Commit | Line | Data |
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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 | ||
0e346a86 OS |
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 | ||
3434f378 GR |
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 */ | |
e51a7dda GB |
78 | u8 in_status; |
79 | struct mutex in_alarm_lock; | |
3434f378 GR |
80 | }; |
81 | ||
4aabaf30 GR |
82 | static ssize_t temp_type_show(struct device *dev, |
83 | struct device_attribute *attr, char *buf) | |
fcdc5739 CS |
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(data->regmap, REG_MODE, &mode); | |
91 | if (ret < 0) | |
92 | return ret; | |
93 | ||
94 | return sprintf(buf, "%u\n", (mode >> (2 * sattr->index) & 3) + 2); | |
95 | } | |
96 | ||
4aabaf30 GR |
97 | static ssize_t temp_type_store(struct device *dev, |
98 | struct device_attribute *attr, const char *buf, | |
99 | size_t count) | |
fcdc5739 CS |
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(buf, 0, &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(data->regmap, REG_MODE, | |
114 | 3 << 2 * sattr->index, (type - 2) << 2 * sattr->index); | |
115 | return err ? : count; | |
116 | } | |
117 | ||
4aabaf30 GR |
118 | static ssize_t pwm_mode_show(struct device *dev, |
119 | struct device_attribute *attr, char *buf) | |
876420e0 CS |
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, "1\n"); | |
128 | ||
129 | ret = regmap_read(data->regmap, 0x5E, ®val); | |
130 | if (ret < 0) | |
131 | return ret; | |
132 | ||
133 | return sprintf(buf, "%u\n", !(regval & (1 << sattr->index))); | |
134 | } | |
135 | ||
4aabaf30 | 136 | static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, |
ea33597c CS |
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 | ||
1c6e8f6b CS |
144 | if (!attr->index) |
145 | return sprintf(buf, "255\n"); | |
146 | ||
ea33597c CS |
147 | ret = regmap_read(data->regmap, attr->index, &val); |
148 | if (ret < 0) | |
149 | return ret; | |
150 | ||
151 | return sprintf(buf, "%d\n", val); | |
152 | } | |
153 | ||
4aabaf30 | 154 | static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, |
ea33597c CS |
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(buf, 0, &val); | |
163 | if (err < 0) | |
164 | return err; | |
165 | ||
166 | err = regmap_write(data->regmap, attr->index, val); | |
167 | return err ? : count; | |
168 | } | |
fcdc5739 | 169 | |
4aabaf30 | 170 | static ssize_t pwm_enable_show(struct device *dev, |
5102f022 CS |
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(data->regmap, REG_SMARTFAN_EN(sattr->index), ®); | |
179 | if (ret < 0) | |
180 | return ret; | |
181 | enabled = reg >> SMARTFAN_EN_SHIFT(sattr->index) & 1; | |
182 | return sprintf(buf, "%u\n", enabled + 1); | |
183 | } | |
184 | ||
4aabaf30 | 185 | static ssize_t pwm_enable_store(struct device *dev, |
5102f022 CS |
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(buf, 0, &val); | |
195 | if (ret < 0) | |
196 | return ret; | |
197 | if (val < 1 || val > 2) | |
198 | return -EINVAL; | |
199 | ret = regmap_update_bits(data->regmap, REG_SMARTFAN_EN(sattr->index), | |
200 | 1 << SMARTFAN_EN_SHIFT(sattr->index), | |
201 | (val - 1) << SMARTFAN_EN_SHIFT(sattr->index)); | |
202 | return ret ? : count; | |
203 | } | |
204 | ||
3434f378 GR |
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(data->regmap, reg_temp, &t1); | |
215 | if (err < 0) | |
216 | goto abort; | |
217 | t1 <<= 8; | |
218 | if (reg_temp_low) { /* 11 bit data */ | |
219 | err = regmap_read(data->regmap, reg_temp_low, &t2); | |
220 | if (err < 0) | |
221 | goto abort; | |
222 | } | |
223 | t1 |= t2 & 0xe0; | |
224 | *temp = (s16)t1 / 32 * 125; | |
225 | abort: | |
226 | mutex_unlock(&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(data->regmap, reg_fan, &f1); | |
237 | if (ret < 0) | |
238 | goto abort; | |
239 | ret = regmap_read(data->regmap, REG_FANCOUNT_LOW, &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(&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(data->regmap, reg_fan_low, &f1); | |
261 | if (ret < 0) | |
262 | goto abort; | |
263 | ret = regmap_read(data->regmap, reg_fan_high, &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); | |
c0d04e91 GR |
272 | else |
273 | ret = 1350000U; | |
3434f378 GR |
274 | abort: |
275 | mutex_unlock(&data->access_lock); | |
276 | return ret; | |
277 | } | |
278 | ||
279 | static int nct7802_write_fan_min(struct nct7802_data *data, u8 reg_fan_low, | |
c0d04e91 | 280 | u8 reg_fan_high, unsigned long limit) |
3434f378 GR |
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(data->regmap, reg_fan_low, limit & 0xff); | |
292 | if (err < 0) | |
293 | goto abort; | |
294 | ||
295 | err = regmap_write(data->regmap, reg_fan_high, (limit & 0x1f00) >> 5); | |
296 | abort: | |
297 | mutex_unlock(&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(data->regmap, REG_VOLTAGE[nr], &v1); | |
311 | if (ret < 0) | |
312 | goto abort; | |
313 | ret = regmap_read(data->regmap, REG_VOLTAGE_LOW, &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(data->regmap, | |
321 | REG_VOLTAGE_LIMIT_LSB[index - 1][nr], &v1); | |
322 | if (ret < 0) | |
323 | goto abort; | |
324 | ret = regmap_read(data->regmap, REG_VOLTAGE_LIMIT_MSB[nr], | |
325 | &v2); | |
326 | if (ret < 0) | |
327 | goto abort; | |
328 | ret = (v1 | ((v2 << shift) & 0x300)) * nct7802_vmul[nr]; | |
329 | } | |
330 | abort: | |
331 | mutex_unlock(&data->access_lock); | |
332 | return ret; | |
333 | } | |
334 | ||
335 | static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index, | |
9200bc4c | 336 | unsigned long voltage) |
3434f378 GR |
337 | { |
338 | int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; | |
339 | int err; | |
340 | ||
c0d04e91 | 341 | voltage = clamp_val(voltage, 0, 0x3ff * nct7802_vmul[nr]); |
3434f378 | 342 | voltage = DIV_ROUND_CLOSEST(voltage, nct7802_vmul[nr]); |
3434f378 GR |
343 | |
344 | mutex_lock(&data->access_lock); | |
345 | err = regmap_write(data->regmap, | |
346 | REG_VOLTAGE_LIMIT_LSB[index - 1][nr], | |
347 | voltage & 0xff); | |
348 | if (err < 0) | |
349 | goto abort; | |
350 | ||
351 | err = regmap_update_bits(data->regmap, REG_VOLTAGE_LIMIT_MSB[nr], | |
352 | 0x0300 >> shift, (voltage & 0x0300) >> shift); | |
353 | abort: | |
354 | mutex_unlock(&data->access_lock); | |
355 | return err; | |
356 | } | |
357 | ||
4aabaf30 | 358 | static ssize_t in_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
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, sattr->nr, sattr->index); | |
366 | if (voltage < 0) | |
367 | return voltage; | |
368 | ||
369 | return sprintf(buf, "%d\n", voltage); | |
370 | } | |
371 | ||
4aabaf30 | 372 | static ssize_t in_store(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
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(buf, 10, &val); | |
383 | if (err < 0) | |
384 | return err; | |
385 | ||
386 | err = nct7802_write_voltage(data, nr, index, val); | |
387 | return err ? : count; | |
388 | } | |
389 | ||
e51a7dda GB |
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(data->regmap, 0x1e, &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, sattr->nr, 0); | |
422 | if (ret < 0) | |
423 | goto abort; | |
424 | volt = ret; | |
425 | ||
426 | ret = nct7802_read_voltage(data, sattr->nr, 1); | |
427 | if (ret < 0) | |
428 | goto abort; | |
429 | min = ret; | |
430 | ||
431 | ret = nct7802_read_voltage(data, sattr->nr, 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, "%u\n", !!(data->in_status & (1 << sattr->index))); | |
445 | abort: | |
446 | mutex_unlock(&data->in_alarm_lock); | |
447 | return ret; | |
448 | } | |
449 | ||
4aabaf30 | 450 | static ssize_t temp_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
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, sattr->nr, sattr->index, &temp); | |
458 | if (err < 0) | |
459 | return err; | |
460 | ||
461 | return sprintf(buf, "%d\n", temp); | |
462 | } | |
463 | ||
4aabaf30 | 464 | static ssize_t temp_store(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
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(buf, 10, &val); | |
474 | if (err < 0) | |
475 | return err; | |
476 | ||
c0d04e91 | 477 | val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000); |
3434f378 GR |
478 | |
479 | err = regmap_write(data->regmap, nr, val & 0xff); | |
480 | return err ? : count; | |
481 | } | |
482 | ||
4aabaf30 | 483 | static ssize_t fan_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
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, sattr->index); | |
491 | if (speed < 0) | |
492 | return speed; | |
493 | ||
494 | return sprintf(buf, "%d\n", speed); | |
495 | } | |
496 | ||
4aabaf30 | 497 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
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, sattr->nr, sattr->index); | |
505 | if (speed < 0) | |
506 | return speed; | |
507 | ||
508 | return sprintf(buf, "%d\n", speed); | |
509 | } | |
510 | ||
4aabaf30 GR |
511 | static ssize_t fan_min_store(struct device *dev, |
512 | struct device_attribute *attr, const char *buf, | |
513 | size_t count) | |
3434f378 GR |
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(buf, 10, &val); | |
521 | if (err < 0) | |
522 | return err; | |
523 | ||
524 | err = nct7802_write_fan_min(data, sattr->nr, sattr->index, val); | |
525 | return err ? : count; | |
526 | } | |
527 | ||
4aabaf30 | 528 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
3434f378 GR |
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(data->regmap, sattr->nr, &val); | |
538 | if (ret < 0) | |
539 | return ret; | |
540 | ||
541 | return sprintf(buf, "%u\n", !!(val & (1 << bit))); | |
542 | } | |
543 | ||
544 | static ssize_t | |
4aabaf30 | 545 | beep_show(struct device *dev, struct device_attribute *attr, char *buf) |
3434f378 GR |
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(data->regmap, sattr->nr, ®val); | |
553 | if (err) | |
554 | return err; | |
555 | ||
556 | return sprintf(buf, "%u\n", !!(regval & (1 << sattr->index))); | |
557 | } | |
558 | ||
559 | static ssize_t | |
4aabaf30 | 560 | beep_store(struct device *dev, struct device_attribute *attr, const char *buf, |
3434f378 GR |
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(buf, 10, &val); | |
569 | if (err < 0) | |
570 | return err; | |
571 | if (val > 1) | |
572 | return -EINVAL; | |
573 | ||
574 | err = regmap_update_bits(data->regmap, sattr->nr, 1 << sattr->index, | |
575 | val ? 1 << sattr->index : 0); | |
576 | return err ? : count; | |
577 | } | |
578 | ||
4aabaf30 GR |
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); | |
3434f378 GR |
637 | |
638 | static struct attribute *nct7802_temp_attrs[] = { | |
fcdc5739 | 639 | &sensor_dev_attr_temp1_type.dev_attr.attr, |
3434f378 GR |
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 | ||
fcdc5739 CS |
650 | &sensor_dev_attr_temp2_type.dev_attr.attr, /* 10 */ |
651 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
3434f378 GR |
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 | ||
fcdc5739 CS |
661 | &sensor_dev_attr_temp3_type.dev_attr.attr, /* 20 */ |
662 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
3434f378 GR |
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 | ||
fcdc5739 | 672 | &sensor_dev_attr_temp4_input.dev_attr.attr, /* 30 */ |
3434f378 GR |
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 | ||
fcdc5739 | 681 | &sensor_dev_attr_temp5_input.dev_attr.attr, /* 38 */ |
3434f378 GR |
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 | ||
fcdc5739 | 690 | &sensor_dev_attr_temp6_input.dev_attr.attr, /* 46 */ |
3434f378 GR |
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 | { | |
d06f9e6c | 699 | struct device *dev = kobj_to_dev(kobj); |
3434f378 GR |
700 | struct nct7802_data *data = dev_get_drvdata(dev); |
701 | unsigned int reg; | |
702 | int err; | |
703 | ||
704 | err = regmap_read(data->regmap, REG_MODE, ®); | |
705 | if (err < 0) | |
706 | return 0; | |
707 | ||
fcdc5739 | 708 | if (index < 10 && |
3434f378 GR |
709 | (reg & 03) != 0x01 && (reg & 0x03) != 0x02) /* RD1 */ |
710 | return 0; | |
fcdc5739 CS |
711 | |
712 | if (index >= 10 && index < 20 && | |
3434f378 GR |
713 | (reg & 0x0c) != 0x04 && (reg & 0x0c) != 0x08) /* RD2 */ |
714 | return 0; | |
fcdc5739 | 715 | if (index >= 20 && index < 30 && (reg & 0x30) != 0x20) /* RD3 */ |
3434f378 | 716 | return 0; |
fcdc5739 CS |
717 | |
718 | if (index >= 30 && index < 38) /* local */ | |
3434f378 GR |
719 | return attr->mode; |
720 | ||
721 | err = regmap_read(data->regmap, REG_PECI_ENABLE, ®); | |
722 | if (err < 0) | |
723 | return 0; | |
724 | ||
fcdc5739 | 725 | if (index >= 38 && index < 46 && !(reg & 0x01)) /* PECI 0 */ |
3434f378 GR |
726 | return 0; |
727 | ||
fcdc5739 | 728 | if (index >= 0x46 && (!(reg & 0x02))) /* PECI 1 */ |
3434f378 GR |
729 | return 0; |
730 | ||
731 | return attr->mode; | |
732 | } | |
733 | ||
afc680f3 | 734 | static const struct attribute_group nct7802_temp_group = { |
3434f378 GR |
735 | .attrs = nct7802_temp_attrs, |
736 | .is_visible = nct7802_temp_is_visible, | |
737 | }; | |
738 | ||
4aabaf30 GR |
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); | |
e51a7dda | 742 | static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, in_alarm, 0, 3); |
4aabaf30 GR |
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); | |
e51a7dda | 750 | static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, in_alarm, 2, 0); |
4aabaf30 GR |
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); | |
e51a7dda | 756 | static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, in_alarm, 3, 1); |
4aabaf30 GR |
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); | |
e51a7dda | 762 | static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, in_alarm, 4, 2); |
4aabaf30 | 763 | static SENSOR_DEVICE_ATTR_2_RW(in4_beep, beep, 0x5a, 2); |
3434f378 GR |
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 | ||
38ada2f4 | 786 | &sensor_dev_attr_in4_input.dev_attr.attr, /* 16 */ |
3434f378 GR |
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 | { | |
d06f9e6c | 798 | struct device *dev = kobj_to_dev(kobj); |
3434f378 GR |
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(data->regmap, REG_MODE, ®); | |
807 | if (err < 0) | |
808 | return 0; | |
809 | ||
810 | if (index >= 6 && index < 11 && (reg & 0x03) != 0x03) /* VSEN1 */ | |
811 | return 0; | |
38ada2f4 | 812 | if (index >= 11 && index < 16 && (reg & 0x0c) != 0x0c) /* VSEN2 */ |
3434f378 | 813 | return 0; |
38ada2f4 | 814 | if (index >= 16 && (reg & 0x30) != 0x30) /* VSEN3 */ |
3434f378 GR |
815 | return 0; |
816 | ||
817 | return attr->mode; | |
818 | } | |
819 | ||
afc680f3 | 820 | static const struct attribute_group nct7802_in_group = { |
3434f378 GR |
821 | .attrs = nct7802_in_attrs, |
822 | .is_visible = nct7802_in_is_visible, | |
823 | }; | |
824 | ||
4aabaf30 GR |
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); | |
3434f378 | 837 | |
876420e0 | 838 | /* 7.2.89 Fan Control Output Type */ |
4aabaf30 GR |
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); | |
876420e0 | 842 | |
ea33597c | 843 | /* 7.2.91... Fan Control Output Value */ |
4aabaf30 GR |
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)); | |
ea33597c | 847 | |
5102f022 | 848 | /* 7.2.95... Temperature to Fan mapping Relationships Register */ |
4aabaf30 GR |
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); | |
5102f022 | 852 | |
3434f378 GR |
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 | { | |
d06f9e6c | 873 | struct device *dev = kobj_to_dev(kobj); |
3434f378 GR |
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(data->regmap, REG_FAN_ENABLE, ®); | |
880 | if (err < 0 || !(reg & (1 << fan))) | |
881 | return 0; | |
882 | ||
883 | return attr->mode; | |
884 | } | |
885 | ||
afc680f3 | 886 | static const struct attribute_group nct7802_fan_group = { |
3434f378 GR |
887 | .attrs = nct7802_fan_attrs, |
888 | .is_visible = nct7802_fan_is_visible, | |
889 | }; | |
890 | ||
ea33597c | 891 | static struct attribute *nct7802_pwm_attrs[] = { |
5102f022 | 892 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
876420e0 | 893 | &sensor_dev_attr_pwm1_mode.dev_attr.attr, |
ea33597c | 894 | &sensor_dev_attr_pwm1.dev_attr.attr, |
5102f022 | 895 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
876420e0 | 896 | &sensor_dev_attr_pwm2_mode.dev_attr.attr, |
ea33597c | 897 | &sensor_dev_attr_pwm2.dev_attr.attr, |
5102f022 | 898 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
876420e0 | 899 | &sensor_dev_attr_pwm3_mode.dev_attr.attr, |
ea33597c CS |
900 | &sensor_dev_attr_pwm3.dev_attr.attr, |
901 | NULL | |
902 | }; | |
903 | ||
afc680f3 | 904 | static const struct attribute_group nct7802_pwm_group = { |
ea33597c CS |
905 | .attrs = nct7802_pwm_attrs, |
906 | }; | |
907 | ||
1c6e8f6b | 908 | /* 7.2.115... 0x80-0x83, 0x84 Temperature (X-axis) transition */ |
4aabaf30 GR |
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); | |
1c6e8f6b CS |
914 | |
915 | /* 7.2.120... 0x85-0x88 PWM (Y-axis) transition */ | |
4aabaf30 GR |
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); | |
1c6e8f6b CS |
921 | |
922 | /* 7.2.124 Table 2 X-axis Transition Point 1 Register */ | |
4aabaf30 GR |
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); | |
1c6e8f6b CS |
928 | |
929 | /* 7.2.129 Table 2 Y-axis Transition Point 1 Register */ | |
4aabaf30 GR |
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); | |
1c6e8f6b CS |
935 | |
936 | /* 7.2.133 Table 3 X-axis Transition Point 1 Register */ | |
4aabaf30 GR |
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); | |
1c6e8f6b CS |
942 | |
943 | /* 7.2.138 Table 3 Y-axis Transition Point 1 Register */ | |
4aabaf30 GR |
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); | |
1c6e8f6b CS |
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 | ||
afc680f3 | 990 | static const struct attribute_group nct7802_auto_point_group = { |
1c6e8f6b CS |
991 | .attrs = nct7802_auto_point_attrs, |
992 | }; | |
993 | ||
3434f378 GR |
994 | static const struct attribute_group *nct7802_groups[] = { |
995 | &nct7802_temp_group, | |
996 | &nct7802_in_group, | |
997 | &nct7802_fan_group, | |
ea33597c | 998 | &nct7802_pwm_group, |
1c6e8f6b | 999 | &nct7802_auto_point_group, |
3434f378 GR |
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 | ||
f2f394db | 1041 | strscpy(info->type, "nct7802", I2C_NAME_SIZE); |
3434f378 GR |
1042 | return 0; |
1043 | } | |
1044 | ||
1045 | static bool nct7802_regmap_is_volatile(struct device *dev, unsigned int reg) | |
1046 | { | |
1c6e8f6b CS |
1047 | return (reg != REG_BANK && reg <= 0x20) || |
1048 | (reg >= REG_PWM(0) && reg <= REG_PWM(2)); | |
3434f378 GR |
1049 | } |
1050 | ||
3c535bca | 1051 | static const struct regmap_config nct7802_regmap_config = { |
3434f378 GR |
1052 | .reg_bits = 8, |
1053 | .val_bits = 8, | |
1054 | .cache_type = REGCACHE_RBTREE, | |
1055 | .volatile_reg = nct7802_regmap_is_volatile, | |
1056 | }; | |
1057 | ||
0e346a86 OS |
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(node, "reg", ®)) { | |
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(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(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(node, "sensor-type", &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(node, "temperature-mode", | |
1121 | &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, | |
1154 | &mode_val); | |
10f0d2ab WJ |
1155 | if (err) { |
1156 | of_node_put(node); | |
0e346a86 | 1157 | return err; |
10f0d2ab | 1158 | } |
0e346a86 OS |
1159 | } |
1160 | } | |
1161 | ||
1162 | return regmap_update_bits(data->regmap, REG_MODE, mode_mask, mode_val); | |
1163 | } | |
1164 | ||
1165 | static int nct7802_init_chip(struct device *dev, struct nct7802_data *data) | |
3434f378 GR |
1166 | { |
1167 | int err; | |
1168 | ||
1169 | /* Enable ADC */ | |
1170 | err = regmap_update_bits(data->regmap, REG_START, 0x01, 0x01); | |
1171 | if (err) | |
1172 | return err; | |
1173 | ||
0e346a86 | 1174 | err = nct7802_configure_channels(dev, data); |
3434f378 GR |
1175 | if (err) |
1176 | return err; | |
1177 | ||
1178 | /* Enable Vcore and VCC voltage monitoring */ | |
1179 | return regmap_update_bits(data->regmap, REG_VMON_ENABLE, 0x03, 0x03); | |
1180 | } | |
1181 | ||
67487038 | 1182 | static int nct7802_probe(struct i2c_client *client) |
3434f378 GR |
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, 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(data->regmap)) | |
1195 | return PTR_ERR(data->regmap); | |
1196 | ||
1197 | mutex_init(&data->access_lock); | |
e51a7dda | 1198 | mutex_init(&data->in_alarm_lock); |
3434f378 | 1199 | |
0e346a86 | 1200 | ret = nct7802_init_chip(dev, data); |
3434f378 GR |
1201 | if (ret < 0) |
1202 | return ret; | |
1203 | ||
1204 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, | |
1205 | data, | |
1206 | nct7802_groups); | |
1207 | return PTR_ERR_OR_ZERO(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, | |
1975d167 | 1226 | .probe = nct7802_probe, |
3434f378 GR |
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"); |