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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
3434f378 GR |
2 | /* |
3 | * nct7802 - Driver for Nuvoton NCT7802Y | |
4 | * | |
5 | * Copyright (C) 2014 Guenter Roeck <linux@roeck-us.net> | |
3434f378 GR |
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] = { | |
7713e62c GB |
26 | { 0x46, 0x00, 0x40, 0x42, 0x44 }, |
27 | { 0x45, 0x00, 0x3f, 0x41, 0x43 }, | |
3434f378 GR |
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 | |
fcdc5739 | 43 | #define REG_MODE 0x22 /* 7.2.32 Mode Selection Register */ |
3434f378 GR |
44 | #define REG_PECI_ENABLE 0x23 |
45 | #define REG_FAN_ENABLE 0x24 | |
46 | #define REG_VMON_ENABLE 0x25 | |
1c6e8f6b | 47 | #define REG_PWM(x) (0x60 + (x)) |
5102f022 CS |
48 | #define REG_SMARTFAN_EN(x) (0x64 + (x) / 2) |
49 | #define SMARTFAN_EN_SHIFT(x) ((x) % 2 * 4) | |
3434f378 GR |
50 | #define REG_VENDOR_ID 0xfd |
51 | #define REG_CHIP_ID 0xfe | |
52 | #define REG_VERSION_ID 0xff | |
53 | ||
54 | /* | |
55 | * Data structures and manipulation thereof | |
56 | */ | |
57 | ||
58 | struct nct7802_data { | |
59 | struct regmap *regmap; | |
60 | struct mutex access_lock; /* for multi-byte read and write operations */ | |
e51a7dda GB |
61 | u8 in_status; |
62 | struct mutex in_alarm_lock; | |
3434f378 GR |
63 | }; |
64 | ||
4aabaf30 GR |
65 | static ssize_t temp_type_show(struct device *dev, |
66 | struct device_attribute *attr, char *buf) | |
fcdc5739 CS |
67 | { |
68 | struct nct7802_data *data = dev_get_drvdata(dev); | |
69 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); | |
70 | unsigned int mode; | |
71 | int ret; | |
72 | ||
73 | ret = regmap_read(data->regmap, REG_MODE, &mode); | |
74 | if (ret < 0) | |
75 | return ret; | |
76 | ||
77 | return sprintf(buf, "%u\n", (mode >> (2 * sattr->index) & 3) + 2); | |
78 | } | |
79 | ||
4aabaf30 GR |
80 | static ssize_t temp_type_store(struct device *dev, |
81 | struct device_attribute *attr, const char *buf, | |
82 | size_t count) | |
fcdc5739 CS |
83 | { |
84 | struct nct7802_data *data = dev_get_drvdata(dev); | |
85 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); | |
86 | unsigned int type; | |
87 | int err; | |
88 | ||
89 | err = kstrtouint(buf, 0, &type); | |
90 | if (err < 0) | |
91 | return err; | |
92 | if (sattr->index == 2 && type != 4) /* RD3 */ | |
93 | return -EINVAL; | |
94 | if (type < 3 || type > 4) | |
95 | return -EINVAL; | |
96 | err = regmap_update_bits(data->regmap, REG_MODE, | |
97 | 3 << 2 * sattr->index, (type - 2) << 2 * sattr->index); | |
98 | return err ? : count; | |
99 | } | |
100 | ||
4aabaf30 GR |
101 | static ssize_t pwm_mode_show(struct device *dev, |
102 | struct device_attribute *attr, char *buf) | |
876420e0 CS |
103 | { |
104 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); | |
105 | struct nct7802_data *data = dev_get_drvdata(dev); | |
106 | unsigned int regval; | |
107 | int ret; | |
108 | ||
109 | if (sattr->index > 1) | |
110 | return sprintf(buf, "1\n"); | |
111 | ||
112 | ret = regmap_read(data->regmap, 0x5E, ®val); | |
113 | if (ret < 0) | |
114 | return ret; | |
115 | ||
116 | return sprintf(buf, "%u\n", !(regval & (1 << sattr->index))); | |
117 | } | |
118 | ||
4aabaf30 | 119 | static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, |
ea33597c CS |
120 | char *buf) |
121 | { | |
122 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
123 | struct nct7802_data *data = dev_get_drvdata(dev); | |
124 | unsigned int val; | |
125 | int ret; | |
126 | ||
1c6e8f6b CS |
127 | if (!attr->index) |
128 | return sprintf(buf, "255\n"); | |
129 | ||
ea33597c CS |
130 | ret = regmap_read(data->regmap, attr->index, &val); |
131 | if (ret < 0) | |
132 | return ret; | |
133 | ||
134 | return sprintf(buf, "%d\n", val); | |
135 | } | |
136 | ||
4aabaf30 | 137 | static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, |
ea33597c CS |
138 | const char *buf, size_t count) |
139 | { | |
140 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
141 | struct nct7802_data *data = dev_get_drvdata(dev); | |
142 | int err; | |
143 | u8 val; | |
144 | ||
145 | err = kstrtou8(buf, 0, &val); | |
146 | if (err < 0) | |
147 | return err; | |
148 | ||
149 | err = regmap_write(data->regmap, attr->index, val); | |
150 | return err ? : count; | |
151 | } | |
fcdc5739 | 152 | |
4aabaf30 | 153 | static ssize_t pwm_enable_show(struct device *dev, |
5102f022 CS |
154 | struct device_attribute *attr, char *buf) |
155 | { | |
156 | struct nct7802_data *data = dev_get_drvdata(dev); | |
157 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); | |
158 | unsigned int reg, enabled; | |
159 | int ret; | |
160 | ||
161 | ret = regmap_read(data->regmap, REG_SMARTFAN_EN(sattr->index), ®); | |
162 | if (ret < 0) | |
163 | return ret; | |
164 | enabled = reg >> SMARTFAN_EN_SHIFT(sattr->index) & 1; | |
165 | return sprintf(buf, "%u\n", enabled + 1); | |
166 | } | |
167 | ||
4aabaf30 | 168 | static ssize_t pwm_enable_store(struct device *dev, |
5102f022 CS |
169 | struct device_attribute *attr, |
170 | const char *buf, size_t count) | |
171 | { | |
172 | struct nct7802_data *data = dev_get_drvdata(dev); | |
173 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); | |
174 | u8 val; | |
175 | int ret; | |
176 | ||
177 | ret = kstrtou8(buf, 0, &val); | |
178 | if (ret < 0) | |
179 | return ret; | |
180 | if (val < 1 || val > 2) | |
181 | return -EINVAL; | |
182 | ret = regmap_update_bits(data->regmap, REG_SMARTFAN_EN(sattr->index), | |
183 | 1 << SMARTFAN_EN_SHIFT(sattr->index), | |
184 | (val - 1) << SMARTFAN_EN_SHIFT(sattr->index)); | |
185 | return ret ? : count; | |
186 | } | |
187 | ||
3434f378 GR |
188 | static int nct7802_read_temp(struct nct7802_data *data, |
189 | u8 reg_temp, u8 reg_temp_low, int *temp) | |
190 | { | |
191 | unsigned int t1, t2 = 0; | |
192 | int err; | |
193 | ||
194 | *temp = 0; | |
195 | ||
196 | mutex_lock(&data->access_lock); | |
197 | err = regmap_read(data->regmap, reg_temp, &t1); | |
198 | if (err < 0) | |
199 | goto abort; | |
200 | t1 <<= 8; | |
201 | if (reg_temp_low) { /* 11 bit data */ | |
202 | err = regmap_read(data->regmap, reg_temp_low, &t2); | |
203 | if (err < 0) | |
204 | goto abort; | |
205 | } | |
206 | t1 |= t2 & 0xe0; | |
207 | *temp = (s16)t1 / 32 * 125; | |
208 | abort: | |
209 | mutex_unlock(&data->access_lock); | |
210 | return err; | |
211 | } | |
212 | ||
213 | static int nct7802_read_fan(struct nct7802_data *data, u8 reg_fan) | |
214 | { | |
215 | unsigned int f1, f2; | |
216 | int ret; | |
217 | ||
218 | mutex_lock(&data->access_lock); | |
219 | ret = regmap_read(data->regmap, reg_fan, &f1); | |
220 | if (ret < 0) | |
221 | goto abort; | |
222 | ret = regmap_read(data->regmap, REG_FANCOUNT_LOW, &f2); | |
223 | if (ret < 0) | |
224 | goto abort; | |
225 | ret = (f1 << 5) | (f2 >> 3); | |
226 | /* convert fan count to rpm */ | |
227 | if (ret == 0x1fff) /* maximum value, assume fan is stopped */ | |
228 | ret = 0; | |
229 | else if (ret) | |
230 | ret = DIV_ROUND_CLOSEST(1350000U, ret); | |
231 | abort: | |
232 | mutex_unlock(&data->access_lock); | |
233 | return ret; | |
234 | } | |
235 | ||
236 | static int nct7802_read_fan_min(struct nct7802_data *data, u8 reg_fan_low, | |
237 | u8 reg_fan_high) | |
238 | { | |
239 | unsigned int f1, f2; | |
240 | int ret; | |
241 | ||
242 | mutex_lock(&data->access_lock); | |
243 | ret = regmap_read(data->regmap, reg_fan_low, &f1); | |
244 | if (ret < 0) | |
245 | goto abort; | |
246 | ret = regmap_read(data->regmap, reg_fan_high, &f2); | |
247 | if (ret < 0) | |
248 | goto abort; | |
249 | ret = f1 | ((f2 & 0xf8) << 5); | |
250 | /* convert fan count to rpm */ | |
251 | if (ret == 0x1fff) /* maximum value, assume no limit */ | |
252 | ret = 0; | |
253 | else if (ret) | |
254 | ret = DIV_ROUND_CLOSEST(1350000U, ret); | |
c0d04e91 GR |
255 | else |
256 | ret = 1350000U; | |
3434f378 GR |
257 | abort: |
258 | mutex_unlock(&data->access_lock); | |
259 | return ret; | |
260 | } | |
261 | ||
262 | static int nct7802_write_fan_min(struct nct7802_data *data, u8 reg_fan_low, | |
c0d04e91 | 263 | u8 reg_fan_high, unsigned long limit) |
3434f378 GR |
264 | { |
265 | int err; | |
266 | ||
267 | if (limit) | |
268 | limit = DIV_ROUND_CLOSEST(1350000U, limit); | |
269 | else | |
270 | limit = 0x1fff; | |
271 | limit = clamp_val(limit, 0, 0x1fff); | |
272 | ||
273 | mutex_lock(&data->access_lock); | |
274 | err = regmap_write(data->regmap, reg_fan_low, limit & 0xff); | |
275 | if (err < 0) | |
276 | goto abort; | |
277 | ||
278 | err = regmap_write(data->regmap, reg_fan_high, (limit & 0x1f00) >> 5); | |
279 | abort: | |
280 | mutex_unlock(&data->access_lock); | |
281 | return err; | |
282 | } | |
283 | ||
284 | static u8 nct7802_vmul[] = { 4, 2, 2, 2, 2 }; | |
285 | ||
286 | static int nct7802_read_voltage(struct nct7802_data *data, int nr, int index) | |
287 | { | |
288 | unsigned int v1, v2; | |
289 | int ret; | |
290 | ||
291 | mutex_lock(&data->access_lock); | |
292 | if (index == 0) { /* voltage */ | |
293 | ret = regmap_read(data->regmap, REG_VOLTAGE[nr], &v1); | |
294 | if (ret < 0) | |
295 | goto abort; | |
296 | ret = regmap_read(data->regmap, REG_VOLTAGE_LOW, &v2); | |
297 | if (ret < 0) | |
298 | goto abort; | |
299 | ret = ((v1 << 2) | (v2 >> 6)) * nct7802_vmul[nr]; | |
300 | } else { /* limit */ | |
301 | int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; | |
302 | ||
303 | ret = regmap_read(data->regmap, | |
304 | REG_VOLTAGE_LIMIT_LSB[index - 1][nr], &v1); | |
305 | if (ret < 0) | |
306 | goto abort; | |
307 | ret = regmap_read(data->regmap, REG_VOLTAGE_LIMIT_MSB[nr], | |
308 | &v2); | |
309 | if (ret < 0) | |
310 | goto abort; | |
311 | ret = (v1 | ((v2 << shift) & 0x300)) * nct7802_vmul[nr]; | |
312 | } | |
313 | abort: | |
314 | mutex_unlock(&data->access_lock); | |
315 | return ret; | |
316 | } | |
317 | ||
318 | static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index, | |
9200bc4c | 319 | unsigned long voltage) |
3434f378 GR |
320 | { |
321 | int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; | |
322 | int err; | |
323 | ||
c0d04e91 | 324 | voltage = clamp_val(voltage, 0, 0x3ff * nct7802_vmul[nr]); |
3434f378 | 325 | voltage = DIV_ROUND_CLOSEST(voltage, nct7802_vmul[nr]); |
3434f378 GR |
326 | |
327 | mutex_lock(&data->access_lock); | |
328 | err = regmap_write(data->regmap, | |
329 | REG_VOLTAGE_LIMIT_LSB[index - 1][nr], | |
330 | voltage & 0xff); | |
331 | if (err < 0) | |
332 | goto abort; | |
333 | ||
334 | err = regmap_update_bits(data->regmap, REG_VOLTAGE_LIMIT_MSB[nr], | |
335 | 0x0300 >> shift, (voltage & 0x0300) >> shift); | |
336 | abort: | |
337 | mutex_unlock(&data->access_lock); | |
338 | return err; | |
339 | } | |
340 | ||
4aabaf30 | 341 | static ssize_t in_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
342 | char *buf) |
343 | { | |
344 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
345 | struct nct7802_data *data = dev_get_drvdata(dev); | |
346 | int voltage; | |
347 | ||
348 | voltage = nct7802_read_voltage(data, sattr->nr, sattr->index); | |
349 | if (voltage < 0) | |
350 | return voltage; | |
351 | ||
352 | return sprintf(buf, "%d\n", voltage); | |
353 | } | |
354 | ||
4aabaf30 | 355 | static ssize_t in_store(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
356 | const char *buf, size_t count) |
357 | { | |
358 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
359 | struct nct7802_data *data = dev_get_drvdata(dev); | |
360 | int index = sattr->index; | |
361 | int nr = sattr->nr; | |
362 | unsigned long val; | |
363 | int err; | |
364 | ||
365 | err = kstrtoul(buf, 10, &val); | |
366 | if (err < 0) | |
367 | return err; | |
368 | ||
369 | err = nct7802_write_voltage(data, nr, index, val); | |
370 | return err ? : count; | |
371 | } | |
372 | ||
e51a7dda GB |
373 | static ssize_t in_alarm_show(struct device *dev, struct device_attribute *attr, |
374 | char *buf) | |
375 | { | |
376 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
377 | struct nct7802_data *data = dev_get_drvdata(dev); | |
378 | int volt, min, max, ret; | |
379 | unsigned int val; | |
380 | ||
381 | mutex_lock(&data->in_alarm_lock); | |
382 | ||
383 | /* | |
384 | * The SMI Voltage status register is the only register giving a status | |
385 | * for voltages. A bit is set for each input crossing a threshold, in | |
386 | * both direction, but the "inside" or "outside" limits info is not | |
387 | * available. Also this register is cleared on read. | |
388 | * Note: this is not explicitly spelled out in the datasheet, but | |
389 | * from experiment. | |
390 | * To deal with this we use a status cache with one validity bit and | |
391 | * one status bit for each input. Validity is cleared at startup and | |
392 | * each time the register reports a change, and the status is processed | |
393 | * by software based on current input value and limits. | |
394 | */ | |
395 | ret = regmap_read(data->regmap, 0x1e, &val); /* SMI Voltage status */ | |
396 | if (ret < 0) | |
397 | goto abort; | |
398 | ||
399 | /* invalidate cached status for all inputs crossing a threshold */ | |
400 | data->in_status &= ~((val & 0x0f) << 4); | |
401 | ||
402 | /* if cached status for requested input is invalid, update it */ | |
403 | if (!(data->in_status & (0x10 << sattr->index))) { | |
404 | ret = nct7802_read_voltage(data, sattr->nr, 0); | |
405 | if (ret < 0) | |
406 | goto abort; | |
407 | volt = ret; | |
408 | ||
409 | ret = nct7802_read_voltage(data, sattr->nr, 1); | |
410 | if (ret < 0) | |
411 | goto abort; | |
412 | min = ret; | |
413 | ||
414 | ret = nct7802_read_voltage(data, sattr->nr, 2); | |
415 | if (ret < 0) | |
416 | goto abort; | |
417 | max = ret; | |
418 | ||
419 | if (volt < min || volt > max) | |
420 | data->in_status |= (1 << sattr->index); | |
421 | else | |
422 | data->in_status &= ~(1 << sattr->index); | |
423 | ||
424 | data->in_status |= 0x10 << sattr->index; | |
425 | } | |
426 | ||
427 | ret = sprintf(buf, "%u\n", !!(data->in_status & (1 << sattr->index))); | |
428 | abort: | |
429 | mutex_unlock(&data->in_alarm_lock); | |
430 | return ret; | |
431 | } | |
432 | ||
4aabaf30 | 433 | static ssize_t temp_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
434 | char *buf) |
435 | { | |
436 | struct nct7802_data *data = dev_get_drvdata(dev); | |
437 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
438 | int err, temp; | |
439 | ||
440 | err = nct7802_read_temp(data, sattr->nr, sattr->index, &temp); | |
441 | if (err < 0) | |
442 | return err; | |
443 | ||
444 | return sprintf(buf, "%d\n", temp); | |
445 | } | |
446 | ||
4aabaf30 | 447 | static ssize_t temp_store(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
448 | const char *buf, size_t count) |
449 | { | |
450 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
451 | struct nct7802_data *data = dev_get_drvdata(dev); | |
452 | int nr = sattr->nr; | |
453 | long val; | |
454 | int err; | |
455 | ||
456 | err = kstrtol(buf, 10, &val); | |
457 | if (err < 0) | |
458 | return err; | |
459 | ||
c0d04e91 | 460 | val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000); |
3434f378 GR |
461 | |
462 | err = regmap_write(data->regmap, nr, val & 0xff); | |
463 | return err ? : count; | |
464 | } | |
465 | ||
4aabaf30 | 466 | static ssize_t fan_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
467 | char *buf) |
468 | { | |
469 | struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); | |
470 | struct nct7802_data *data = dev_get_drvdata(dev); | |
471 | int speed; | |
472 | ||
473 | speed = nct7802_read_fan(data, sattr->index); | |
474 | if (speed < 0) | |
475 | return speed; | |
476 | ||
477 | return sprintf(buf, "%d\n", speed); | |
478 | } | |
479 | ||
4aabaf30 | 480 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
481 | char *buf) |
482 | { | |
483 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
484 | struct nct7802_data *data = dev_get_drvdata(dev); | |
485 | int speed; | |
486 | ||
487 | speed = nct7802_read_fan_min(data, sattr->nr, sattr->index); | |
488 | if (speed < 0) | |
489 | return speed; | |
490 | ||
491 | return sprintf(buf, "%d\n", speed); | |
492 | } | |
493 | ||
4aabaf30 GR |
494 | static ssize_t fan_min_store(struct device *dev, |
495 | struct device_attribute *attr, const char *buf, | |
496 | size_t count) | |
3434f378 GR |
497 | { |
498 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
499 | struct nct7802_data *data = dev_get_drvdata(dev); | |
500 | unsigned long val; | |
501 | int err; | |
502 | ||
503 | err = kstrtoul(buf, 10, &val); | |
504 | if (err < 0) | |
505 | return err; | |
506 | ||
507 | err = nct7802_write_fan_min(data, sattr->nr, sattr->index, val); | |
508 | return err ? : count; | |
509 | } | |
510 | ||
4aabaf30 | 511 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
512 | char *buf) |
513 | { | |
514 | struct nct7802_data *data = dev_get_drvdata(dev); | |
515 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
516 | int bit = sattr->index; | |
517 | unsigned int val; | |
518 | int ret; | |
519 | ||
520 | ret = regmap_read(data->regmap, sattr->nr, &val); | |
521 | if (ret < 0) | |
522 | return ret; | |
523 | ||
524 | return sprintf(buf, "%u\n", !!(val & (1 << bit))); | |
525 | } | |
526 | ||
527 | static ssize_t | |
4aabaf30 | 528 | beep_show(struct device *dev, struct device_attribute *attr, char *buf) |
3434f378 GR |
529 | { |
530 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
531 | struct nct7802_data *data = dev_get_drvdata(dev); | |
532 | unsigned int regval; | |
533 | int err; | |
534 | ||
535 | err = regmap_read(data->regmap, sattr->nr, ®val); | |
536 | if (err) | |
537 | return err; | |
538 | ||
539 | return sprintf(buf, "%u\n", !!(regval & (1 << sattr->index))); | |
540 | } | |
541 | ||
542 | static ssize_t | |
4aabaf30 | 543 | beep_store(struct device *dev, struct device_attribute *attr, const char *buf, |
3434f378 GR |
544 | size_t count) |
545 | { | |
546 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
547 | struct nct7802_data *data = dev_get_drvdata(dev); | |
548 | unsigned long val; | |
549 | int err; | |
550 | ||
551 | err = kstrtoul(buf, 10, &val); | |
552 | if (err < 0) | |
553 | return err; | |
554 | if (val > 1) | |
555 | return -EINVAL; | |
556 | ||
557 | err = regmap_update_bits(data->regmap, sattr->nr, 1 << sattr->index, | |
558 | val ? 1 << sattr->index : 0); | |
559 | return err ? : count; | |
560 | } | |
561 | ||
4aabaf30 GR |
562 | static SENSOR_DEVICE_ATTR_RW(temp1_type, temp_type, 0); |
563 | static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0x01, REG_TEMP_LSB); | |
564 | static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, 0x31, 0); | |
565 | static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0x30, 0); | |
566 | static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 0x3a, 0); | |
567 | ||
568 | static SENSOR_DEVICE_ATTR_RW(temp2_type, temp_type, 1); | |
569 | static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 0x02, REG_TEMP_LSB); | |
570 | static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, 0x33, 0); | |
571 | static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 0x32, 0); | |
572 | static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 0x3b, 0); | |
573 | ||
574 | static SENSOR_DEVICE_ATTR_RW(temp3_type, temp_type, 2); | |
575 | static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 0x03, REG_TEMP_LSB); | |
576 | static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, 0x35, 0); | |
577 | static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 0x34, 0); | |
578 | static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 0x3c, 0); | |
579 | ||
580 | static SENSOR_DEVICE_ATTR_2_RO(temp4_input, temp, 0x04, 0); | |
581 | static SENSOR_DEVICE_ATTR_2_RW(temp4_min, temp, 0x37, 0); | |
582 | static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 0x36, 0); | |
583 | static SENSOR_DEVICE_ATTR_2_RW(temp4_crit, temp, 0x3d, 0); | |
584 | ||
585 | static SENSOR_DEVICE_ATTR_2_RO(temp5_input, temp, 0x06, REG_TEMP_PECI_LSB); | |
586 | static SENSOR_DEVICE_ATTR_2_RW(temp5_min, temp, 0x39, 0); | |
587 | static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 0x38, 0); | |
588 | static SENSOR_DEVICE_ATTR_2_RW(temp5_crit, temp, 0x3e, 0); | |
589 | ||
590 | static SENSOR_DEVICE_ATTR_2_RO(temp6_input, temp, 0x07, REG_TEMP_PECI_LSB); | |
591 | ||
592 | static SENSOR_DEVICE_ATTR_2_RO(temp1_min_alarm, alarm, 0x18, 0); | |
593 | static SENSOR_DEVICE_ATTR_2_RO(temp2_min_alarm, alarm, 0x18, 1); | |
594 | static SENSOR_DEVICE_ATTR_2_RO(temp3_min_alarm, alarm, 0x18, 2); | |
595 | static SENSOR_DEVICE_ATTR_2_RO(temp4_min_alarm, alarm, 0x18, 3); | |
596 | static SENSOR_DEVICE_ATTR_2_RO(temp5_min_alarm, alarm, 0x18, 4); | |
597 | ||
598 | static SENSOR_DEVICE_ATTR_2_RO(temp1_max_alarm, alarm, 0x19, 0); | |
599 | static SENSOR_DEVICE_ATTR_2_RO(temp2_max_alarm, alarm, 0x19, 1); | |
600 | static SENSOR_DEVICE_ATTR_2_RO(temp3_max_alarm, alarm, 0x19, 2); | |
601 | static SENSOR_DEVICE_ATTR_2_RO(temp4_max_alarm, alarm, 0x19, 3); | |
602 | static SENSOR_DEVICE_ATTR_2_RO(temp5_max_alarm, alarm, 0x19, 4); | |
603 | ||
604 | static SENSOR_DEVICE_ATTR_2_RO(temp1_crit_alarm, alarm, 0x1b, 0); | |
605 | static SENSOR_DEVICE_ATTR_2_RO(temp2_crit_alarm, alarm, 0x1b, 1); | |
606 | static SENSOR_DEVICE_ATTR_2_RO(temp3_crit_alarm, alarm, 0x1b, 2); | |
607 | static SENSOR_DEVICE_ATTR_2_RO(temp4_crit_alarm, alarm, 0x1b, 3); | |
608 | static SENSOR_DEVICE_ATTR_2_RO(temp5_crit_alarm, alarm, 0x1b, 4); | |
609 | ||
610 | static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, alarm, 0x17, 0); | |
611 | static SENSOR_DEVICE_ATTR_2_RO(temp2_fault, alarm, 0x17, 1); | |
612 | static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, alarm, 0x17, 2); | |
613 | ||
614 | static SENSOR_DEVICE_ATTR_2_RW(temp1_beep, beep, 0x5c, 0); | |
615 | static SENSOR_DEVICE_ATTR_2_RW(temp2_beep, beep, 0x5c, 1); | |
616 | static SENSOR_DEVICE_ATTR_2_RW(temp3_beep, beep, 0x5c, 2); | |
617 | static SENSOR_DEVICE_ATTR_2_RW(temp4_beep, beep, 0x5c, 3); | |
618 | static SENSOR_DEVICE_ATTR_2_RW(temp5_beep, beep, 0x5c, 4); | |
619 | static SENSOR_DEVICE_ATTR_2_RW(temp6_beep, beep, 0x5c, 5); | |
3434f378 GR |
620 | |
621 | static struct attribute *nct7802_temp_attrs[] = { | |
fcdc5739 | 622 | &sensor_dev_attr_temp1_type.dev_attr.attr, |
3434f378 GR |
623 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
624 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
625 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
626 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
627 | &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, | |
628 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
629 | &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, | |
630 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
631 | &sensor_dev_attr_temp1_beep.dev_attr.attr, | |
632 | ||
fcdc5739 CS |
633 | &sensor_dev_attr_temp2_type.dev_attr.attr, /* 10 */ |
634 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
3434f378 GR |
635 | &sensor_dev_attr_temp2_min.dev_attr.attr, |
636 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
637 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
638 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, | |
639 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
640 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
641 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
642 | &sensor_dev_attr_temp2_beep.dev_attr.attr, | |
643 | ||
fcdc5739 CS |
644 | &sensor_dev_attr_temp3_type.dev_attr.attr, /* 20 */ |
645 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
3434f378 GR |
646 | &sensor_dev_attr_temp3_min.dev_attr.attr, |
647 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
648 | &sensor_dev_attr_temp3_crit.dev_attr.attr, | |
649 | &sensor_dev_attr_temp3_min_alarm.dev_attr.attr, | |
650 | &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, | |
651 | &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, | |
652 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
653 | &sensor_dev_attr_temp3_beep.dev_attr.attr, | |
654 | ||
fcdc5739 | 655 | &sensor_dev_attr_temp4_input.dev_attr.attr, /* 30 */ |
3434f378 GR |
656 | &sensor_dev_attr_temp4_min.dev_attr.attr, |
657 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
658 | &sensor_dev_attr_temp4_crit.dev_attr.attr, | |
659 | &sensor_dev_attr_temp4_min_alarm.dev_attr.attr, | |
660 | &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, | |
661 | &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr, | |
662 | &sensor_dev_attr_temp4_beep.dev_attr.attr, | |
663 | ||
fcdc5739 | 664 | &sensor_dev_attr_temp5_input.dev_attr.attr, /* 38 */ |
3434f378 GR |
665 | &sensor_dev_attr_temp5_min.dev_attr.attr, |
666 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
667 | &sensor_dev_attr_temp5_crit.dev_attr.attr, | |
668 | &sensor_dev_attr_temp5_min_alarm.dev_attr.attr, | |
669 | &sensor_dev_attr_temp5_max_alarm.dev_attr.attr, | |
670 | &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr, | |
671 | &sensor_dev_attr_temp5_beep.dev_attr.attr, | |
672 | ||
fcdc5739 | 673 | &sensor_dev_attr_temp6_input.dev_attr.attr, /* 46 */ |
3434f378 GR |
674 | &sensor_dev_attr_temp6_beep.dev_attr.attr, |
675 | ||
676 | NULL | |
677 | }; | |
678 | ||
679 | static umode_t nct7802_temp_is_visible(struct kobject *kobj, | |
680 | struct attribute *attr, int index) | |
681 | { | |
d06f9e6c | 682 | struct device *dev = kobj_to_dev(kobj); |
3434f378 GR |
683 | struct nct7802_data *data = dev_get_drvdata(dev); |
684 | unsigned int reg; | |
685 | int err; | |
686 | ||
687 | err = regmap_read(data->regmap, REG_MODE, ®); | |
688 | if (err < 0) | |
689 | return 0; | |
690 | ||
fcdc5739 | 691 | if (index < 10 && |
3434f378 GR |
692 | (reg & 03) != 0x01 && (reg & 0x03) != 0x02) /* RD1 */ |
693 | return 0; | |
fcdc5739 CS |
694 | |
695 | if (index >= 10 && index < 20 && | |
3434f378 GR |
696 | (reg & 0x0c) != 0x04 && (reg & 0x0c) != 0x08) /* RD2 */ |
697 | return 0; | |
fcdc5739 | 698 | if (index >= 20 && index < 30 && (reg & 0x30) != 0x20) /* RD3 */ |
3434f378 | 699 | return 0; |
fcdc5739 CS |
700 | |
701 | if (index >= 30 && index < 38) /* local */ | |
3434f378 GR |
702 | return attr->mode; |
703 | ||
704 | err = regmap_read(data->regmap, REG_PECI_ENABLE, ®); | |
705 | if (err < 0) | |
706 | return 0; | |
707 | ||
fcdc5739 | 708 | if (index >= 38 && index < 46 && !(reg & 0x01)) /* PECI 0 */ |
3434f378 GR |
709 | return 0; |
710 | ||
fcdc5739 | 711 | if (index >= 0x46 && (!(reg & 0x02))) /* PECI 1 */ |
3434f378 GR |
712 | return 0; |
713 | ||
714 | return attr->mode; | |
715 | } | |
716 | ||
afc680f3 | 717 | static const struct attribute_group nct7802_temp_group = { |
3434f378 GR |
718 | .attrs = nct7802_temp_attrs, |
719 | .is_visible = nct7802_temp_is_visible, | |
720 | }; | |
721 | ||
4aabaf30 GR |
722 | static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, 0, 0); |
723 | static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, 0, 1); | |
724 | static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, 0, 2); | |
e51a7dda | 725 | static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, in_alarm, 0, 3); |
4aabaf30 GR |
726 | static SENSOR_DEVICE_ATTR_2_RW(in0_beep, beep, 0x5a, 3); |
727 | ||
728 | static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, 1, 0); | |
729 | ||
730 | static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, 2, 0); | |
731 | static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, 2, 1); | |
732 | static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, 2, 2); | |
e51a7dda | 733 | static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, in_alarm, 2, 0); |
4aabaf30 GR |
734 | static SENSOR_DEVICE_ATTR_2_RW(in2_beep, beep, 0x5a, 0); |
735 | ||
736 | static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, 3, 0); | |
737 | static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, 3, 1); | |
738 | static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, 3, 2); | |
e51a7dda | 739 | static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, in_alarm, 3, 1); |
4aabaf30 GR |
740 | static SENSOR_DEVICE_ATTR_2_RW(in3_beep, beep, 0x5a, 1); |
741 | ||
742 | static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, 4, 0); | |
743 | static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, 4, 1); | |
744 | static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, 4, 2); | |
e51a7dda | 745 | static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, in_alarm, 4, 2); |
4aabaf30 | 746 | static SENSOR_DEVICE_ATTR_2_RW(in4_beep, beep, 0x5a, 2); |
3434f378 GR |
747 | |
748 | static struct attribute *nct7802_in_attrs[] = { | |
749 | &sensor_dev_attr_in0_input.dev_attr.attr, | |
750 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
751 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
752 | &sensor_dev_attr_in0_alarm.dev_attr.attr, | |
753 | &sensor_dev_attr_in0_beep.dev_attr.attr, | |
754 | ||
755 | &sensor_dev_attr_in1_input.dev_attr.attr, /* 5 */ | |
756 | ||
757 | &sensor_dev_attr_in2_input.dev_attr.attr, /* 6 */ | |
758 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
759 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
760 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
761 | &sensor_dev_attr_in2_beep.dev_attr.attr, | |
762 | ||
763 | &sensor_dev_attr_in3_input.dev_attr.attr, /* 11 */ | |
764 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
765 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
766 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
767 | &sensor_dev_attr_in3_beep.dev_attr.attr, | |
768 | ||
38ada2f4 | 769 | &sensor_dev_attr_in4_input.dev_attr.attr, /* 16 */ |
3434f378 GR |
770 | &sensor_dev_attr_in4_min.dev_attr.attr, |
771 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
772 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
773 | &sensor_dev_attr_in4_beep.dev_attr.attr, | |
774 | ||
775 | NULL, | |
776 | }; | |
777 | ||
778 | static umode_t nct7802_in_is_visible(struct kobject *kobj, | |
779 | struct attribute *attr, int index) | |
780 | { | |
d06f9e6c | 781 | struct device *dev = kobj_to_dev(kobj); |
3434f378 GR |
782 | struct nct7802_data *data = dev_get_drvdata(dev); |
783 | unsigned int reg; | |
784 | int err; | |
785 | ||
786 | if (index < 6) /* VCC, VCORE */ | |
787 | return attr->mode; | |
788 | ||
789 | err = regmap_read(data->regmap, REG_MODE, ®); | |
790 | if (err < 0) | |
791 | return 0; | |
792 | ||
793 | if (index >= 6 && index < 11 && (reg & 0x03) != 0x03) /* VSEN1 */ | |
794 | return 0; | |
38ada2f4 | 795 | if (index >= 11 && index < 16 && (reg & 0x0c) != 0x0c) /* VSEN2 */ |
3434f378 | 796 | return 0; |
38ada2f4 | 797 | if (index >= 16 && (reg & 0x30) != 0x30) /* VSEN3 */ |
3434f378 GR |
798 | return 0; |
799 | ||
800 | return attr->mode; | |
801 | } | |
802 | ||
afc680f3 | 803 | static const struct attribute_group nct7802_in_group = { |
3434f378 GR |
804 | .attrs = nct7802_in_attrs, |
805 | .is_visible = nct7802_in_is_visible, | |
806 | }; | |
807 | ||
4aabaf30 GR |
808 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0x10); |
809 | static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan_min, 0x49, 0x4c); | |
810 | static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, alarm, 0x1a, 0); | |
811 | static SENSOR_DEVICE_ATTR_2_RW(fan1_beep, beep, 0x5b, 0); | |
812 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 0x11); | |
813 | static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan_min, 0x4a, 0x4d); | |
814 | static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, alarm, 0x1a, 1); | |
815 | static SENSOR_DEVICE_ATTR_2_RW(fan2_beep, beep, 0x5b, 1); | |
816 | static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 0x12); | |
817 | static SENSOR_DEVICE_ATTR_2_RW(fan3_min, fan_min, 0x4b, 0x4e); | |
818 | static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, alarm, 0x1a, 2); | |
819 | static SENSOR_DEVICE_ATTR_2_RW(fan3_beep, beep, 0x5b, 2); | |
3434f378 | 820 | |
876420e0 | 821 | /* 7.2.89 Fan Control Output Type */ |
4aabaf30 GR |
822 | static SENSOR_DEVICE_ATTR_RO(pwm1_mode, pwm_mode, 0); |
823 | static SENSOR_DEVICE_ATTR_RO(pwm2_mode, pwm_mode, 1); | |
824 | static SENSOR_DEVICE_ATTR_RO(pwm3_mode, pwm_mode, 2); | |
876420e0 | 825 | |
ea33597c | 826 | /* 7.2.91... Fan Control Output Value */ |
4aabaf30 GR |
827 | static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, REG_PWM(0)); |
828 | static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, REG_PWM(1)); | |
829 | static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, REG_PWM(2)); | |
ea33597c | 830 | |
5102f022 | 831 | /* 7.2.95... Temperature to Fan mapping Relationships Register */ |
4aabaf30 GR |
832 | static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0); |
833 | static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1); | |
834 | static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2); | |
5102f022 | 835 | |
3434f378 GR |
836 | static struct attribute *nct7802_fan_attrs[] = { |
837 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
838 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
839 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
840 | &sensor_dev_attr_fan1_beep.dev_attr.attr, | |
841 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
842 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
843 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
844 | &sensor_dev_attr_fan2_beep.dev_attr.attr, | |
845 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
846 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
847 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
848 | &sensor_dev_attr_fan3_beep.dev_attr.attr, | |
849 | ||
850 | NULL | |
851 | }; | |
852 | ||
853 | static umode_t nct7802_fan_is_visible(struct kobject *kobj, | |
854 | struct attribute *attr, int index) | |
855 | { | |
d06f9e6c | 856 | struct device *dev = kobj_to_dev(kobj); |
3434f378 GR |
857 | struct nct7802_data *data = dev_get_drvdata(dev); |
858 | int fan = index / 4; /* 4 attributes per fan */ | |
859 | unsigned int reg; | |
860 | int err; | |
861 | ||
862 | err = regmap_read(data->regmap, REG_FAN_ENABLE, ®); | |
863 | if (err < 0 || !(reg & (1 << fan))) | |
864 | return 0; | |
865 | ||
866 | return attr->mode; | |
867 | } | |
868 | ||
afc680f3 | 869 | static const struct attribute_group nct7802_fan_group = { |
3434f378 GR |
870 | .attrs = nct7802_fan_attrs, |
871 | .is_visible = nct7802_fan_is_visible, | |
872 | }; | |
873 | ||
ea33597c | 874 | static struct attribute *nct7802_pwm_attrs[] = { |
5102f022 | 875 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
876420e0 | 876 | &sensor_dev_attr_pwm1_mode.dev_attr.attr, |
ea33597c | 877 | &sensor_dev_attr_pwm1.dev_attr.attr, |
5102f022 | 878 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
876420e0 | 879 | &sensor_dev_attr_pwm2_mode.dev_attr.attr, |
ea33597c | 880 | &sensor_dev_attr_pwm2.dev_attr.attr, |
5102f022 | 881 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
876420e0 | 882 | &sensor_dev_attr_pwm3_mode.dev_attr.attr, |
ea33597c CS |
883 | &sensor_dev_attr_pwm3.dev_attr.attr, |
884 | NULL | |
885 | }; | |
886 | ||
afc680f3 | 887 | static const struct attribute_group nct7802_pwm_group = { |
ea33597c CS |
888 | .attrs = nct7802_pwm_attrs, |
889 | }; | |
890 | ||
1c6e8f6b | 891 | /* 7.2.115... 0x80-0x83, 0x84 Temperature (X-axis) transition */ |
4aabaf30 GR |
892 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_temp, temp, 0x80, 0); |
893 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_temp, temp, 0x81, 0); | |
894 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_temp, temp, 0x82, 0); | |
895 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_temp, temp, 0x83, 0); | |
896 | static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_temp, temp, 0x84, 0); | |
1c6e8f6b CS |
897 | |
898 | /* 7.2.120... 0x85-0x88 PWM (Y-axis) transition */ | |
4aabaf30 GR |
899 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point1_pwm, pwm, 0x85); |
900 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_pwm, pwm, 0x86); | |
901 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point3_pwm, pwm, 0x87); | |
902 | static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point4_pwm, pwm, 0x88); | |
903 | static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point5_pwm, pwm, 0); | |
1c6e8f6b CS |
904 | |
905 | /* 7.2.124 Table 2 X-axis Transition Point 1 Register */ | |
4aabaf30 GR |
906 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_temp, temp, 0x90, 0); |
907 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_temp, temp, 0x91, 0); | |
908 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_temp, temp, 0x92, 0); | |
909 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_temp, temp, 0x93, 0); | |
910 | static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_temp, temp, 0x94, 0); | |
1c6e8f6b CS |
911 | |
912 | /* 7.2.129 Table 2 Y-axis Transition Point 1 Register */ | |
4aabaf30 GR |
913 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point1_pwm, pwm, 0x95); |
914 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point2_pwm, pwm, 0x96); | |
915 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point3_pwm, pwm, 0x97); | |
916 | static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point4_pwm, pwm, 0x98); | |
917 | static SENSOR_DEVICE_ATTR_RO(pwm2_auto_point5_pwm, pwm, 0); | |
1c6e8f6b CS |
918 | |
919 | /* 7.2.133 Table 3 X-axis Transition Point 1 Register */ | |
4aabaf30 GR |
920 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_temp, temp, 0xA0, 0); |
921 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_temp, temp, 0xA1, 0); | |
922 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point3_temp, temp, 0xA2, 0); | |
923 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point4_temp, temp, 0xA3, 0); | |
924 | static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point5_temp, temp, 0xA4, 0); | |
1c6e8f6b CS |
925 | |
926 | /* 7.2.138 Table 3 Y-axis Transition Point 1 Register */ | |
4aabaf30 GR |
927 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point1_pwm, pwm, 0xA5); |
928 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point2_pwm, pwm, 0xA6); | |
929 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point3_pwm, pwm, 0xA7); | |
930 | static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point4_pwm, pwm, 0xA8); | |
931 | static SENSOR_DEVICE_ATTR_RO(pwm3_auto_point5_pwm, pwm, 0); | |
1c6e8f6b CS |
932 | |
933 | static struct attribute *nct7802_auto_point_attrs[] = { | |
934 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, | |
935 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, | |
936 | &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, | |
937 | &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, | |
938 | &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, | |
939 | ||
940 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, | |
941 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
942 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
943 | &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, | |
944 | &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, | |
945 | ||
946 | &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, | |
947 | &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, | |
948 | &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, | |
949 | &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, | |
950 | &sensor_dev_attr_pwm2_auto_point5_temp.dev_attr.attr, | |
951 | ||
952 | &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, | |
953 | &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, | |
954 | &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, | |
955 | &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, | |
956 | &sensor_dev_attr_pwm2_auto_point5_pwm.dev_attr.attr, | |
957 | ||
958 | &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, | |
959 | &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, | |
960 | &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, | |
961 | &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, | |
962 | &sensor_dev_attr_pwm3_auto_point5_temp.dev_attr.attr, | |
963 | ||
964 | &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, | |
965 | &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, | |
966 | &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, | |
967 | &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, | |
968 | &sensor_dev_attr_pwm3_auto_point5_pwm.dev_attr.attr, | |
969 | ||
970 | NULL | |
971 | }; | |
972 | ||
afc680f3 | 973 | static const struct attribute_group nct7802_auto_point_group = { |
1c6e8f6b CS |
974 | .attrs = nct7802_auto_point_attrs, |
975 | }; | |
976 | ||
3434f378 GR |
977 | static const struct attribute_group *nct7802_groups[] = { |
978 | &nct7802_temp_group, | |
979 | &nct7802_in_group, | |
980 | &nct7802_fan_group, | |
ea33597c | 981 | &nct7802_pwm_group, |
1c6e8f6b | 982 | &nct7802_auto_point_group, |
3434f378 GR |
983 | NULL |
984 | }; | |
985 | ||
986 | static int nct7802_detect(struct i2c_client *client, | |
987 | struct i2c_board_info *info) | |
988 | { | |
989 | int reg; | |
990 | ||
991 | /* | |
992 | * Chip identification registers are only available in bank 0, | |
993 | * so only attempt chip detection if bank 0 is selected | |
994 | */ | |
995 | reg = i2c_smbus_read_byte_data(client, REG_BANK); | |
996 | if (reg != 0x00) | |
997 | return -ENODEV; | |
998 | ||
999 | reg = i2c_smbus_read_byte_data(client, REG_VENDOR_ID); | |
1000 | if (reg != 0x50) | |
1001 | return -ENODEV; | |
1002 | ||
1003 | reg = i2c_smbus_read_byte_data(client, REG_CHIP_ID); | |
1004 | if (reg != 0xc3) | |
1005 | return -ENODEV; | |
1006 | ||
1007 | reg = i2c_smbus_read_byte_data(client, REG_VERSION_ID); | |
1008 | if (reg < 0 || (reg & 0xf0) != 0x20) | |
1009 | return -ENODEV; | |
1010 | ||
1011 | /* Also validate lower bits of voltage and temperature registers */ | |
1012 | reg = i2c_smbus_read_byte_data(client, REG_TEMP_LSB); | |
1013 | if (reg < 0 || (reg & 0x1f)) | |
1014 | return -ENODEV; | |
1015 | ||
1016 | reg = i2c_smbus_read_byte_data(client, REG_TEMP_PECI_LSB); | |
1017 | if (reg < 0 || (reg & 0x3f)) | |
1018 | return -ENODEV; | |
1019 | ||
1020 | reg = i2c_smbus_read_byte_data(client, REG_VOLTAGE_LOW); | |
1021 | if (reg < 0 || (reg & 0x3f)) | |
1022 | return -ENODEV; | |
1023 | ||
1024 | strlcpy(info->type, "nct7802", I2C_NAME_SIZE); | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | static bool nct7802_regmap_is_volatile(struct device *dev, unsigned int reg) | |
1029 | { | |
1c6e8f6b CS |
1030 | return (reg != REG_BANK && reg <= 0x20) || |
1031 | (reg >= REG_PWM(0) && reg <= REG_PWM(2)); | |
3434f378 GR |
1032 | } |
1033 | ||
3c535bca | 1034 | static const struct regmap_config nct7802_regmap_config = { |
3434f378 GR |
1035 | .reg_bits = 8, |
1036 | .val_bits = 8, | |
1037 | .cache_type = REGCACHE_RBTREE, | |
1038 | .volatile_reg = nct7802_regmap_is_volatile, | |
1039 | }; | |
1040 | ||
1041 | static int nct7802_init_chip(struct nct7802_data *data) | |
1042 | { | |
1043 | int err; | |
1044 | ||
1045 | /* Enable ADC */ | |
1046 | err = regmap_update_bits(data->regmap, REG_START, 0x01, 0x01); | |
1047 | if (err) | |
1048 | return err; | |
1049 | ||
1050 | /* Enable local temperature sensor */ | |
1051 | err = regmap_update_bits(data->regmap, REG_MODE, 0x40, 0x40); | |
1052 | if (err) | |
1053 | return err; | |
1054 | ||
1055 | /* Enable Vcore and VCC voltage monitoring */ | |
1056 | return regmap_update_bits(data->regmap, REG_VMON_ENABLE, 0x03, 0x03); | |
1057 | } | |
1058 | ||
67487038 | 1059 | static int nct7802_probe(struct i2c_client *client) |
3434f378 GR |
1060 | { |
1061 | struct device *dev = &client->dev; | |
1062 | struct nct7802_data *data; | |
1063 | struct device *hwmon_dev; | |
1064 | int ret; | |
1065 | ||
1066 | data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); | |
1067 | if (data == NULL) | |
1068 | return -ENOMEM; | |
1069 | ||
1070 | data->regmap = devm_regmap_init_i2c(client, &nct7802_regmap_config); | |
1071 | if (IS_ERR(data->regmap)) | |
1072 | return PTR_ERR(data->regmap); | |
1073 | ||
1074 | mutex_init(&data->access_lock); | |
e51a7dda | 1075 | mutex_init(&data->in_alarm_lock); |
3434f378 GR |
1076 | |
1077 | ret = nct7802_init_chip(data); | |
1078 | if (ret < 0) | |
1079 | return ret; | |
1080 | ||
1081 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, | |
1082 | data, | |
1083 | nct7802_groups); | |
1084 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
1085 | } | |
1086 | ||
1087 | static const unsigned short nct7802_address_list[] = { | |
1088 | 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END | |
1089 | }; | |
1090 | ||
1091 | static const struct i2c_device_id nct7802_idtable[] = { | |
1092 | { "nct7802", 0 }, | |
1093 | { } | |
1094 | }; | |
1095 | MODULE_DEVICE_TABLE(i2c, nct7802_idtable); | |
1096 | ||
1097 | static struct i2c_driver nct7802_driver = { | |
1098 | .class = I2C_CLASS_HWMON, | |
1099 | .driver = { | |
1100 | .name = DRVNAME, | |
1101 | }, | |
1102 | .detect = nct7802_detect, | |
67487038 | 1103 | .probe_new = nct7802_probe, |
3434f378 GR |
1104 | .id_table = nct7802_idtable, |
1105 | .address_list = nct7802_address_list, | |
1106 | }; | |
1107 | ||
1108 | module_i2c_driver(nct7802_driver); | |
1109 | ||
1110 | MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>"); | |
1111 | MODULE_DESCRIPTION("NCT7802Y Hardware Monitoring Driver"); | |
1112 | MODULE_LICENSE("GPL v2"); |