1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * nct7802 - Driver for Nuvoton NCT7802Y |
4 | * |
5 | * Copyright (C) 2014 Guenter Roeck <linux@roeck-us.net> |
6 | */ |
7 | |
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
9 | |
10 | #include <linux/err.h> |
11 | #include <linux/i2c.h> |
12 | #include <linux/init.h> |
13 | #include <linux/hwmon.h> |
14 | #include <linux/hwmon-sysfs.h> |
15 | #include <linux/jiffies.h> |
16 | #include <linux/module.h> |
17 | #include <linux/mutex.h> |
18 | #include <linux/regmap.h> |
19 | #include <linux/slab.h> |
20 | |
21 | #define DRVNAME "nct7802" |
22 | |
23 | static const u8 REG_VOLTAGE[5] = { 0x09, 0x0a, 0x0c, 0x0d, 0x0e }; |
24 | |
25 | static const u8 REG_VOLTAGE_LIMIT_LSB[2][5] = { |
26 | { 0x46, 0x00, 0x40, 0x42, 0x44 }, |
27 | { 0x45, 0x00, 0x3f, 0x41, 0x43 }, |
28 | }; |
29 | |
30 | static const u8 REG_VOLTAGE_LIMIT_MSB[5] = { 0x48, 0x00, 0x47, 0x47, 0x48 }; |
31 | |
32 | static const u8 REG_VOLTAGE_LIMIT_MSB_SHIFT[2][5] = { |
33 | { 0, 0, 4, 0, 4 }, |
34 | { 2, 0, 6, 2, 6 }, |
35 | }; |
36 | |
37 | #define REG_BANK 0x00 |
38 | #define REG_TEMP_LSB 0x05 |
39 | #define REG_TEMP_PECI_LSB 0x08 |
40 | #define REG_VOLTAGE_LOW 0x0f |
41 | #define REG_FANCOUNT_LOW 0x13 |
42 | #define REG_START 0x21 |
43 | #define REG_MODE 0x22 /* 7.2.32 Mode Selection Register */ |
44 | #define REG_PECI_ENABLE 0x23 |
45 | #define REG_FAN_ENABLE 0x24 |
46 | #define REG_VMON_ENABLE 0x25 |
47 | #define REG_PWM(x) (0x60 + (x)) |
48 | #define REG_SMARTFAN_EN(x) (0x64 + (x) / 2) |
49 | #define SMARTFAN_EN_SHIFT(x) ((x) % 2 * 4) |
50 | #define REG_VENDOR_ID 0xfd |
51 | #define REG_CHIP_ID 0xfe |
52 | #define REG_VERSION_ID 0xff |
53 | |
54 | /* |
55 | * Resistance temperature detector (RTD) modes according to 7.2.32 Mode |
56 | * Selection Register |
57 | */ |
58 | #define RTD_MODE_CURRENT 0x1 |
59 | #define RTD_MODE_THERMISTOR 0x2 |
60 | #define RTD_MODE_VOLTAGE 0x3 |
61 | |
62 | #define MODE_RTD_MASK 0x3 |
63 | #define MODE_LTD_EN 0x40 |
64 | |
65 | /* |
66 | * Bit offset for sensors modes in REG_MODE. |
67 | * Valid for index 0..2, indicating RTD1..3. |
68 | */ |
69 | #define MODE_BIT_OFFSET_RTD(index) ((index) * 2) |
70 | |
71 | /* |
72 | * Data structures and manipulation thereof |
73 | */ |
74 | |
75 | struct nct7802_data { |
76 | struct regmap *regmap; |
77 | struct mutex access_lock; /* for multi-byte read and write operations */ |
78 | u8 in_status; |
79 | struct mutex in_alarm_lock; |
80 | }; |
81 | |
82 | static ssize_t temp_type_show(struct device *dev, |
83 | struct device_attribute *attr, char *buf) |
84 | { |
85 | struct nct7802_data *data = dev_get_drvdata(dev); |
86 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
87 | unsigned int mode; |
88 | int ret; |
89 | |
90 | ret = regmap_read(map: data->regmap, REG_MODE, val: &mode); |
91 | if (ret < 0) |
92 | return ret; |
93 | |
94 | return sprintf(buf, fmt: "%u\n" , (mode >> (2 * sattr->index) & 3) + 2); |
95 | } |
96 | |
97 | static ssize_t temp_type_store(struct device *dev, |
98 | struct device_attribute *attr, const char *buf, |
99 | size_t count) |
100 | { |
101 | struct nct7802_data *data = dev_get_drvdata(dev); |
102 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
103 | unsigned int type; |
104 | int err; |
105 | |
106 | err = kstrtouint(s: buf, base: 0, res: &type); |
107 | if (err < 0) |
108 | return err; |
109 | if (sattr->index == 2 && type != 4) /* RD3 */ |
110 | return -EINVAL; |
111 | if (type < 3 || type > 4) |
112 | return -EINVAL; |
113 | err = regmap_update_bits(map: data->regmap, REG_MODE, |
114 | mask: 3 << 2 * sattr->index, val: (type - 2) << 2 * sattr->index); |
115 | return err ? : count; |
116 | } |
117 | |
118 | static ssize_t pwm_mode_show(struct device *dev, |
119 | struct device_attribute *attr, char *buf) |
120 | { |
121 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
122 | struct nct7802_data *data = dev_get_drvdata(dev); |
123 | unsigned int regval; |
124 | int ret; |
125 | |
126 | if (sattr->index > 1) |
127 | return sprintf(buf, fmt: "1\n" ); |
128 | |
129 | ret = regmap_read(map: data->regmap, reg: 0x5E, val: ®val); |
130 | if (ret < 0) |
131 | return ret; |
132 | |
133 | return sprintf(buf, fmt: "%u\n" , !(regval & (1 << sattr->index))); |
134 | } |
135 | |
136 | static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, |
137 | char *buf) |
138 | { |
139 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
140 | struct nct7802_data *data = dev_get_drvdata(dev); |
141 | unsigned int val; |
142 | int ret; |
143 | |
144 | if (!attr->index) |
145 | return sprintf(buf, fmt: "255\n" ); |
146 | |
147 | ret = regmap_read(map: data->regmap, reg: attr->index, val: &val); |
148 | if (ret < 0) |
149 | return ret; |
150 | |
151 | return sprintf(buf, fmt: "%d\n" , val); |
152 | } |
153 | |
154 | static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, |
155 | const char *buf, size_t count) |
156 | { |
157 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
158 | struct nct7802_data *data = dev_get_drvdata(dev); |
159 | int err; |
160 | u8 val; |
161 | |
162 | err = kstrtou8(s: buf, base: 0, res: &val); |
163 | if (err < 0) |
164 | return err; |
165 | |
166 | err = regmap_write(map: data->regmap, reg: attr->index, val); |
167 | return err ? : count; |
168 | } |
169 | |
170 | static ssize_t pwm_enable_show(struct device *dev, |
171 | struct device_attribute *attr, char *buf) |
172 | { |
173 | struct nct7802_data *data = dev_get_drvdata(dev); |
174 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
175 | unsigned int reg, enabled; |
176 | int ret; |
177 | |
178 | ret = regmap_read(map: data->regmap, REG_SMARTFAN_EN(sattr->index), val: ®); |
179 | if (ret < 0) |
180 | return ret; |
181 | enabled = reg >> SMARTFAN_EN_SHIFT(sattr->index) & 1; |
182 | return sprintf(buf, fmt: "%u\n" , enabled + 1); |
183 | } |
184 | |
185 | static ssize_t pwm_enable_store(struct device *dev, |
186 | struct device_attribute *attr, |
187 | const char *buf, size_t count) |
188 | { |
189 | struct nct7802_data *data = dev_get_drvdata(dev); |
190 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
191 | u8 val; |
192 | int ret; |
193 | |
194 | ret = kstrtou8(s: buf, base: 0, res: &val); |
195 | if (ret < 0) |
196 | return ret; |
197 | if (val < 1 || val > 2) |
198 | return -EINVAL; |
199 | ret = regmap_update_bits(map: data->regmap, REG_SMARTFAN_EN(sattr->index), |
200 | mask: 1 << SMARTFAN_EN_SHIFT(sattr->index), |
201 | val: (val - 1) << SMARTFAN_EN_SHIFT(sattr->index)); |
202 | return ret ? : count; |
203 | } |
204 | |
205 | static int nct7802_read_temp(struct nct7802_data *data, |
206 | u8 reg_temp, u8 reg_temp_low, int *temp) |
207 | { |
208 | unsigned int t1, t2 = 0; |
209 | int err; |
210 | |
211 | *temp = 0; |
212 | |
213 | mutex_lock(&data->access_lock); |
214 | err = regmap_read(map: data->regmap, reg: reg_temp, val: &t1); |
215 | if (err < 0) |
216 | goto abort; |
217 | t1 <<= 8; |
218 | if (reg_temp_low) { /* 11 bit data */ |
219 | err = regmap_read(map: data->regmap, reg: reg_temp_low, val: &t2); |
220 | if (err < 0) |
221 | goto abort; |
222 | } |
223 | t1 |= t2 & 0xe0; |
224 | *temp = (s16)t1 / 32 * 125; |
225 | abort: |
226 | mutex_unlock(lock: &data->access_lock); |
227 | return err; |
228 | } |
229 | |
230 | static int nct7802_read_fan(struct nct7802_data *data, u8 reg_fan) |
231 | { |
232 | unsigned int f1, f2; |
233 | int ret; |
234 | |
235 | mutex_lock(&data->access_lock); |
236 | ret = regmap_read(map: data->regmap, reg: reg_fan, val: &f1); |
237 | if (ret < 0) |
238 | goto abort; |
239 | ret = regmap_read(map: data->regmap, REG_FANCOUNT_LOW, val: &f2); |
240 | if (ret < 0) |
241 | goto abort; |
242 | ret = (f1 << 5) | (f2 >> 3); |
243 | /* convert fan count to rpm */ |
244 | if (ret == 0x1fff) /* maximum value, assume fan is stopped */ |
245 | ret = 0; |
246 | else if (ret) |
247 | ret = DIV_ROUND_CLOSEST(1350000U, ret); |
248 | abort: |
249 | mutex_unlock(lock: &data->access_lock); |
250 | return ret; |
251 | } |
252 | |
253 | static int nct7802_read_fan_min(struct nct7802_data *data, u8 reg_fan_low, |
254 | u8 reg_fan_high) |
255 | { |
256 | unsigned int f1, f2; |
257 | int ret; |
258 | |
259 | mutex_lock(&data->access_lock); |
260 | ret = regmap_read(map: data->regmap, reg: reg_fan_low, val: &f1); |
261 | if (ret < 0) |
262 | goto abort; |
263 | ret = regmap_read(map: data->regmap, reg: reg_fan_high, val: &f2); |
264 | if (ret < 0) |
265 | goto abort; |
266 | ret = f1 | ((f2 & 0xf8) << 5); |
267 | /* convert fan count to rpm */ |
268 | if (ret == 0x1fff) /* maximum value, assume no limit */ |
269 | ret = 0; |
270 | else if (ret) |
271 | ret = DIV_ROUND_CLOSEST(1350000U, ret); |
272 | else |
273 | ret = 1350000U; |
274 | abort: |
275 | mutex_unlock(lock: &data->access_lock); |
276 | return ret; |
277 | } |
278 | |
279 | static int nct7802_write_fan_min(struct nct7802_data *data, u8 reg_fan_low, |
280 | u8 reg_fan_high, unsigned long limit) |
281 | { |
282 | int err; |
283 | |
284 | if (limit) |
285 | limit = DIV_ROUND_CLOSEST(1350000U, limit); |
286 | else |
287 | limit = 0x1fff; |
288 | limit = clamp_val(limit, 0, 0x1fff); |
289 | |
290 | mutex_lock(&data->access_lock); |
291 | err = regmap_write(map: data->regmap, reg: reg_fan_low, val: limit & 0xff); |
292 | if (err < 0) |
293 | goto abort; |
294 | |
295 | err = regmap_write(map: data->regmap, reg: reg_fan_high, val: (limit & 0x1f00) >> 5); |
296 | abort: |
297 | mutex_unlock(lock: &data->access_lock); |
298 | return err; |
299 | } |
300 | |
301 | static u8 nct7802_vmul[] = { 4, 2, 2, 2, 2 }; |
302 | |
303 | static int nct7802_read_voltage(struct nct7802_data *data, int nr, int index) |
304 | { |
305 | unsigned int v1, v2; |
306 | int ret; |
307 | |
308 | mutex_lock(&data->access_lock); |
309 | if (index == 0) { /* voltage */ |
310 | ret = regmap_read(map: data->regmap, reg: REG_VOLTAGE[nr], val: &v1); |
311 | if (ret < 0) |
312 | goto abort; |
313 | ret = regmap_read(map: data->regmap, REG_VOLTAGE_LOW, val: &v2); |
314 | if (ret < 0) |
315 | goto abort; |
316 | ret = ((v1 << 2) | (v2 >> 6)) * nct7802_vmul[nr]; |
317 | } else { /* limit */ |
318 | int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; |
319 | |
320 | ret = regmap_read(map: data->regmap, |
321 | reg: REG_VOLTAGE_LIMIT_LSB[index - 1][nr], val: &v1); |
322 | if (ret < 0) |
323 | goto abort; |
324 | ret = regmap_read(map: data->regmap, reg: REG_VOLTAGE_LIMIT_MSB[nr], |
325 | val: &v2); |
326 | if (ret < 0) |
327 | goto abort; |
328 | ret = (v1 | ((v2 << shift) & 0x300)) * nct7802_vmul[nr]; |
329 | } |
330 | abort: |
331 | mutex_unlock(lock: &data->access_lock); |
332 | return ret; |
333 | } |
334 | |
335 | static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index, |
336 | unsigned long voltage) |
337 | { |
338 | int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; |
339 | int err; |
340 | |
341 | voltage = clamp_val(voltage, 0, 0x3ff * nct7802_vmul[nr]); |
342 | voltage = DIV_ROUND_CLOSEST(voltage, nct7802_vmul[nr]); |
343 | |
344 | mutex_lock(&data->access_lock); |
345 | err = regmap_write(map: data->regmap, |
346 | reg: REG_VOLTAGE_LIMIT_LSB[index - 1][nr], |
347 | val: voltage & 0xff); |
348 | if (err < 0) |
349 | goto abort; |
350 | |
351 | err = regmap_update_bits(map: data->regmap, reg: REG_VOLTAGE_LIMIT_MSB[nr], |
352 | mask: 0x0300 >> shift, val: (voltage & 0x0300) >> shift); |
353 | abort: |
354 | mutex_unlock(lock: &data->access_lock); |
355 | return err; |
356 | } |
357 | |
358 | static ssize_t in_show(struct device *dev, struct device_attribute *attr, |
359 | char *buf) |
360 | { |
361 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
362 | struct nct7802_data *data = dev_get_drvdata(dev); |
363 | int voltage; |
364 | |
365 | voltage = nct7802_read_voltage(data, nr: sattr->nr, index: sattr->index); |
366 | if (voltage < 0) |
367 | return voltage; |
368 | |
369 | return sprintf(buf, fmt: "%d\n" , voltage); |
370 | } |
371 | |
372 | static ssize_t in_store(struct device *dev, struct device_attribute *attr, |
373 | const char *buf, size_t count) |
374 | { |
375 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
376 | struct nct7802_data *data = dev_get_drvdata(dev); |
377 | int index = sattr->index; |
378 | int nr = sattr->nr; |
379 | unsigned long val; |
380 | int err; |
381 | |
382 | err = kstrtoul(s: buf, base: 10, res: &val); |
383 | if (err < 0) |
384 | return err; |
385 | |
386 | err = nct7802_write_voltage(data, nr, index, voltage: val); |
387 | return err ? : count; |
388 | } |
389 | |
390 | static ssize_t in_alarm_show(struct device *dev, struct device_attribute *attr, |
391 | char *buf) |
392 | { |
393 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
394 | struct nct7802_data *data = dev_get_drvdata(dev); |
395 | int volt, min, max, ret; |
396 | unsigned int val; |
397 | |
398 | mutex_lock(&data->in_alarm_lock); |
399 | |
400 | /* |
401 | * The SMI Voltage status register is the only register giving a status |
402 | * for voltages. A bit is set for each input crossing a threshold, in |
403 | * both direction, but the "inside" or "outside" limits info is not |
404 | * available. Also this register is cleared on read. |
405 | * Note: this is not explicitly spelled out in the datasheet, but |
406 | * from experiment. |
407 | * To deal with this we use a status cache with one validity bit and |
408 | * one status bit for each input. Validity is cleared at startup and |
409 | * each time the register reports a change, and the status is processed |
410 | * by software based on current input value and limits. |
411 | */ |
412 | ret = regmap_read(map: data->regmap, reg: 0x1e, val: &val); /* SMI Voltage status */ |
413 | if (ret < 0) |
414 | goto abort; |
415 | |
416 | /* invalidate cached status for all inputs crossing a threshold */ |
417 | data->in_status &= ~((val & 0x0f) << 4); |
418 | |
419 | /* if cached status for requested input is invalid, update it */ |
420 | if (!(data->in_status & (0x10 << sattr->index))) { |
421 | ret = nct7802_read_voltage(data, nr: sattr->nr, index: 0); |
422 | if (ret < 0) |
423 | goto abort; |
424 | volt = ret; |
425 | |
426 | ret = nct7802_read_voltage(data, nr: sattr->nr, index: 1); |
427 | if (ret < 0) |
428 | goto abort; |
429 | min = ret; |
430 | |
431 | ret = nct7802_read_voltage(data, nr: sattr->nr, index: 2); |
432 | if (ret < 0) |
433 | goto abort; |
434 | max = ret; |
435 | |
436 | if (volt < min || volt > max) |
437 | data->in_status |= (1 << sattr->index); |
438 | else |
439 | data->in_status &= ~(1 << sattr->index); |
440 | |
441 | data->in_status |= 0x10 << sattr->index; |
442 | } |
443 | |
444 | ret = sprintf(buf, fmt: "%u\n" , !!(data->in_status & (1 << sattr->index))); |
445 | abort: |
446 | mutex_unlock(lock: &data->in_alarm_lock); |
447 | return ret; |
448 | } |
449 | |
450 | static ssize_t temp_show(struct device *dev, struct device_attribute *attr, |
451 | char *buf) |
452 | { |
453 | struct nct7802_data *data = dev_get_drvdata(dev); |
454 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
455 | int err, temp; |
456 | |
457 | err = nct7802_read_temp(data, reg_temp: sattr->nr, reg_temp_low: sattr->index, temp: &temp); |
458 | if (err < 0) |
459 | return err; |
460 | |
461 | return sprintf(buf, fmt: "%d\n" , temp); |
462 | } |
463 | |
464 | static ssize_t temp_store(struct device *dev, struct device_attribute *attr, |
465 | const char *buf, size_t count) |
466 | { |
467 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
468 | struct nct7802_data *data = dev_get_drvdata(dev); |
469 | int nr = sattr->nr; |
470 | long val; |
471 | int err; |
472 | |
473 | err = kstrtol(s: buf, base: 10, res: &val); |
474 | if (err < 0) |
475 | return err; |
476 | |
477 | val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000); |
478 | |
479 | err = regmap_write(map: data->regmap, reg: nr, val: val & 0xff); |
480 | return err ? : count; |
481 | } |
482 | |
483 | static ssize_t fan_show(struct device *dev, struct device_attribute *attr, |
484 | char *buf) |
485 | { |
486 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
487 | struct nct7802_data *data = dev_get_drvdata(dev); |
488 | int speed; |
489 | |
490 | speed = nct7802_read_fan(data, reg_fan: sattr->index); |
491 | if (speed < 0) |
492 | return speed; |
493 | |
494 | return sprintf(buf, fmt: "%d\n" , speed); |
495 | } |
496 | |
497 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
498 | char *buf) |
499 | { |
500 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
501 | struct nct7802_data *data = dev_get_drvdata(dev); |
502 | int speed; |
503 | |
504 | speed = nct7802_read_fan_min(data, reg_fan_low: sattr->nr, reg_fan_high: sattr->index); |
505 | if (speed < 0) |
506 | return speed; |
507 | |
508 | return sprintf(buf, fmt: "%d\n" , speed); |
509 | } |
510 | |
511 | static ssize_t fan_min_store(struct device *dev, |
512 | struct device_attribute *attr, const char *buf, |
513 | size_t count) |
514 | { |
515 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
516 | struct nct7802_data *data = dev_get_drvdata(dev); |
517 | unsigned long val; |
518 | int err; |
519 | |
520 | err = kstrtoul(s: buf, base: 10, res: &val); |
521 | if (err < 0) |
522 | return err; |
523 | |
524 | err = nct7802_write_fan_min(data, reg_fan_low: sattr->nr, reg_fan_high: sattr->index, limit: val); |
525 | return err ? : count; |
526 | } |
527 | |
528 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
529 | char *buf) |
530 | { |
531 | struct nct7802_data *data = dev_get_drvdata(dev); |
532 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
533 | int bit = sattr->index; |
534 | unsigned int val; |
535 | int ret; |
536 | |
537 | ret = regmap_read(map: data->regmap, reg: sattr->nr, val: &val); |
538 | if (ret < 0) |
539 | return ret; |
540 | |
541 | return sprintf(buf, fmt: "%u\n" , !!(val & (1 << bit))); |
542 | } |
543 | |
544 | static ssize_t |
545 | beep_show(struct device *dev, struct device_attribute *attr, char *buf) |
546 | { |
547 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
548 | struct nct7802_data *data = dev_get_drvdata(dev); |
549 | unsigned int regval; |
550 | int err; |
551 | |
552 | err = regmap_read(map: data->regmap, reg: sattr->nr, val: ®val); |
553 | if (err) |
554 | return err; |
555 | |
556 | return sprintf(buf, fmt: "%u\n" , !!(regval & (1 << sattr->index))); |
557 | } |
558 | |
559 | static ssize_t |
560 | beep_store(struct device *dev, struct device_attribute *attr, const char *buf, |
561 | size_t count) |
562 | { |
563 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
564 | struct nct7802_data *data = dev_get_drvdata(dev); |
565 | unsigned long val; |
566 | int err; |
567 | |
568 | err = kstrtoul(s: buf, base: 10, res: &val); |
569 | if (err < 0) |
570 | return err; |
571 | if (val > 1) |
572 | return -EINVAL; |
573 | |
574 | err = regmap_update_bits(map: data->regmap, reg: sattr->nr, mask: 1 << sattr->index, |
575 | val: val ? 1 << sattr->index : 0); |
576 | return err ? : count; |
577 | } |
578 | |
579 | static SENSOR_DEVICE_ATTR_RW(temp1_type, temp_type, 0); |
580 | static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0x01, REG_TEMP_LSB); |
581 | static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, 0x31, 0); |
582 | static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0x30, 0); |
583 | static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 0x3a, 0); |
584 | |
585 | static SENSOR_DEVICE_ATTR_RW(temp2_type, temp_type, 1); |
586 | static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 0x02, REG_TEMP_LSB); |
587 | static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, 0x33, 0); |
588 | static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 0x32, 0); |
589 | static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 0x3b, 0); |
590 | |
591 | static SENSOR_DEVICE_ATTR_RW(temp3_type, temp_type, 2); |
592 | static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 0x03, REG_TEMP_LSB); |
593 | static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, 0x35, 0); |
594 | static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 0x34, 0); |
595 | static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 0x3c, 0); |
596 | |
597 | static SENSOR_DEVICE_ATTR_2_RO(temp4_input, temp, 0x04, 0); |
598 | static SENSOR_DEVICE_ATTR_2_RW(temp4_min, temp, 0x37, 0); |
599 | static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 0x36, 0); |
600 | static SENSOR_DEVICE_ATTR_2_RW(temp4_crit, temp, 0x3d, 0); |
601 | |
602 | static SENSOR_DEVICE_ATTR_2_RO(temp5_input, temp, 0x06, REG_TEMP_PECI_LSB); |
603 | static SENSOR_DEVICE_ATTR_2_RW(temp5_min, temp, 0x39, 0); |
604 | static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 0x38, 0); |
605 | static SENSOR_DEVICE_ATTR_2_RW(temp5_crit, temp, 0x3e, 0); |
606 | |
607 | static SENSOR_DEVICE_ATTR_2_RO(temp6_input, temp, 0x07, REG_TEMP_PECI_LSB); |
608 | |
609 | static SENSOR_DEVICE_ATTR_2_RO(temp1_min_alarm, alarm, 0x18, 0); |
610 | static SENSOR_DEVICE_ATTR_2_RO(temp2_min_alarm, alarm, 0x18, 1); |
611 | static SENSOR_DEVICE_ATTR_2_RO(temp3_min_alarm, alarm, 0x18, 2); |
612 | static SENSOR_DEVICE_ATTR_2_RO(temp4_min_alarm, alarm, 0x18, 3); |
613 | static SENSOR_DEVICE_ATTR_2_RO(temp5_min_alarm, alarm, 0x18, 4); |
614 | |
615 | static SENSOR_DEVICE_ATTR_2_RO(temp1_max_alarm, alarm, 0x19, 0); |
616 | static SENSOR_DEVICE_ATTR_2_RO(temp2_max_alarm, alarm, 0x19, 1); |
617 | static SENSOR_DEVICE_ATTR_2_RO(temp3_max_alarm, alarm, 0x19, 2); |
618 | static SENSOR_DEVICE_ATTR_2_RO(temp4_max_alarm, alarm, 0x19, 3); |
619 | static SENSOR_DEVICE_ATTR_2_RO(temp5_max_alarm, alarm, 0x19, 4); |
620 | |
621 | static SENSOR_DEVICE_ATTR_2_RO(temp1_crit_alarm, alarm, 0x1b, 0); |
622 | static SENSOR_DEVICE_ATTR_2_RO(temp2_crit_alarm, alarm, 0x1b, 1); |
623 | static SENSOR_DEVICE_ATTR_2_RO(temp3_crit_alarm, alarm, 0x1b, 2); |
624 | static SENSOR_DEVICE_ATTR_2_RO(temp4_crit_alarm, alarm, 0x1b, 3); |
625 | static SENSOR_DEVICE_ATTR_2_RO(temp5_crit_alarm, alarm, 0x1b, 4); |
626 | |
627 | static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, alarm, 0x17, 0); |
628 | static SENSOR_DEVICE_ATTR_2_RO(temp2_fault, alarm, 0x17, 1); |
629 | static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, alarm, 0x17, 2); |
630 | |
631 | static SENSOR_DEVICE_ATTR_2_RW(temp1_beep, beep, 0x5c, 0); |
632 | static SENSOR_DEVICE_ATTR_2_RW(temp2_beep, beep, 0x5c, 1); |
633 | static SENSOR_DEVICE_ATTR_2_RW(temp3_beep, beep, 0x5c, 2); |
634 | static SENSOR_DEVICE_ATTR_2_RW(temp4_beep, beep, 0x5c, 3); |
635 | static SENSOR_DEVICE_ATTR_2_RW(temp5_beep, beep, 0x5c, 4); |
636 | static SENSOR_DEVICE_ATTR_2_RW(temp6_beep, beep, 0x5c, 5); |
637 | |
638 | static struct attribute *nct7802_temp_attrs[] = { |
639 | &sensor_dev_attr_temp1_type.dev_attr.attr, |
640 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
641 | &sensor_dev_attr_temp1_min.dev_attr.attr, |
642 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
643 | &sensor_dev_attr_temp1_crit.dev_attr.attr, |
644 | &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, |
645 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, |
646 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, |
647 | &sensor_dev_attr_temp1_fault.dev_attr.attr, |
648 | &sensor_dev_attr_temp1_beep.dev_attr.attr, |
649 | |
650 | &sensor_dev_attr_temp2_type.dev_attr.attr, /* 10 */ |
651 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
652 | &sensor_dev_attr_temp2_min.dev_attr.attr, |
653 | &sensor_dev_attr_temp2_max.dev_attr.attr, |
654 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
655 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
656 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, |
657 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, |
658 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
659 | &sensor_dev_attr_temp2_beep.dev_attr.attr, |
660 | |
661 | &sensor_dev_attr_temp3_type.dev_attr.attr, /* 20 */ |
662 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
663 | &sensor_dev_attr_temp3_min.dev_attr.attr, |
664 | &sensor_dev_attr_temp3_max.dev_attr.attr, |
665 | &sensor_dev_attr_temp3_crit.dev_attr.attr, |
666 | &sensor_dev_attr_temp3_min_alarm.dev_attr.attr, |
667 | &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, |
668 | &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, |
669 | &sensor_dev_attr_temp3_fault.dev_attr.attr, |
670 | &sensor_dev_attr_temp3_beep.dev_attr.attr, |
671 | |
672 | &sensor_dev_attr_temp4_input.dev_attr.attr, /* 30 */ |
673 | &sensor_dev_attr_temp4_min.dev_attr.attr, |
674 | &sensor_dev_attr_temp4_max.dev_attr.attr, |
675 | &sensor_dev_attr_temp4_crit.dev_attr.attr, |
676 | &sensor_dev_attr_temp4_min_alarm.dev_attr.attr, |
677 | &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, |
678 | &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr, |
679 | &sensor_dev_attr_temp4_beep.dev_attr.attr, |
680 | |
681 | &sensor_dev_attr_temp5_input.dev_attr.attr, /* 38 */ |
682 | &sensor_dev_attr_temp5_min.dev_attr.attr, |
683 | &sensor_dev_attr_temp5_max.dev_attr.attr, |
684 | &sensor_dev_attr_temp5_crit.dev_attr.attr, |
685 | &sensor_dev_attr_temp5_min_alarm.dev_attr.attr, |
686 | &sensor_dev_attr_temp5_max_alarm.dev_attr.attr, |
687 | &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr, |
688 | &sensor_dev_attr_temp5_beep.dev_attr.attr, |
689 | |
690 | &sensor_dev_attr_temp6_input.dev_attr.attr, /* 46 */ |
691 | &sensor_dev_attr_temp6_beep.dev_attr.attr, |
692 | |
693 | NULL |
694 | }; |
695 | |
696 | static umode_t nct7802_temp_is_visible(struct kobject *kobj, |
697 | struct attribute *attr, int index) |
698 | { |
699 | struct device *dev = kobj_to_dev(kobj); |
700 | struct nct7802_data *data = dev_get_drvdata(dev); |
701 | unsigned int reg; |
702 | int err; |
703 | |
704 | err = regmap_read(map: data->regmap, REG_MODE, val: ®); |
705 | if (err < 0) |
706 | return 0; |
707 | |
708 | if (index < 10 && |
709 | (reg & 03) != 0x01 && (reg & 0x03) != 0x02) /* RD1 */ |
710 | return 0; |
711 | |
712 | if (index >= 10 && index < 20 && |
713 | (reg & 0x0c) != 0x04 && (reg & 0x0c) != 0x08) /* RD2 */ |
714 | return 0; |
715 | if (index >= 20 && index < 30 && (reg & 0x30) != 0x20) /* RD3 */ |
716 | return 0; |
717 | |
718 | if (index >= 30 && index < 38) /* local */ |
719 | return attr->mode; |
720 | |
721 | err = regmap_read(map: data->regmap, REG_PECI_ENABLE, val: ®); |
722 | if (err < 0) |
723 | return 0; |
724 | |
725 | if (index >= 38 && index < 46 && !(reg & 0x01)) /* PECI 0 */ |
726 | return 0; |
727 | |
728 | if (index >= 46 && !(reg & 0x02)) /* PECI 1 */ |
729 | return 0; |
730 | |
731 | return attr->mode; |
732 | } |
733 | |
734 | static const struct attribute_group nct7802_temp_group = { |
735 | .attrs = nct7802_temp_attrs, |
736 | .is_visible = nct7802_temp_is_visible, |
737 | }; |
738 | |
739 | static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, 0, 0); |
740 | static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, 0, 1); |
741 | static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, 0, 2); |
742 | static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, in_alarm, 0, 3); |
743 | static SENSOR_DEVICE_ATTR_2_RW(in0_beep, beep, 0x5a, 3); |
744 | |
745 | static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, 1, 0); |
746 | |
747 | static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, 2, 0); |
748 | static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, 2, 1); |
749 | static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, 2, 2); |
750 | static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, in_alarm, 2, 0); |
751 | static SENSOR_DEVICE_ATTR_2_RW(in2_beep, beep, 0x5a, 0); |
752 | |
753 | static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, 3, 0); |
754 | static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, 3, 1); |
755 | static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, 3, 2); |
756 | static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, in_alarm, 3, 1); |
757 | static SENSOR_DEVICE_ATTR_2_RW(in3_beep, beep, 0x5a, 1); |
758 | |
759 | static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, 4, 0); |
760 | static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, 4, 1); |
761 | static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, 4, 2); |
762 | static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, in_alarm, 4, 2); |
763 | static SENSOR_DEVICE_ATTR_2_RW(in4_beep, beep, 0x5a, 2); |
764 | |
765 | static struct attribute *nct7802_in_attrs[] = { |
766 | &sensor_dev_attr_in0_input.dev_attr.attr, |
767 | &sensor_dev_attr_in0_min.dev_attr.attr, |
768 | &sensor_dev_attr_in0_max.dev_attr.attr, |
769 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
770 | &sensor_dev_attr_in0_beep.dev_attr.attr, |
771 | |
772 | &sensor_dev_attr_in1_input.dev_attr.attr, /* 5 */ |
773 | |
774 | &sensor_dev_attr_in2_input.dev_attr.attr, /* 6 */ |
775 | &sensor_dev_attr_in2_min.dev_attr.attr, |
776 | &sensor_dev_attr_in2_max.dev_attr.attr, |
777 | &sensor_dev_attr_in2_alarm.dev_attr.attr, |
778 | &sensor_dev_attr_in2_beep.dev_attr.attr, |
779 | |
780 | &sensor_dev_attr_in3_input.dev_attr.attr, /* 11 */ |
781 | &sensor_dev_attr_in3_min.dev_attr.attr, |
782 | &sensor_dev_attr_in3_max.dev_attr.attr, |
783 | &sensor_dev_attr_in3_alarm.dev_attr.attr, |
784 | &sensor_dev_attr_in3_beep.dev_attr.attr, |
785 | |
786 | &sensor_dev_attr_in4_input.dev_attr.attr, /* 16 */ |
787 | &sensor_dev_attr_in4_min.dev_attr.attr, |
788 | &sensor_dev_attr_in4_max.dev_attr.attr, |
789 | &sensor_dev_attr_in4_alarm.dev_attr.attr, |
790 | &sensor_dev_attr_in4_beep.dev_attr.attr, |
791 | |
792 | NULL, |
793 | }; |
794 | |
795 | static umode_t nct7802_in_is_visible(struct kobject *kobj, |
796 | struct attribute *attr, int index) |
797 | { |
798 | struct device *dev = kobj_to_dev(kobj); |
799 | struct nct7802_data *data = dev_get_drvdata(dev); |
800 | unsigned int reg; |
801 | int err; |
802 | |
803 | if (index < 6) /* VCC, VCORE */ |
804 | return attr->mode; |
805 | |
806 | err = regmap_read(map: data->regmap, REG_MODE, val: ®); |
807 | if (err < 0) |
808 | return 0; |
809 | |
810 | if (index >= 6 && index < 11 && (reg & 0x03) != 0x03) /* VSEN1 */ |
811 | return 0; |
812 | if (index >= 11 && index < 16 && (reg & 0x0c) != 0x0c) /* VSEN2 */ |
813 | return 0; |
814 | if (index >= 16 && (reg & 0x30) != 0x30) /* VSEN3 */ |
815 | return 0; |
816 | |
817 | return attr->mode; |
818 | } |
819 | |
820 | static const struct attribute_group nct7802_in_group = { |
821 | .attrs = nct7802_in_attrs, |
822 | .is_visible = nct7802_in_is_visible, |
823 | }; |
824 | |
825 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0x10); |
826 | static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan_min, 0x49, 0x4c); |
827 | static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, alarm, 0x1a, 0); |
828 | static SENSOR_DEVICE_ATTR_2_RW(fan1_beep, beep, 0x5b, 0); |
829 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 0x11); |
830 | static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan_min, 0x4a, 0x4d); |
831 | static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, alarm, 0x1a, 1); |
832 | static SENSOR_DEVICE_ATTR_2_RW(fan2_beep, beep, 0x5b, 1); |
833 | static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 0x12); |
834 | static SENSOR_DEVICE_ATTR_2_RW(fan3_min, fan_min, 0x4b, 0x4e); |
835 | static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, alarm, 0x1a, 2); |
836 | static SENSOR_DEVICE_ATTR_2_RW(fan3_beep, beep, 0x5b, 2); |
837 | |
838 | /* 7.2.89 Fan Control Output Type */ |
839 | static SENSOR_DEVICE_ATTR_RO(pwm1_mode, pwm_mode, 0); |
840 | static SENSOR_DEVICE_ATTR_RO(pwm2_mode, pwm_mode, 1); |
841 | static SENSOR_DEVICE_ATTR_RO(pwm3_mode, pwm_mode, 2); |
842 | |
843 | /* 7.2.91... Fan Control Output Value */ |
844 | static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, REG_PWM(0)); |
845 | static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, REG_PWM(1)); |
846 | static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, REG_PWM(2)); |
847 | |
848 | /* 7.2.95... Temperature to Fan mapping Relationships Register */ |
849 | static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0); |
850 | static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1); |
851 | static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2); |
852 | |
853 | static struct attribute *nct7802_fan_attrs[] = { |
854 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
855 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
856 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
857 | &sensor_dev_attr_fan1_beep.dev_attr.attr, |
858 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
859 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
860 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
861 | &sensor_dev_attr_fan2_beep.dev_attr.attr, |
862 | &sensor_dev_attr_fan3_input.dev_attr.attr, |
863 | &sensor_dev_attr_fan3_min.dev_attr.attr, |
864 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
865 | &sensor_dev_attr_fan3_beep.dev_attr.attr, |
866 | |
867 | NULL |
868 | }; |
869 | |
870 | static umode_t nct7802_fan_is_visible(struct kobject *kobj, |
871 | struct attribute *attr, int index) |
872 | { |
873 | struct device *dev = kobj_to_dev(kobj); |
874 | struct nct7802_data *data = dev_get_drvdata(dev); |
875 | int fan = index / 4; /* 4 attributes per fan */ |
876 | unsigned int reg; |
877 | int err; |
878 | |
879 | err = regmap_read(map: data->regmap, REG_FAN_ENABLE, val: ®); |
880 | if (err < 0 || !(reg & (1 << fan))) |
881 | return 0; |
882 | |
883 | return attr->mode; |
884 | } |
885 | |
886 | static const struct attribute_group nct7802_fan_group = { |
887 | .attrs = nct7802_fan_attrs, |
888 | .is_visible = nct7802_fan_is_visible, |
889 | }; |
890 | |
891 | static struct attribute *nct7802_pwm_attrs[] = { |
892 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
893 | &sensor_dev_attr_pwm1_mode.dev_attr.attr, |
894 | &sensor_dev_attr_pwm1.dev_attr.attr, |
895 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
896 | &sensor_dev_attr_pwm2_mode.dev_attr.attr, |
897 | &sensor_dev_attr_pwm2.dev_attr.attr, |
898 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
899 | &sensor_dev_attr_pwm3_mode.dev_attr.attr, |
900 | &sensor_dev_attr_pwm3.dev_attr.attr, |
901 | NULL |
902 | }; |
903 | |
904 | static const struct attribute_group nct7802_pwm_group = { |
905 | .attrs = nct7802_pwm_attrs, |
906 | }; |
907 | |
908 | /* 7.2.115... 0x80-0x83, 0x84 Temperature (X-axis) transition */ |
909 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_temp, temp, 0x80, 0); |
910 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_temp, temp, 0x81, 0); |
911 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_temp, temp, 0x82, 0); |
912 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_temp, temp, 0x83, 0); |
913 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_temp, temp, 0x84, 0); |
914 | |
915 | /* 7.2.120... 0x85-0x88 PWM (Y-axis) transition */ |
916 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point1_pwm, pwm, 0x85); |
917 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_pwm, pwm, 0x86); |
918 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point3_pwm, pwm, 0x87); |
919 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point4_pwm, pwm, 0x88); |
920 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point5_pwm, pwm, 0); |
921 | |
922 | /* 7.2.124 Table 2 X-axis Transition Point 1 Register */ |
923 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_temp, temp, 0x90, 0); |
924 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_temp, temp, 0x91, 0); |
925 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_temp, temp, 0x92, 0); |
926 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_temp, temp, 0x93, 0); |
927 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_temp, temp, 0x94, 0); |
928 | |
929 | /* 7.2.129 Table 2 Y-axis Transition Point 1 Register */ |
930 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point1_pwm, pwm, 0x95); |
931 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point2_pwm, pwm, 0x96); |
932 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point3_pwm, pwm, 0x97); |
933 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point4_pwm, pwm, 0x98); |
934 | static SENSOR_DEVICE_ATTR_RO(pwm2_auto_point5_pwm, pwm, 0); |
935 | |
936 | /* 7.2.133 Table 3 X-axis Transition Point 1 Register */ |
937 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_temp, temp, 0xA0, 0); |
938 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_temp, temp, 0xA1, 0); |
939 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point3_temp, temp, 0xA2, 0); |
940 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point4_temp, temp, 0xA3, 0); |
941 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point5_temp, temp, 0xA4, 0); |
942 | |
943 | /* 7.2.138 Table 3 Y-axis Transition Point 1 Register */ |
944 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point1_pwm, pwm, 0xA5); |
945 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point2_pwm, pwm, 0xA6); |
946 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point3_pwm, pwm, 0xA7); |
947 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point4_pwm, pwm, 0xA8); |
948 | static SENSOR_DEVICE_ATTR_RO(pwm3_auto_point5_pwm, pwm, 0); |
949 | |
950 | static struct attribute *nct7802_auto_point_attrs[] = { |
951 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, |
952 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, |
953 | &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, |
954 | &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, |
955 | &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, |
956 | |
957 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
958 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, |
959 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, |
960 | &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, |
961 | &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, |
962 | |
963 | &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, |
964 | &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, |
965 | &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, |
966 | &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, |
967 | &sensor_dev_attr_pwm2_auto_point5_temp.dev_attr.attr, |
968 | |
969 | &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, |
970 | &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, |
971 | &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, |
972 | &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, |
973 | &sensor_dev_attr_pwm2_auto_point5_pwm.dev_attr.attr, |
974 | |
975 | &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, |
976 | &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, |
977 | &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, |
978 | &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, |
979 | &sensor_dev_attr_pwm3_auto_point5_temp.dev_attr.attr, |
980 | |
981 | &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, |
982 | &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, |
983 | &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, |
984 | &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, |
985 | &sensor_dev_attr_pwm3_auto_point5_pwm.dev_attr.attr, |
986 | |
987 | NULL |
988 | }; |
989 | |
990 | static const struct attribute_group nct7802_auto_point_group = { |
991 | .attrs = nct7802_auto_point_attrs, |
992 | }; |
993 | |
994 | static const struct attribute_group *nct7802_groups[] = { |
995 | &nct7802_temp_group, |
996 | &nct7802_in_group, |
997 | &nct7802_fan_group, |
998 | &nct7802_pwm_group, |
999 | &nct7802_auto_point_group, |
1000 | NULL |
1001 | }; |
1002 | |
1003 | static int nct7802_detect(struct i2c_client *client, |
1004 | struct i2c_board_info *info) |
1005 | { |
1006 | int reg; |
1007 | |
1008 | /* |
1009 | * Chip identification registers are only available in bank 0, |
1010 | * so only attempt chip detection if bank 0 is selected |
1011 | */ |
1012 | reg = i2c_smbus_read_byte_data(client, REG_BANK); |
1013 | if (reg != 0x00) |
1014 | return -ENODEV; |
1015 | |
1016 | reg = i2c_smbus_read_byte_data(client, REG_VENDOR_ID); |
1017 | if (reg != 0x50) |
1018 | return -ENODEV; |
1019 | |
1020 | reg = i2c_smbus_read_byte_data(client, REG_CHIP_ID); |
1021 | if (reg != 0xc3) |
1022 | return -ENODEV; |
1023 | |
1024 | reg = i2c_smbus_read_byte_data(client, REG_VERSION_ID); |
1025 | if (reg < 0 || (reg & 0xf0) != 0x20) |
1026 | return -ENODEV; |
1027 | |
1028 | /* Also validate lower bits of voltage and temperature registers */ |
1029 | reg = i2c_smbus_read_byte_data(client, REG_TEMP_LSB); |
1030 | if (reg < 0 || (reg & 0x1f)) |
1031 | return -ENODEV; |
1032 | |
1033 | reg = i2c_smbus_read_byte_data(client, REG_TEMP_PECI_LSB); |
1034 | if (reg < 0 || (reg & 0x3f)) |
1035 | return -ENODEV; |
1036 | |
1037 | reg = i2c_smbus_read_byte_data(client, REG_VOLTAGE_LOW); |
1038 | if (reg < 0 || (reg & 0x3f)) |
1039 | return -ENODEV; |
1040 | |
1041 | strscpy(p: info->type, q: "nct7802" , I2C_NAME_SIZE); |
1042 | return 0; |
1043 | } |
1044 | |
1045 | static bool nct7802_regmap_is_volatile(struct device *dev, unsigned int reg) |
1046 | { |
1047 | return (reg != REG_BANK && reg <= 0x20) || |
1048 | (reg >= REG_PWM(0) && reg <= REG_PWM(2)); |
1049 | } |
1050 | |
1051 | static const struct regmap_config nct7802_regmap_config = { |
1052 | .reg_bits = 8, |
1053 | .val_bits = 8, |
1054 | .cache_type = REGCACHE_RBTREE, |
1055 | .volatile_reg = nct7802_regmap_is_volatile, |
1056 | }; |
1057 | |
1058 | static int nct7802_get_channel_config(struct device *dev, |
1059 | struct device_node *node, u8 *mode_mask, |
1060 | u8 *mode_val) |
1061 | { |
1062 | u32 reg; |
1063 | const char *type_str, *md_str; |
1064 | u8 md; |
1065 | |
1066 | if (!node->name || of_node_cmp(node->name, "channel" )) |
1067 | return 0; |
1068 | |
1069 | if (of_property_read_u32(np: node, propname: "reg" , out_value: ®)) { |
1070 | dev_err(dev, "Could not read reg value for '%s'\n" , |
1071 | node->full_name); |
1072 | return -EINVAL; |
1073 | } |
1074 | |
1075 | if (reg > 3) { |
1076 | dev_err(dev, "Invalid reg (%u) in '%s'\n" , reg, |
1077 | node->full_name); |
1078 | return -EINVAL; |
1079 | } |
1080 | |
1081 | if (reg == 0) { |
1082 | if (!of_device_is_available(device: node)) |
1083 | *mode_val &= ~MODE_LTD_EN; |
1084 | else |
1085 | *mode_val |= MODE_LTD_EN; |
1086 | *mode_mask |= MODE_LTD_EN; |
1087 | return 0; |
1088 | } |
1089 | |
1090 | /* At this point we have reg >= 1 && reg <= 3 */ |
1091 | |
1092 | if (!of_device_is_available(device: node)) { |
1093 | *mode_val &= ~(MODE_RTD_MASK << MODE_BIT_OFFSET_RTD(reg - 1)); |
1094 | *mode_mask |= MODE_RTD_MASK << MODE_BIT_OFFSET_RTD(reg - 1); |
1095 | return 0; |
1096 | } |
1097 | |
1098 | if (of_property_read_string(np: node, propname: "sensor-type" , out_string: &type_str)) { |
1099 | dev_err(dev, "No type for '%s'\n" , node->full_name); |
1100 | return -EINVAL; |
1101 | } |
1102 | |
1103 | if (!strcmp(type_str, "voltage" )) { |
1104 | *mode_val |= (RTD_MODE_VOLTAGE & MODE_RTD_MASK) |
1105 | << MODE_BIT_OFFSET_RTD(reg - 1); |
1106 | *mode_mask |= MODE_RTD_MASK << MODE_BIT_OFFSET_RTD(reg - 1); |
1107 | return 0; |
1108 | } |
1109 | |
1110 | if (strcmp(type_str, "temperature" )) { |
1111 | dev_err(dev, "Invalid type '%s' for '%s'\n" , type_str, |
1112 | node->full_name); |
1113 | return -EINVAL; |
1114 | } |
1115 | |
1116 | if (reg == 3) { |
1117 | /* RTD3 only supports thermistor mode */ |
1118 | md = RTD_MODE_THERMISTOR; |
1119 | } else { |
1120 | if (of_property_read_string(np: node, propname: "temperature-mode" , |
1121 | out_string: &md_str)) { |
1122 | dev_err(dev, "No mode for '%s'\n" , node->full_name); |
1123 | return -EINVAL; |
1124 | } |
1125 | |
1126 | if (!strcmp(md_str, "thermal-diode" )) |
1127 | md = RTD_MODE_CURRENT; |
1128 | else if (!strcmp(md_str, "thermistor" )) |
1129 | md = RTD_MODE_THERMISTOR; |
1130 | else { |
1131 | dev_err(dev, "Invalid mode '%s' for '%s'\n" , md_str, |
1132 | node->full_name); |
1133 | return -EINVAL; |
1134 | } |
1135 | } |
1136 | |
1137 | *mode_val |= (md & MODE_RTD_MASK) << MODE_BIT_OFFSET_RTD(reg - 1); |
1138 | *mode_mask |= MODE_RTD_MASK << MODE_BIT_OFFSET_RTD(reg - 1); |
1139 | |
1140 | return 0; |
1141 | } |
1142 | |
1143 | static int nct7802_configure_channels(struct device *dev, |
1144 | struct nct7802_data *data) |
1145 | { |
1146 | /* Enable local temperature sensor by default */ |
1147 | u8 mode_mask = MODE_LTD_EN, mode_val = MODE_LTD_EN; |
1148 | struct device_node *node; |
1149 | int err; |
1150 | |
1151 | if (dev->of_node) { |
1152 | for_each_child_of_node(dev->of_node, node) { |
1153 | err = nct7802_get_channel_config(dev, node, mode_mask: &mode_mask, |
1154 | mode_val: &mode_val); |
1155 | if (err) { |
1156 | of_node_put(node); |
1157 | return err; |
1158 | } |
1159 | } |
1160 | } |
1161 | |
1162 | return regmap_update_bits(map: data->regmap, REG_MODE, mask: mode_mask, val: mode_val); |
1163 | } |
1164 | |
1165 | static int nct7802_init_chip(struct device *dev, struct nct7802_data *data) |
1166 | { |
1167 | int err; |
1168 | |
1169 | /* Enable ADC */ |
1170 | err = regmap_update_bits(map: data->regmap, REG_START, mask: 0x01, val: 0x01); |
1171 | if (err) |
1172 | return err; |
1173 | |
1174 | err = nct7802_configure_channels(dev, data); |
1175 | if (err) |
1176 | return err; |
1177 | |
1178 | /* Enable Vcore and VCC voltage monitoring */ |
1179 | return regmap_update_bits(map: data->regmap, REG_VMON_ENABLE, mask: 0x03, val: 0x03); |
1180 | } |
1181 | |
1182 | static int nct7802_probe(struct i2c_client *client) |
1183 | { |
1184 | struct device *dev = &client->dev; |
1185 | struct nct7802_data *data; |
1186 | struct device *hwmon_dev; |
1187 | int ret; |
1188 | |
1189 | data = devm_kzalloc(dev, size: sizeof(*data), GFP_KERNEL); |
1190 | if (data == NULL) |
1191 | return -ENOMEM; |
1192 | |
1193 | data->regmap = devm_regmap_init_i2c(client, &nct7802_regmap_config); |
1194 | if (IS_ERR(ptr: data->regmap)) |
1195 | return PTR_ERR(ptr: data->regmap); |
1196 | |
1197 | mutex_init(&data->access_lock); |
1198 | mutex_init(&data->in_alarm_lock); |
1199 | |
1200 | ret = nct7802_init_chip(dev, data); |
1201 | if (ret < 0) |
1202 | return ret; |
1203 | |
1204 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, name: client->name, |
1205 | drvdata: data, |
1206 | groups: nct7802_groups); |
1207 | return PTR_ERR_OR_ZERO(ptr: hwmon_dev); |
1208 | } |
1209 | |
1210 | static const unsigned short nct7802_address_list[] = { |
1211 | 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END |
1212 | }; |
1213 | |
1214 | static const struct i2c_device_id nct7802_idtable[] = { |
1215 | { "nct7802" , 0 }, |
1216 | { } |
1217 | }; |
1218 | MODULE_DEVICE_TABLE(i2c, nct7802_idtable); |
1219 | |
1220 | static struct i2c_driver nct7802_driver = { |
1221 | .class = I2C_CLASS_HWMON, |
1222 | .driver = { |
1223 | .name = DRVNAME, |
1224 | }, |
1225 | .detect = nct7802_detect, |
1226 | .probe = nct7802_probe, |
1227 | .id_table = nct7802_idtable, |
1228 | .address_list = nct7802_address_list, |
1229 | }; |
1230 | |
1231 | module_i2c_driver(nct7802_driver); |
1232 | |
1233 | MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>" ); |
1234 | MODULE_DESCRIPTION("NCT7802Y Hardware Monitoring Driver" ); |
1235 | MODULE_LICENSE("GPL v2" ); |
1236 | |