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 | |
40 | static ssize_t |
41 | nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d, |
42 | struct device_attribute *a, char *buf) |
43 | { |
44 | return sysfs_emit(buf, fmt: "%d\n" , 100); |
45 | } |
46 | static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, 0444, |
47 | nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0); |
48 | |
49 | static ssize_t |
50 | nouveau_hwmon_temp1_auto_point1_temp(struct device *d, |
51 | struct device_attribute *a, char *buf) |
52 | { |
53 | struct drm_device *dev = dev_get_drvdata(dev: 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, fmt: "%d\n" , |
58 | therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000); |
59 | } |
60 | static ssize_t |
61 | nouveau_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(dev: 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(s: buf, base: 10, res: &value)) |
71 | return -EINVAL; |
72 | |
73 | therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST, |
74 | value / 1000); |
75 | |
76 | return count; |
77 | } |
78 | static 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 | |
82 | static ssize_t |
83 | nouveau_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(dev: 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, fmt: "%d\n" , |
91 | therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000); |
92 | } |
93 | static ssize_t |
94 | nouveau_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(dev: 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(s: buf, base: 10, res: &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 | } |
111 | static 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 | |
115 | static ssize_t |
116 | nouveau_hwmon_get_pwm1_max(struct device *d, |
117 | struct device_attribute *a, char *buf) |
118 | { |
119 | struct drm_device *dev = dev_get_drvdata(dev: 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, fmt: "%i\n" , ret); |
129 | } |
130 | |
131 | static ssize_t |
132 | nouveau_hwmon_get_pwm1_min(struct device *d, |
133 | struct device_attribute *a, char *buf) |
134 | { |
135 | struct drm_device *dev = dev_get_drvdata(dev: 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, fmt: "%i\n" , ret); |
145 | } |
146 | |
147 | static ssize_t |
148 | nouveau_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(dev: 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(s: buf, base: 10, res: &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 | } |
166 | static SENSOR_DEVICE_ATTR(pwm1_min, 0644, |
167 | nouveau_hwmon_get_pwm1_min, |
168 | nouveau_hwmon_set_pwm1_min, 0); |
169 | |
170 | static ssize_t |
171 | nouveau_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(dev: 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(s: buf, base: 10, res: &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 | } |
189 | static SENSOR_DEVICE_ATTR(pwm1_max, 0644, |
190 | nouveau_hwmon_get_pwm1_max, |
191 | nouveau_hwmon_set_pwm1_max, 0); |
192 | |
193 | static 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 | }; |
198 | static const struct attribute_group pwm_fan_sensor_group = { |
199 | .attrs = pwm_fan_sensor_attrs, |
200 | }; |
201 | |
202 | static 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 | }; |
208 | static 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 | |
214 | static 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 | |
235 | static umode_t |
236 | nouveau_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 | |
246 | static umode_t |
247 | nouveau_power_is_visible(const void *data, u32 attr, int channel) |
248 | { |
249 | struct nouveau_drm *drm = nouveau_drm(dev: (struct drm_device *)data); |
250 | struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device); |
251 | |
252 | if (!iccsense || !iccsense->data_valid || list_empty(head: &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 | |
271 | static umode_t |
272 | nouveau_temp_is_visible(const void *data, u32 attr, int channel) |
273 | { |
274 | struct nouveau_drm *drm = nouveau_drm(dev: (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 | |
295 | static umode_t |
296 | nouveau_pwm_is_visible(const void *data, u32 attr, int channel) |
297 | { |
298 | struct nouveau_drm *drm = nouveau_drm(dev: (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 | |
314 | static umode_t |
315 | nouveau_input_is_visible(const void *data, u32 attr, int channel) |
316 | { |
317 | struct nouveau_drm *drm = nouveau_drm(dev: (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 | |
334 | static umode_t |
335 | nouveau_fan_is_visible(const void *data, u32 attr, int channel) |
336 | { |
337 | struct nouveau_drm *drm = nouveau_drm(dev: (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 | |
351 | static int |
352 | nouveau_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 | |
365 | static int |
366 | nouveau_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(dev: 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 | |
414 | static int |
415 | nouveau_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(dev: 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 | |
437 | static int |
438 | nouveau_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(dev: 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 | |
468 | static int |
469 | nouveau_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(dev: 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 | |
494 | static int |
495 | nouveau_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(dev: 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 | |
523 | static int |
524 | nouveau_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(dev: 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 | |
557 | static int |
558 | nouveau_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(dev: 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 | |
577 | static umode_t |
578 | nouveau_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 | |
599 | static const char input_label[] = "GPU core" ; |
600 | |
601 | static int |
602 | nouveau_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 | |
613 | static int |
614 | nouveau_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 | |
635 | static int |
636 | nouveau_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 | |
649 | static 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 | |
656 | static const struct hwmon_chip_info nouveau_chip_info = { |
657 | .ops = &nouveau_hwmon_ops, |
658 | .info = nouveau_info, |
659 | }; |
660 | #endif |
661 | |
662 | int |
663 | nouveau_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(size: 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->dev, name: "nouveau" , drvdata: dev, |
695 | info: &nouveau_chip_info, |
696 | extra_groups: special_groups); |
697 | if (IS_ERR(ptr: hwmon_dev)) { |
698 | ret = PTR_ERR(ptr: 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 | |
710 | void |
711 | nouveau_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(dev: hwmon->hwmon); |
721 | |
722 | nouveau_drm(dev)->hwmon = NULL; |
723 | kfree(objp: hwmon); |
724 | #endif |
725 | } |
726 | |