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