701static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
702 show_pwm_enable, set_pwm_enable, 0);
76e83bef 703static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
84f1e442
RV		 704 show_pwm_mode, set_pwm_mode, 0);
705static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
706 show_pwm, set_pwm, 1);
707static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
708 show_pwm_enable, set_pwm_enable, 1);
76e83bef 709static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
84f1e442
RV		 710 show_pwm_mode, set_pwm_mode, 1);
711
712static struct attribute *f75375_attributes[] = {
713 &sensor_dev_attr_temp1_input.dev_attr.attr,
714 &sensor_dev_attr_temp1_max.dev_attr.attr,
715 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
716 &sensor_dev_attr_temp2_input.dev_attr.attr,
717 &sensor_dev_attr_temp2_max.dev_attr.attr,
718 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
719 &sensor_dev_attr_fan1_input.dev_attr.attr,
740f6be3 720 &sensor_dev_attr_fan1_max.dev_attr.attr,
84f1e442 721 &sensor_dev_attr_fan1_min.dev_attr.attr,
740f6be3 722 &sensor_dev_attr_fan1_target.dev_attr.attr,
84f1e442 723 &sensor_dev_attr_fan2_input.dev_attr.attr,
740f6be3 724 &sensor_dev_attr_fan2_max.dev_attr.attr,
84f1e442 725 &sensor_dev_attr_fan2_min.dev_attr.attr,
740f6be3 726 &sensor_dev_attr_fan2_target.dev_attr.attr,
84f1e442
RV		 727 &sensor_dev_attr_pwm1.dev_attr.attr,
728 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
729 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
730 &sensor_dev_attr_pwm2.dev_attr.attr,
731 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
732 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
733 &sensor_dev_attr_in0_input.dev_attr.attr,
734 &sensor_dev_attr_in0_max.dev_attr.attr,
735 &sensor_dev_attr_in0_min.dev_attr.attr,
736 &sensor_dev_attr_in1_input.dev_attr.attr,
737 &sensor_dev_attr_in1_max.dev_attr.attr,
738 &sensor_dev_attr_in1_min.dev_attr.attr,
739 &sensor_dev_attr_in2_input.dev_attr.attr,
740 &sensor_dev_attr_in2_max.dev_attr.attr,
741 &sensor_dev_attr_in2_min.dev_attr.attr,
742 &sensor_dev_attr_in3_input.dev_attr.attr,
743 &sensor_dev_attr_in3_max.dev_attr.attr,
744 &sensor_dev_attr_in3_min.dev_attr.attr,
745 NULL
746};
747
748static const struct attribute_group f75375_group = {
749 .attrs = f75375_attributes,
750};
751
ff312d07
RV		 752static void f75375_init(struct i2c_client *client, struct f75375_data *data,
753 struct f75375s_platform_data *f75375s_pdata)
754{
755 int nr;
b1b561a2
GR		 756
757 if (!f75375s_pdata) {
758 u8 conf, mode;
759 int nr;
760
761 conf = f75375_read8(client, F75375_REG_CONFIG1);
762 mode = f75375_read8(client, F75375_REG_FAN_TIMER);
763 for (nr = 0; nr < 2; nr++) {
f58c44e6
BG		 764 if (data->kind == f75387) {
765 bool manu, duty;
766
a367a1e0 767 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
f58c44e6
BG		 768 data->pwm_mode[nr] = 1;
769
770 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1);
771 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1);
b17d6561
NS		 772 if (!manu && duty)
773 /* auto, pwm */
774 data->pwm_enable[nr] = 4;
775 else if (manu && !duty)
776 /* manual, speed */
f58c44e6 777 data->pwm_enable[nr] = 3;
b17d6561
NS		 778 else if (!manu && !duty)
779 /* automatic, speed */
f58c44e6
BG		 780 data->pwm_enable[nr] = 2;
781 else
b17d6561 782 /* manual, pwm */
f58c44e6
BG		 783 data->pwm_enable[nr] = 1;
784 } else {
785 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr))))
786 data->pwm_mode[nr] = 1;
787
788 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) {
789 case 0: /* speed */
790 data->pwm_enable[nr] = 3;
791 break;
792 case 1: /* automatic */
793 data->pwm_enable[nr] = 2;
794 break;
795 default: /* manual */
796 data->pwm_enable[nr] = 1;
797 break;
798 }
b1b561a2
GR		 799 }
800 }
801 return;
802 }
803
ff312d07
RV		 804 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
805 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
806 for (nr = 0; nr < 2; nr++) {
15d1ad0c
NS		 807 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
808 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
809 continue;
2a844c14 810 data->pwm[nr] = clamp_val(f75375s_pdata->pwm[nr], 0, 255);
331255d3 811 f75375_write_pwm(client, nr);
ff312d07
RV		 812 }
813
814}
815
f7bd7b54 816static int f75375_probe(struct i2c_client *client)
620c142d 817{
51b3e270 818 struct f75375_data *data;
a8b3a3a5
JH		 819 struct f75375s_platform_data *f75375s_pdata =
820 dev_get_platdata(&client->dev);
620c142d
RV		 821 int err;
822
823 if (!i2c_check_functionality(client->adapter,
824 I2C_FUNC_SMBUS_BYTE_DATA))
825 return -EIO;
05639bcb
GR		 826 data = devm_kzalloc(&client->dev, sizeof(struct f75375_data),
827 GFP_KERNEL);
4fd826ef 828 if (!data)
620c142d
RV		 829 return -ENOMEM;
830
831 i2c_set_clientdata(client, data);
620c142d 832 mutex_init(&data->update_lock);
f7bd7b54 833 data->kind = i2c_match_id(f75375_id, client)->driver_data;
620c142d 834
4fd826ef
GR		 835 err = sysfs_create_group(&client->dev.kobj, &f75375_group);
836 if (err)
05639bcb 837 return err;
620c142d 838
edeea102 839 if (data->kind != f75373) {
76e83bef
RV		 840 err = sysfs_chmod_file(&client->dev.kobj,
841 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
842 S_IRUGO | S_IWUSR);
843 if (err)
844 goto exit_remove;
845 err = sysfs_chmod_file(&client->dev.kobj,
846 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
847 S_IRUGO | S_IWUSR);
848 if (err)
849 goto exit_remove;
850 }
851
620c142d
RV		 852 data->hwmon_dev = hwmon_device_register(&client->dev);
853 if (IS_ERR(data->hwmon_dev)) {
854 err = PTR_ERR(data->hwmon_dev);
855 goto exit_remove;
856 }
857
b1b561a2 858 f75375_init(client, data, f75375s_pdata);
ff312d07 859
620c142d
RV		 860 return 0;
861
862exit_remove:
863 sysfs_remove_group(&client->dev.kobj, &f75375_group);
620c142d
RV		 864 return err;
865}
866
ed5c2f5f 867static void f75375_remove(struct i2c_client *client)
620c142d
RV		 868{
869 struct f75375_data *data = i2c_get_clientdata(client);
870 hwmon_device_unregister(data->hwmon_dev);
871 sysfs_remove_group(&client->dev.kobj, &f75375_group);
84f1e442
RV		 872}
873
935ada8c 874/* Return 0 if detection is successful, -ENODEV otherwise */
310ec792 875static int f75375_detect(struct i2c_client *client,
935ada8c 876 struct i2c_board_info *info)
84f1e442 877{
935ada8c 878 struct i2c_adapter *adapter = client->adapter;
52df6440
JD		 879 u16 vendid, chipid;
880 u8 version;
881 const char *name;
84f1e442 882
52df6440
JD		 883 vendid = f75375_read16(client, F75375_REG_VENDOR);
884 chipid = f75375_read16(client, F75375_CHIP_ID);
f58c44e6
BG		 885 if (vendid != 0x1934)
886 return -ENODEV;
887
888 if (chipid == 0x0306)
84f1e442 889 name = "f75375";
f58c44e6 890 else if (chipid == 0x0204)
84f1e442 891 name = "f75373";
f58c44e6
BG		 892 else if (chipid == 0x0410)
893 name = "f75387";
52df6440
JD		 894 else
895 return -ENODEV;
896
897 version = f75375_read8(client, F75375_REG_VERSION);
84f1e442 898 dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
f2f394db 899 strscpy(info->type, name, I2C_NAME_SIZE);
84f1e442 900
84f1e442 901 return 0;
84f1e442
RV		 902}
903
f0967eea 904module_i2c_driver(f75375_driver);
84f1e442 905
b26e0ed4 906MODULE_AUTHOR("Riku Voipio");
84f1e442 907MODULE_LICENSE("GPL");
f58c44e6 908MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");
Linux 6.x block layer and io_uring tree(s)