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1/*
2 * Copyright 2010 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24
25#ifdef CONFIG_ACPI
26#include <linux/acpi.h>
27#endif
28#include <linux/power_supply.h>
29#include <linux/hwmon.h>
30#include <linux/hwmon-sysfs.h>
31
32#include <drm/drmP.h>
33
34#include "nouveau_drm.h"
35#include "nouveau_hwmon.h"
36
37#include <nvkm/subdev/iccsense.h>
38#include <nvkm/subdev/volt.h>
39
40#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
41static ssize_t
42nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
43{
44 struct drm_device *dev = dev_get_drvdata(d);
45 struct nouveau_drm *drm = nouveau_drm(dev);
46 struct nvkm_therm *therm = nvxx_therm(&drm->device);
47 int temp = nvkm_therm_temp_get(therm);
48
49 if (temp < 0)
50 return temp;
51
52 return snprintf(buf, PAGE_SIZE, "%d\n", temp * 1000);
53}
54static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
55 NULL, 0);
56
57static ssize_t
58nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d,
59 struct device_attribute *a, char *buf)
60{
61 return snprintf(buf, PAGE_SIZE, "%d\n", 100);
62}
63static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO,
64 nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0);
65
66static ssize_t
67nouveau_hwmon_temp1_auto_point1_temp(struct device *d,
68 struct device_attribute *a, char *buf)
69{
70 struct drm_device *dev = dev_get_drvdata(d);
71 struct nouveau_drm *drm = nouveau_drm(dev);
72 struct nvkm_therm *therm = nvxx_therm(&drm->device);
73
74 return snprintf(buf, PAGE_SIZE, "%d\n",
75 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000);
76}
77static ssize_t
78nouveau_hwmon_set_temp1_auto_point1_temp(struct device *d,
79 struct device_attribute *a,
80 const char *buf, size_t count)
81{
82 struct drm_device *dev = dev_get_drvdata(d);
83 struct nouveau_drm *drm = nouveau_drm(dev);
84 struct nvkm_therm *therm = nvxx_therm(&drm->device);
85 long value;
86
87 if (kstrtol(buf, 10, &value) == -EINVAL)
88 return count;
89
90 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST,
91 value / 1000);
92
93 return count;
94}
95static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
96 nouveau_hwmon_temp1_auto_point1_temp,
97 nouveau_hwmon_set_temp1_auto_point1_temp, 0);
98
99static ssize_t
100nouveau_hwmon_temp1_auto_point1_temp_hyst(struct device *d,
101 struct device_attribute *a, char *buf)
102{
103 struct drm_device *dev = dev_get_drvdata(d);
104 struct nouveau_drm *drm = nouveau_drm(dev);
105 struct nvkm_therm *therm = nvxx_therm(&drm->device);
106
107 return snprintf(buf, PAGE_SIZE, "%d\n",
108 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000);
109}
110static ssize_t
111nouveau_hwmon_set_temp1_auto_point1_temp_hyst(struct device *d,
112 struct device_attribute *a,
113 const char *buf, size_t count)
114{
115 struct drm_device *dev = dev_get_drvdata(d);
116 struct nouveau_drm *drm = nouveau_drm(dev);
117 struct nvkm_therm *therm = nvxx_therm(&drm->device);
118 long value;
119
120 if (kstrtol(buf, 10, &value) == -EINVAL)
121 return count;
122
123 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST,
124 value / 1000);
125
126 return count;
127}
128static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
129 nouveau_hwmon_temp1_auto_point1_temp_hyst,
130 nouveau_hwmon_set_temp1_auto_point1_temp_hyst, 0);
131
132static ssize_t
133nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
134{
135 struct drm_device *dev = dev_get_drvdata(d);
136 struct nouveau_drm *drm = nouveau_drm(dev);
137 struct nvkm_therm *therm = nvxx_therm(&drm->device);
138
139 return snprintf(buf, PAGE_SIZE, "%d\n",
140 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK) * 1000);
141}
142static ssize_t
143nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
144 const char *buf, size_t count)
145{
146 struct drm_device *dev = dev_get_drvdata(d);
147 struct nouveau_drm *drm = nouveau_drm(dev);
148 struct nvkm_therm *therm = nvxx_therm(&drm->device);
149 long value;
150
151 if (kstrtol(buf, 10, &value) == -EINVAL)
152 return count;
153
154 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK, value / 1000);
155
156 return count;
157}
158static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
159 nouveau_hwmon_set_max_temp,
160 0);
161
162static ssize_t
163nouveau_hwmon_max_temp_hyst(struct device *d, struct device_attribute *a,
164 char *buf)
165{
166 struct drm_device *dev = dev_get_drvdata(d);
167 struct nouveau_drm *drm = nouveau_drm(dev);
168 struct nvkm_therm *therm = nvxx_therm(&drm->device);
169
170 return snprintf(buf, PAGE_SIZE, "%d\n",
171 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST) * 1000);
172}
173static ssize_t
174nouveau_hwmon_set_max_temp_hyst(struct device *d, struct device_attribute *a,
175 const char *buf, size_t count)
176{
177 struct drm_device *dev = dev_get_drvdata(d);
178 struct nouveau_drm *drm = nouveau_drm(dev);
179 struct nvkm_therm *therm = nvxx_therm(&drm->device);
180 long value;
181
182 if (kstrtol(buf, 10, &value) == -EINVAL)
183 return count;
184
185 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST,
186 value / 1000);
187
188 return count;
189}
190static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
191 nouveau_hwmon_max_temp_hyst,
192 nouveau_hwmon_set_max_temp_hyst, 0);
193
194static ssize_t
195nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
196 char *buf)
197{
198 struct drm_device *dev = dev_get_drvdata(d);
199 struct nouveau_drm *drm = nouveau_drm(dev);
200 struct nvkm_therm *therm = nvxx_therm(&drm->device);
201
202 return snprintf(buf, PAGE_SIZE, "%d\n",
203 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL) * 1000);
204}
205static ssize_t
206nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
207 const char *buf,
208 size_t count)
209{
210 struct drm_device *dev = dev_get_drvdata(d);
211 struct nouveau_drm *drm = nouveau_drm(dev);
212 struct nvkm_therm *therm = nvxx_therm(&drm->device);
213 long value;
214
215 if (kstrtol(buf, 10, &value) == -EINVAL)
216 return count;
217
218 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL, value / 1000);
219
220 return count;
221}
222static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
223 nouveau_hwmon_critical_temp,
224 nouveau_hwmon_set_critical_temp,
225 0);
226
227static ssize_t
228nouveau_hwmon_critical_temp_hyst(struct device *d, struct device_attribute *a,
229 char *buf)
230{
231 struct drm_device *dev = dev_get_drvdata(d);
232 struct nouveau_drm *drm = nouveau_drm(dev);
233 struct nvkm_therm *therm = nvxx_therm(&drm->device);
234
235 return snprintf(buf, PAGE_SIZE, "%d\n",
236 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST) * 1000);
237}
238static ssize_t
239nouveau_hwmon_set_critical_temp_hyst(struct device *d,
240 struct device_attribute *a,
241 const char *buf,
242 size_t count)
243{
244 struct drm_device *dev = dev_get_drvdata(d);
245 struct nouveau_drm *drm = nouveau_drm(dev);
246 struct nvkm_therm *therm = nvxx_therm(&drm->device);
247 long value;
248
249 if (kstrtol(buf, 10, &value) == -EINVAL)
250 return count;
251
252 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST,
253 value / 1000);
254
255 return count;
256}
257static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO | S_IWUSR,
258 nouveau_hwmon_critical_temp_hyst,
259 nouveau_hwmon_set_critical_temp_hyst, 0);
260static ssize_t
261nouveau_hwmon_emergency_temp(struct device *d, struct device_attribute *a,
262 char *buf)
263{
264 struct drm_device *dev = dev_get_drvdata(d);
265 struct nouveau_drm *drm = nouveau_drm(dev);
266 struct nvkm_therm *therm = nvxx_therm(&drm->device);
267
268 return snprintf(buf, PAGE_SIZE, "%d\n",
269 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN) * 1000);
270}
271static ssize_t
272nouveau_hwmon_set_emergency_temp(struct device *d, struct device_attribute *a,
273 const char *buf,
274 size_t count)
275{
276 struct drm_device *dev = dev_get_drvdata(d);
277 struct nouveau_drm *drm = nouveau_drm(dev);
278 struct nvkm_therm *therm = nvxx_therm(&drm->device);
279 long value;
280
281 if (kstrtol(buf, 10, &value) == -EINVAL)
282 return count;
283
284 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN, value / 1000);
285
286 return count;
287}
288static SENSOR_DEVICE_ATTR(temp1_emergency, S_IRUGO | S_IWUSR,
289 nouveau_hwmon_emergency_temp,
290 nouveau_hwmon_set_emergency_temp,
291 0);
292
293static ssize_t
294nouveau_hwmon_emergency_temp_hyst(struct device *d, struct device_attribute *a,
295 char *buf)
296{
297 struct drm_device *dev = dev_get_drvdata(d);
298 struct nouveau_drm *drm = nouveau_drm(dev);
299 struct nvkm_therm *therm = nvxx_therm(&drm->device);
300
301 return snprintf(buf, PAGE_SIZE, "%d\n",
302 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST) * 1000);
303}
304static ssize_t
305nouveau_hwmon_set_emergency_temp_hyst(struct device *d,
306 struct device_attribute *a,
307 const char *buf,
308 size_t count)
309{
310 struct drm_device *dev = dev_get_drvdata(d);
311 struct nouveau_drm *drm = nouveau_drm(dev);
312 struct nvkm_therm *therm = nvxx_therm(&drm->device);
313 long value;
314
315 if (kstrtol(buf, 10, &value) == -EINVAL)
316 return count;
317
318 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST,
319 value / 1000);
320
321 return count;
322}
323static SENSOR_DEVICE_ATTR(temp1_emergency_hyst, S_IRUGO | S_IWUSR,
324 nouveau_hwmon_emergency_temp_hyst,
325 nouveau_hwmon_set_emergency_temp_hyst,
326 0);
327
328static ssize_t nouveau_hwmon_show_name(struct device *dev,
329 struct device_attribute *attr,
330 char *buf)
331{
332 return sprintf(buf, "nouveau\n");
333}
334static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
335
336static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
337 struct device_attribute *attr,
338 char *buf)
339{
340 return sprintf(buf, "1000\n");
341}
342static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
343 nouveau_hwmon_show_update_rate,
344 NULL, 0);
345
346static ssize_t
347nouveau_hwmon_show_fan1_input(struct device *d, struct device_attribute *attr,
348 char *buf)
349{
350 struct drm_device *dev = dev_get_drvdata(d);
351 struct nouveau_drm *drm = nouveau_drm(dev);
352 struct nvkm_therm *therm = nvxx_therm(&drm->device);
353
354 return snprintf(buf, PAGE_SIZE, "%d\n", nvkm_therm_fan_sense(therm));
355}
356static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, nouveau_hwmon_show_fan1_input,
357 NULL, 0);
358
359 static ssize_t
360nouveau_hwmon_get_pwm1_enable(struct device *d,
361 struct device_attribute *a, char *buf)
362{
363 struct drm_device *dev = dev_get_drvdata(d);
364 struct nouveau_drm *drm = nouveau_drm(dev);
365 struct nvkm_therm *therm = nvxx_therm(&drm->device);
366 int ret;
367
368 ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MODE);
369 if (ret < 0)
370 return ret;
371
372 return sprintf(buf, "%i\n", ret);
373}
374
375static ssize_t
376nouveau_hwmon_set_pwm1_enable(struct device *d, struct device_attribute *a,
377 const char *buf, size_t count)
378{
379 struct drm_device *dev = dev_get_drvdata(d);
380 struct nouveau_drm *drm = nouveau_drm(dev);
381 struct nvkm_therm *therm = nvxx_therm(&drm->device);
382 long value;
383 int ret;
384
385 ret = kstrtol(buf, 10, &value);
386 if (ret)
387 return ret;
388
389 ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MODE, value);
390 if (ret)
391 return ret;
392 else
393 return count;
394}
395static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
396 nouveau_hwmon_get_pwm1_enable,
397 nouveau_hwmon_set_pwm1_enable, 0);
398
399static ssize_t
400nouveau_hwmon_get_pwm1(struct device *d, struct device_attribute *a, char *buf)
401{
402 struct drm_device *dev = dev_get_drvdata(d);
403 struct nouveau_drm *drm = nouveau_drm(dev);
404 struct nvkm_therm *therm = nvxx_therm(&drm->device);
405 int ret;
406
407 ret = therm->fan_get(therm);
408 if (ret < 0)
409 return ret;
410
411 return sprintf(buf, "%i\n", ret);
412}
413
414static ssize_t
415nouveau_hwmon_set_pwm1(struct device *d, struct device_attribute *a,
416 const char *buf, size_t count)
417{
418 struct drm_device *dev = dev_get_drvdata(d);
419 struct nouveau_drm *drm = nouveau_drm(dev);
420 struct nvkm_therm *therm = nvxx_therm(&drm->device);
421 int ret = -ENODEV;
422 long value;
423
424 if (kstrtol(buf, 10, &value) == -EINVAL)
425 return -EINVAL;
426
427 ret = therm->fan_set(therm, value);
428 if (ret)
429 return ret;
430
431 return count;
432}
433
434static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR,
435 nouveau_hwmon_get_pwm1,
436 nouveau_hwmon_set_pwm1, 0);
437
438static ssize_t
439nouveau_hwmon_get_pwm1_min(struct device *d,
440 struct device_attribute *a, char *buf)
441{
442 struct drm_device *dev = dev_get_drvdata(d);
443 struct nouveau_drm *drm = nouveau_drm(dev);
444 struct nvkm_therm *therm = nvxx_therm(&drm->device);
445 int ret;
446
447 ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY);
448 if (ret < 0)
449 return ret;
450
451 return sprintf(buf, "%i\n", ret);
452}
453
454static ssize_t
455nouveau_hwmon_set_pwm1_min(struct device *d, struct device_attribute *a,
456 const char *buf, size_t count)
457{
458 struct drm_device *dev = dev_get_drvdata(d);
459 struct nouveau_drm *drm = nouveau_drm(dev);
460 struct nvkm_therm *therm = nvxx_therm(&drm->device);
461 long value;
462 int ret;
463
464 if (kstrtol(buf, 10, &value) == -EINVAL)
465 return -EINVAL;
466
467 ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY, value);
468 if (ret < 0)
469 return ret;
470
471 return count;
472}
473
474static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO | S_IWUSR,
475 nouveau_hwmon_get_pwm1_min,
476 nouveau_hwmon_set_pwm1_min, 0);
477
478static ssize_t
479nouveau_hwmon_get_pwm1_max(struct device *d,
480 struct device_attribute *a, char *buf)
481{
482 struct drm_device *dev = dev_get_drvdata(d);
483 struct nouveau_drm *drm = nouveau_drm(dev);
484 struct nvkm_therm *therm = nvxx_therm(&drm->device);
485 int ret;
486
487 ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY);
488 if (ret < 0)
489 return ret;
490
491 return sprintf(buf, "%i\n", ret);
492}
493
494static ssize_t
495nouveau_hwmon_set_pwm1_max(struct device *d, struct device_attribute *a,
496 const char *buf, size_t count)
497{
498 struct drm_device *dev = dev_get_drvdata(d);
499 struct nouveau_drm *drm = nouveau_drm(dev);
500 struct nvkm_therm *therm = nvxx_therm(&drm->device);
501 long value;
502 int ret;
503
504 if (kstrtol(buf, 10, &value) == -EINVAL)
505 return -EINVAL;
506
507 ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY, value);
508 if (ret < 0)
509 return ret;
510
511 return count;
512}
513
514static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO | S_IWUSR,
515 nouveau_hwmon_get_pwm1_max,
516 nouveau_hwmon_set_pwm1_max, 0);
517
518static ssize_t
519nouveau_hwmon_get_in0_input(struct device *d,
520 struct device_attribute *a, char *buf)
521{
522 struct drm_device *dev = dev_get_drvdata(d);
523 struct nouveau_drm *drm = nouveau_drm(dev);
524 struct nvkm_volt *volt = nvxx_volt(&drm->device);
525 int ret;
526
527 ret = nvkm_volt_get(volt);
528 if (ret < 0)
529 return ret;
530
531 return sprintf(buf, "%i\n", ret / 1000);
532}
533
534static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO,
535 nouveau_hwmon_get_in0_input, NULL, 0);
536
537static ssize_t
538nouveau_hwmon_get_in0_label(struct device *d,
539 struct device_attribute *a, char *buf)
540{
541 return sprintf(buf, "GPU core\n");
542}
543
544static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO,
545 nouveau_hwmon_get_in0_label, NULL, 0);
546
547static ssize_t
548nouveau_hwmon_get_power1_input(struct device *d, struct device_attribute *a,
549 char *buf)
550{
551 struct drm_device *dev = dev_get_drvdata(d);
552 struct nouveau_drm *drm = nouveau_drm(dev);
553 struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->device);
554 int result = nvkm_iccsense_read_all(iccsense);
555
556 if (result < 0)
557 return result;
558
559 return sprintf(buf, "%i\n", result);
560}
561
562static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO,
563 nouveau_hwmon_get_power1_input, NULL, 0);
564
565static struct attribute *hwmon_default_attributes[] = {
566 &sensor_dev_attr_name.dev_attr.attr,
567 &sensor_dev_attr_update_rate.dev_attr.attr,
568 NULL
569};
570static struct attribute *hwmon_temp_attributes[] = {
571 &sensor_dev_attr_temp1_input.dev_attr.attr,
572 &sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr,
573 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
574 &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
575 &sensor_dev_attr_temp1_max.dev_attr.attr,
576 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
577 &sensor_dev_attr_temp1_crit.dev_attr.attr,
578 &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
579 &sensor_dev_attr_temp1_emergency.dev_attr.attr,
580 &sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr,
581 NULL
582};
583static struct attribute *hwmon_fan_rpm_attributes[] = {
584 &sensor_dev_attr_fan1_input.dev_attr.attr,
585 NULL
586};
587static struct attribute *hwmon_pwm_fan_attributes[] = {
588 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
589 &sensor_dev_attr_pwm1.dev_attr.attr,
590 &sensor_dev_attr_pwm1_min.dev_attr.attr,
591 &sensor_dev_attr_pwm1_max.dev_attr.attr,
592 NULL
593};
594
595static struct attribute *hwmon_in0_attributes[] = {
596 &sensor_dev_attr_in0_input.dev_attr.attr,
597 &sensor_dev_attr_in0_label.dev_attr.attr,
598 NULL
599};
600
601static struct attribute *hwmon_power_attributes[] = {
602 &sensor_dev_attr_power1_input.dev_attr.attr,
603 NULL
604};
605
606static const struct attribute_group hwmon_default_attrgroup = {
607 .attrs = hwmon_default_attributes,
608};
609static const struct attribute_group hwmon_temp_attrgroup = {
610 .attrs = hwmon_temp_attributes,
611};
612static const struct attribute_group hwmon_fan_rpm_attrgroup = {
613 .attrs = hwmon_fan_rpm_attributes,
614};
615static const struct attribute_group hwmon_pwm_fan_attrgroup = {
616 .attrs = hwmon_pwm_fan_attributes,
617};
618static const struct attribute_group hwmon_in0_attrgroup = {
619 .attrs = hwmon_in0_attributes,
620};
621static const struct attribute_group hwmon_power_attrgroup = {
622 .attrs = hwmon_power_attributes,
623};
624#endif
625
626int
627nouveau_hwmon_init(struct drm_device *dev)
628{
629#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
630 struct nouveau_drm *drm = nouveau_drm(dev);
631 struct nvkm_therm *therm = nvxx_therm(&drm->device);
632 struct nvkm_volt *volt = nvxx_volt(&drm->device);
633 struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->device);
634 struct nouveau_hwmon *hwmon;
635 struct device *hwmon_dev;
636 int ret = 0;
637
638 hwmon = drm->hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL);
639 if (!hwmon)
640 return -ENOMEM;
641 hwmon->dev = dev;
642
643 hwmon_dev = hwmon_device_register(dev->dev);
644 if (IS_ERR(hwmon_dev)) {
645 ret = PTR_ERR(hwmon_dev);
646 NV_ERROR(drm, "Unable to register hwmon device: %d\n", ret);
647 return ret;
648 }
649 dev_set_drvdata(hwmon_dev, dev);
650
651 /* set the default attributes */
652 ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_default_attrgroup);
653 if (ret)
654 goto error;
655
656 if (therm && therm->attr_get && therm->attr_set) {
657 /* if the card has a working thermal sensor */
658 if (nvkm_therm_temp_get(therm) >= 0) {
659 ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_temp_attrgroup);
660 if (ret)
661 goto error;
662 }
663
664 /* if the card has a pwm fan */
665 /*XXX: incorrect, need better detection for this, some boards have
666 * the gpio entries for pwm fan control even when there's no
667 * actual fan connected to it... therm table? */
668 if (therm->fan_get && therm->fan_get(therm) >= 0) {
669 ret = sysfs_create_group(&hwmon_dev->kobj,
670 &hwmon_pwm_fan_attrgroup);
671 if (ret)
672 goto error;
673 }
674 }
675
676 /* if the card can read the fan rpm */
677 if (therm && nvkm_therm_fan_sense(therm) >= 0) {
678 ret = sysfs_create_group(&hwmon_dev->kobj,
679 &hwmon_fan_rpm_attrgroup);
680 if (ret)
681 goto error;
682 }
683
684 if (volt && nvkm_volt_get(volt) >= 0) {
685 ret = sysfs_create_group(&hwmon_dev->kobj,
686 &hwmon_in0_attrgroup);
687
688 if (ret)
689 goto error;
690 }
691
692 if (iccsense && iccsense->data_valid && iccsense->rail_count) {
693 ret = sysfs_create_group(&hwmon_dev->kobj,
694 &hwmon_power_attrgroup);
695 if (ret)
696 goto error;
697 }
698
699 hwmon->hwmon = hwmon_dev;
700
701 return 0;
702
703error:
704 NV_ERROR(drm, "Unable to create some hwmon sysfs files: %d\n", ret);
705 hwmon_device_unregister(hwmon_dev);
706 hwmon->hwmon = NULL;
707 return ret;
708#else
709 return 0;
710#endif
711}
712
713void
714nouveau_hwmon_fini(struct drm_device *dev)
715{
716#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
717 struct nouveau_hwmon *hwmon = nouveau_hwmon(dev);
718
719 if (hwmon->hwmon) {
720 sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_default_attrgroup);
721 sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_temp_attrgroup);
722 sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_pwm_fan_attrgroup);
723 sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_fan_rpm_attrgroup);
724 sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_in0_attrgroup);
725 sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_power_attrgroup);
726
727 hwmon_device_unregister(hwmon->hwmon);
728 }
729
730 nouveau_drm(dev)->hwmon = NULL;
731 kfree(hwmon);
732#endif
733}
1/*
2 * Copyright 2010 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24
25#ifdef CONFIG_ACPI
26#include <linux/acpi.h>
27#endif
28#include <linux/power_supply.h>
29#include <linux/hwmon.h>
30#include <linux/hwmon-sysfs.h>
31
32#include "nouveau_drv.h"
33#include "nouveau_hwmon.h"
34
35#include <nvkm/subdev/iccsense.h>
36#include <nvkm/subdev/volt.h>
37
38#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
39
40static ssize_t
41nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d,
42 struct device_attribute *a, char *buf)
43{
44 return sysfs_emit(buf, "%d\n", 100);
45}
46static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, 0444,
47 nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0);
48
49static ssize_t
50nouveau_hwmon_temp1_auto_point1_temp(struct device *d,
51 struct device_attribute *a, char *buf)
52{
53 struct drm_device *dev = dev_get_drvdata(d);
54 struct nouveau_drm *drm = nouveau_drm(dev);
55 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
56
57 return sysfs_emit(buf, "%d\n",
58 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000);
59}
60static ssize_t
61nouveau_hwmon_set_temp1_auto_point1_temp(struct device *d,
62 struct device_attribute *a,
63 const char *buf, size_t count)
64{
65 struct drm_device *dev = dev_get_drvdata(d);
66 struct nouveau_drm *drm = nouveau_drm(dev);
67 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
68 long value;
69
70 if (kstrtol(buf, 10, &value))
71 return -EINVAL;
72
73 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST,
74 value / 1000);
75
76 return count;
77}
78static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, 0644,
79 nouveau_hwmon_temp1_auto_point1_temp,
80 nouveau_hwmon_set_temp1_auto_point1_temp, 0);
81
82static ssize_t
83nouveau_hwmon_temp1_auto_point1_temp_hyst(struct device *d,
84 struct device_attribute *a, char *buf)
85{
86 struct drm_device *dev = dev_get_drvdata(d);
87 struct nouveau_drm *drm = nouveau_drm(dev);
88 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
89
90 return sysfs_emit(buf, "%d\n",
91 therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000);
92}
93static ssize_t
94nouveau_hwmon_set_temp1_auto_point1_temp_hyst(struct device *d,
95 struct device_attribute *a,
96 const char *buf, size_t count)
97{
98 struct drm_device *dev = dev_get_drvdata(d);
99 struct nouveau_drm *drm = nouveau_drm(dev);
100 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
101 long value;
102
103 if (kstrtol(buf, 10, &value))
104 return -EINVAL;
105
106 therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST,
107 value / 1000);
108
109 return count;
110}
111static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp_hyst, 0644,
112 nouveau_hwmon_temp1_auto_point1_temp_hyst,
113 nouveau_hwmon_set_temp1_auto_point1_temp_hyst, 0);
114
115static ssize_t
116nouveau_hwmon_get_pwm1_max(struct device *d,
117 struct device_attribute *a, char *buf)
118{
119 struct drm_device *dev = dev_get_drvdata(d);
120 struct nouveau_drm *drm = nouveau_drm(dev);
121 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
122 int ret;
123
124 ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY);
125 if (ret < 0)
126 return ret;
127
128 return sprintf(buf, "%i\n", ret);
129}
130
131static ssize_t
132nouveau_hwmon_get_pwm1_min(struct device *d,
133 struct device_attribute *a, char *buf)
134{
135 struct drm_device *dev = dev_get_drvdata(d);
136 struct nouveau_drm *drm = nouveau_drm(dev);
137 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
138 int ret;
139
140 ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY);
141 if (ret < 0)
142 return ret;
143
144 return sprintf(buf, "%i\n", ret);
145}
146
147static ssize_t
148nouveau_hwmon_set_pwm1_min(struct device *d, struct device_attribute *a,
149 const char *buf, size_t count)
150{
151 struct drm_device *dev = dev_get_drvdata(d);
152 struct nouveau_drm *drm = nouveau_drm(dev);
153 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
154 long value;
155 int ret;
156
157 if (kstrtol(buf, 10, &value))
158 return -EINVAL;
159
160 ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY, value);
161 if (ret < 0)
162 return ret;
163
164 return count;
165}
166static SENSOR_DEVICE_ATTR(pwm1_min, 0644,
167 nouveau_hwmon_get_pwm1_min,
168 nouveau_hwmon_set_pwm1_min, 0);
169
170static ssize_t
171nouveau_hwmon_set_pwm1_max(struct device *d, struct device_attribute *a,
172 const char *buf, size_t count)
173{
174 struct drm_device *dev = dev_get_drvdata(d);
175 struct nouveau_drm *drm = nouveau_drm(dev);
176 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
177 long value;
178 int ret;
179
180 if (kstrtol(buf, 10, &value))
181 return -EINVAL;
182
183 ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY, value);
184 if (ret < 0)
185 return ret;
186
187 return count;
188}
189static SENSOR_DEVICE_ATTR(pwm1_max, 0644,
190 nouveau_hwmon_get_pwm1_max,
191 nouveau_hwmon_set_pwm1_max, 0);
192
193static struct attribute *pwm_fan_sensor_attrs[] = {
194 &sensor_dev_attr_pwm1_min.dev_attr.attr,
195 &sensor_dev_attr_pwm1_max.dev_attr.attr,
196 NULL
197};
198static const struct attribute_group pwm_fan_sensor_group = {
199 .attrs = pwm_fan_sensor_attrs,
200};
201
202static struct attribute *temp1_auto_point_sensor_attrs[] = {
203 &sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr,
204 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
205 &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
206 NULL
207};
208static const struct attribute_group temp1_auto_point_sensor_group = {
209 .attrs = temp1_auto_point_sensor_attrs,
210};
211
212#define N_ATTR_GROUPS 3
213
214static const struct hwmon_channel_info * const nouveau_info[] = {
215 HWMON_CHANNEL_INFO(chip,
216 HWMON_C_UPDATE_INTERVAL),
217 HWMON_CHANNEL_INFO(temp,
218 HWMON_T_INPUT |
219 HWMON_T_MAX | HWMON_T_MAX_HYST |
220 HWMON_T_CRIT | HWMON_T_CRIT_HYST |
221 HWMON_T_EMERGENCY | HWMON_T_EMERGENCY_HYST),
222 HWMON_CHANNEL_INFO(fan,
223 HWMON_F_INPUT),
224 HWMON_CHANNEL_INFO(in,
225 HWMON_I_INPUT |
226 HWMON_I_MIN | HWMON_I_MAX |
227 HWMON_I_LABEL),
228 HWMON_CHANNEL_INFO(pwm,
229 HWMON_PWM_INPUT | HWMON_PWM_ENABLE),
230 HWMON_CHANNEL_INFO(power,
231 HWMON_P_INPUT | HWMON_P_CAP_MAX | HWMON_P_CRIT),
232 NULL
233};
234
235static umode_t
236nouveau_chip_is_visible(const void *data, u32 attr, int channel)
237{
238 switch (attr) {
239 case hwmon_chip_update_interval:
240 return 0444;
241 default:
242 return 0;
243 }
244}
245
246static umode_t
247nouveau_power_is_visible(const void *data, u32 attr, int channel)
248{
249 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
250 struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device);
251
252 if (!iccsense || !iccsense->data_valid || list_empty(&iccsense->rails))
253 return 0;
254
255 switch (attr) {
256 case hwmon_power_input:
257 return 0444;
258 case hwmon_power_max:
259 if (iccsense->power_w_max)
260 return 0444;
261 return 0;
262 case hwmon_power_crit:
263 if (iccsense->power_w_crit)
264 return 0444;
265 return 0;
266 default:
267 return 0;
268 }
269}
270
271static umode_t
272nouveau_temp_is_visible(const void *data, u32 attr, int channel)
273{
274 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
275 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
276
277 if (!therm || !therm->attr_get || nvkm_therm_temp_get(therm) < 0)
278 return 0;
279
280 switch (attr) {
281 case hwmon_temp_input:
282 return 0444;
283 case hwmon_temp_max:
284 case hwmon_temp_max_hyst:
285 case hwmon_temp_crit:
286 case hwmon_temp_crit_hyst:
287 case hwmon_temp_emergency:
288 case hwmon_temp_emergency_hyst:
289 return 0644;
290 default:
291 return 0;
292 }
293}
294
295static umode_t
296nouveau_pwm_is_visible(const void *data, u32 attr, int channel)
297{
298 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
299 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
300
301 if (!therm || !therm->attr_get || !therm->fan_get ||
302 therm->fan_get(therm) < 0)
303 return 0;
304
305 switch (attr) {
306 case hwmon_pwm_enable:
307 case hwmon_pwm_input:
308 return 0644;
309 default:
310 return 0;
311 }
312}
313
314static umode_t
315nouveau_input_is_visible(const void *data, u32 attr, int channel)
316{
317 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
318 struct nvkm_volt *volt = nvxx_volt(&drm->client.device);
319
320 if (!volt || nvkm_volt_get(volt) < 0)
321 return 0;
322
323 switch (attr) {
324 case hwmon_in_input:
325 case hwmon_in_label:
326 case hwmon_in_min:
327 case hwmon_in_max:
328 return 0444;
329 default:
330 return 0;
331 }
332}
333
334static umode_t
335nouveau_fan_is_visible(const void *data, u32 attr, int channel)
336{
337 struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
338 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
339
340 if (!therm || !therm->attr_get || nvkm_therm_fan_sense(therm) < 0)
341 return 0;
342
343 switch (attr) {
344 case hwmon_fan_input:
345 return 0444;
346 default:
347 return 0;
348 }
349}
350
351static int
352nouveau_chip_read(struct device *dev, u32 attr, int channel, long *val)
353{
354 switch (attr) {
355 case hwmon_chip_update_interval:
356 *val = 1000;
357 break;
358 default:
359 return -EOPNOTSUPP;
360 }
361
362 return 0;
363}
364
365static int
366nouveau_temp_read(struct device *dev, u32 attr, int channel, long *val)
367{
368 struct drm_device *drm_dev = dev_get_drvdata(dev);
369 struct nouveau_drm *drm = nouveau_drm(drm_dev);
370 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
371 int ret;
372
373 if (!therm || !therm->attr_get)
374 return -EOPNOTSUPP;
375
376 switch (attr) {
377 case hwmon_temp_input:
378 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
379 return -EINVAL;
380 ret = nvkm_therm_temp_get(therm);
381 *val = ret < 0 ? ret : (ret * 1000);
382 break;
383 case hwmon_temp_max:
384 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK)
385 * 1000;
386 break;
387 case hwmon_temp_max_hyst:
388 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST)
389 * 1000;
390 break;
391 case hwmon_temp_crit:
392 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL)
393 * 1000;
394 break;
395 case hwmon_temp_crit_hyst:
396 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST)
397 * 1000;
398 break;
399 case hwmon_temp_emergency:
400 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN)
401 * 1000;
402 break;
403 case hwmon_temp_emergency_hyst:
404 *val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST)
405 * 1000;
406 break;
407 default:
408 return -EOPNOTSUPP;
409 }
410
411 return 0;
412}
413
414static int
415nouveau_fan_read(struct device *dev, u32 attr, int channel, long *val)
416{
417 struct drm_device *drm_dev = dev_get_drvdata(dev);
418 struct nouveau_drm *drm = nouveau_drm(drm_dev);
419 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
420
421 if (!therm)
422 return -EOPNOTSUPP;
423
424 switch (attr) {
425 case hwmon_fan_input:
426 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
427 return -EINVAL;
428 *val = nvkm_therm_fan_sense(therm);
429 break;
430 default:
431 return -EOPNOTSUPP;
432 }
433
434 return 0;
435}
436
437static int
438nouveau_in_read(struct device *dev, u32 attr, int channel, long *val)
439{
440 struct drm_device *drm_dev = dev_get_drvdata(dev);
441 struct nouveau_drm *drm = nouveau_drm(drm_dev);
442 struct nvkm_volt *volt = nvxx_volt(&drm->client.device);
443 int ret;
444
445 if (!volt)
446 return -EOPNOTSUPP;
447
448 switch (attr) {
449 case hwmon_in_input:
450 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
451 return -EINVAL;
452 ret = nvkm_volt_get(volt);
453 *val = ret < 0 ? ret : (ret / 1000);
454 break;
455 case hwmon_in_min:
456 *val = volt->min_uv > 0 ? (volt->min_uv / 1000) : -ENODEV;
457 break;
458 case hwmon_in_max:
459 *val = volt->max_uv > 0 ? (volt->max_uv / 1000) : -ENODEV;
460 break;
461 default:
462 return -EOPNOTSUPP;
463 }
464
465 return 0;
466}
467
468static int
469nouveau_pwm_read(struct device *dev, u32 attr, int channel, long *val)
470{
471 struct drm_device *drm_dev = dev_get_drvdata(dev);
472 struct nouveau_drm *drm = nouveau_drm(drm_dev);
473 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
474
475 if (!therm || !therm->attr_get || !therm->fan_get)
476 return -EOPNOTSUPP;
477
478 switch (attr) {
479 case hwmon_pwm_enable:
480 *val = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MODE);
481 break;
482 case hwmon_pwm_input:
483 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
484 return -EINVAL;
485 *val = therm->fan_get(therm);
486 break;
487 default:
488 return -EOPNOTSUPP;
489 }
490
491 return 0;
492}
493
494static int
495nouveau_power_read(struct device *dev, u32 attr, int channel, long *val)
496{
497 struct drm_device *drm_dev = dev_get_drvdata(dev);
498 struct nouveau_drm *drm = nouveau_drm(drm_dev);
499 struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device);
500
501 if (!iccsense)
502 return -EOPNOTSUPP;
503
504 switch (attr) {
505 case hwmon_power_input:
506 if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
507 return -EINVAL;
508 *val = nvkm_iccsense_read_all(iccsense);
509 break;
510 case hwmon_power_max:
511 *val = iccsense->power_w_max;
512 break;
513 case hwmon_power_crit:
514 *val = iccsense->power_w_crit;
515 break;
516 default:
517 return -EOPNOTSUPP;
518 }
519
520 return 0;
521}
522
523static int
524nouveau_temp_write(struct device *dev, u32 attr, int channel, long val)
525{
526 struct drm_device *drm_dev = dev_get_drvdata(dev);
527 struct nouveau_drm *drm = nouveau_drm(drm_dev);
528 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
529
530 if (!therm || !therm->attr_set)
531 return -EOPNOTSUPP;
532
533 switch (attr) {
534 case hwmon_temp_max:
535 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK,
536 val / 1000);
537 case hwmon_temp_max_hyst:
538 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST,
539 val / 1000);
540 case hwmon_temp_crit:
541 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL,
542 val / 1000);
543 case hwmon_temp_crit_hyst:
544 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST,
545 val / 1000);
546 case hwmon_temp_emergency:
547 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN,
548 val / 1000);
549 case hwmon_temp_emergency_hyst:
550 return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST,
551 val / 1000);
552 default:
553 return -EOPNOTSUPP;
554 }
555}
556
557static int
558nouveau_pwm_write(struct device *dev, u32 attr, int channel, long val)
559{
560 struct drm_device *drm_dev = dev_get_drvdata(dev);
561 struct nouveau_drm *drm = nouveau_drm(drm_dev);
562 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
563
564 if (!therm || !therm->attr_set)
565 return -EOPNOTSUPP;
566
567 switch (attr) {
568 case hwmon_pwm_input:
569 return therm->fan_set(therm, val);
570 case hwmon_pwm_enable:
571 return therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MODE, val);
572 default:
573 return -EOPNOTSUPP;
574 }
575}
576
577static umode_t
578nouveau_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
579 int channel)
580{
581 switch (type) {
582 case hwmon_chip:
583 return nouveau_chip_is_visible(data, attr, channel);
584 case hwmon_temp:
585 return nouveau_temp_is_visible(data, attr, channel);
586 case hwmon_fan:
587 return nouveau_fan_is_visible(data, attr, channel);
588 case hwmon_in:
589 return nouveau_input_is_visible(data, attr, channel);
590 case hwmon_pwm:
591 return nouveau_pwm_is_visible(data, attr, channel);
592 case hwmon_power:
593 return nouveau_power_is_visible(data, attr, channel);
594 default:
595 return 0;
596 }
597}
598
599static const char input_label[] = "GPU core";
600
601static int
602nouveau_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr,
603 int channel, const char **buf)
604{
605 if (type == hwmon_in && attr == hwmon_in_label) {
606 *buf = input_label;
607 return 0;
608 }
609
610 return -EOPNOTSUPP;
611}
612
613static int
614nouveau_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
615 int channel, long *val)
616{
617 switch (type) {
618 case hwmon_chip:
619 return nouveau_chip_read(dev, attr, channel, val);
620 case hwmon_temp:
621 return nouveau_temp_read(dev, attr, channel, val);
622 case hwmon_fan:
623 return nouveau_fan_read(dev, attr, channel, val);
624 case hwmon_in:
625 return nouveau_in_read(dev, attr, channel, val);
626 case hwmon_pwm:
627 return nouveau_pwm_read(dev, attr, channel, val);
628 case hwmon_power:
629 return nouveau_power_read(dev, attr, channel, val);
630 default:
631 return -EOPNOTSUPP;
632 }
633}
634
635static int
636nouveau_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
637 int channel, long val)
638{
639 switch (type) {
640 case hwmon_temp:
641 return nouveau_temp_write(dev, attr, channel, val);
642 case hwmon_pwm:
643 return nouveau_pwm_write(dev, attr, channel, val);
644 default:
645 return -EOPNOTSUPP;
646 }
647}
648
649static const struct hwmon_ops nouveau_hwmon_ops = {
650 .is_visible = nouveau_is_visible,
651 .read = nouveau_read,
652 .read_string = nouveau_read_string,
653 .write = nouveau_write,
654};
655
656static const struct hwmon_chip_info nouveau_chip_info = {
657 .ops = &nouveau_hwmon_ops,
658 .info = nouveau_info,
659};
660#endif
661
662int
663nouveau_hwmon_init(struct drm_device *dev)
664{
665#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
666 struct nouveau_drm *drm = nouveau_drm(dev);
667 struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device);
668 struct nvkm_therm *therm = nvxx_therm(&drm->client.device);
669 struct nvkm_volt *volt = nvxx_volt(&drm->client.device);
670 const struct attribute_group *special_groups[N_ATTR_GROUPS];
671 struct nouveau_hwmon *hwmon;
672 struct device *hwmon_dev;
673 int ret = 0;
674 int i = 0;
675
676 if (!iccsense && !therm && !volt) {
677 NV_DEBUG(drm, "Skipping hwmon registration\n");
678 return 0;
679 }
680
681 hwmon = drm->hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL);
682 if (!hwmon)
683 return -ENOMEM;
684 hwmon->dev = dev;
685
686 if (therm && therm->attr_get && therm->attr_set) {
687 if (nvkm_therm_temp_get(therm) >= 0)
688 special_groups[i++] = &temp1_auto_point_sensor_group;
689 if (therm->fan_get && therm->fan_get(therm) >= 0)
690 special_groups[i++] = &pwm_fan_sensor_group;
691 }
692
693 special_groups[i] = NULL;
694 hwmon_dev = hwmon_device_register_with_info(dev->dev, "nouveau", dev,
695 &nouveau_chip_info,
696 special_groups);
697 if (IS_ERR(hwmon_dev)) {
698 ret = PTR_ERR(hwmon_dev);
699 NV_ERROR(drm, "Unable to register hwmon device: %d\n", ret);
700 return ret;
701 }
702
703 hwmon->hwmon = hwmon_dev;
704 return 0;
705#else
706 return 0;
707#endif
708}
709
710void
711nouveau_hwmon_fini(struct drm_device *dev)
712{
713#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
714 struct nouveau_hwmon *hwmon = nouveau_hwmon(dev);
715
716 if (!hwmon)
717 return;
718
719 if (hwmon->hwmon)
720 hwmon_device_unregister(hwmon->hwmon);
721
722 nouveau_drm(dev)->hwmon = NULL;
723 kfree(hwmon);
724#endif
725}