Loading...
Note: File does not exist in v3.1.
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}