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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#include "drmP.h"
26
27#include "nouveau_drv.h"
28#include "nouveau_pm.h"
29#include "nouveau_gpio.h"
30
31#ifdef CONFIG_ACPI
32#include <linux/acpi.h>
33#endif
34#include <linux/power_supply.h>
35#include <linux/hwmon.h>
36#include <linux/hwmon-sysfs.h>
37
38static int
39nouveau_pwmfan_get(struct drm_device *dev)
40{
41 struct drm_nouveau_private *dev_priv = dev->dev_private;
42 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
43 struct gpio_func gpio;
44 u32 divs, duty;
45 int ret;
46
47 if (!pm->pwm_get)
48 return -ENODEV;
49
50 ret = nouveau_gpio_find(dev, 0, DCB_GPIO_PWM_FAN, 0xff, &gpio);
51 if (ret == 0) {
52 ret = pm->pwm_get(dev, gpio.line, &divs, &duty);
53 if (ret == 0 && divs) {
54 divs = max(divs, duty);
55 if (dev_priv->card_type <= NV_40 || (gpio.log[0] & 1))
56 duty = divs - duty;
57 return (duty * 100) / divs;
58 }
59
60 return nouveau_gpio_func_get(dev, gpio.func) * 100;
61 }
62
63 return -ENODEV;
64}
65
66static int
67nouveau_pwmfan_set(struct drm_device *dev, int percent)
68{
69 struct drm_nouveau_private *dev_priv = dev->dev_private;
70 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
71 struct gpio_func gpio;
72 u32 divs, duty;
73 int ret;
74
75 if (!pm->pwm_set)
76 return -ENODEV;
77
78 ret = nouveau_gpio_find(dev, 0, DCB_GPIO_PWM_FAN, 0xff, &gpio);
79 if (ret == 0) {
80 divs = pm->fan.pwm_divisor;
81 if (pm->fan.pwm_freq) {
82 /*XXX: PNVIO clock more than likely... */
83 divs = 135000 / pm->fan.pwm_freq;
84 if (dev_priv->chipset < 0xa3)
85 divs /= 4;
86 }
87
88 duty = ((divs * percent) + 99) / 100;
89 if (dev_priv->card_type <= NV_40 || (gpio.log[0] & 1))
90 duty = divs - duty;
91
92 ret = pm->pwm_set(dev, gpio.line, divs, duty);
93 if (!ret)
94 pm->fan.percent = percent;
95 return ret;
96 }
97
98 return -ENODEV;
99}
100
101static int
102nouveau_pm_perflvl_aux(struct drm_device *dev, struct nouveau_pm_level *perflvl,
103 struct nouveau_pm_level *a, struct nouveau_pm_level *b)
104{
105 struct drm_nouveau_private *dev_priv = dev->dev_private;
106 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
107 int ret;
108
109 /*XXX: not on all boards, we should control based on temperature
110 * on recent boards.. or maybe on some other factor we don't
111 * know about?
112 */
113 if (a->fanspeed && b->fanspeed && b->fanspeed > a->fanspeed) {
114 ret = nouveau_pwmfan_set(dev, perflvl->fanspeed);
115 if (ret && ret != -ENODEV) {
116 NV_ERROR(dev, "fanspeed set failed: %d\n", ret);
117 return ret;
118 }
119 }
120
121 if (pm->voltage.supported && pm->voltage_set) {
122 if (perflvl->volt_min && b->volt_min > a->volt_min) {
123 ret = pm->voltage_set(dev, perflvl->volt_min);
124 if (ret) {
125 NV_ERROR(dev, "voltage set failed: %d\n", ret);
126 return ret;
127 }
128 }
129 }
130
131 return 0;
132}
133
134static int
135nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl)
136{
137 struct drm_nouveau_private *dev_priv = dev->dev_private;
138 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
139 void *state;
140 int ret;
141
142 if (perflvl == pm->cur)
143 return 0;
144
145 ret = nouveau_pm_perflvl_aux(dev, perflvl, pm->cur, perflvl);
146 if (ret)
147 return ret;
148
149 state = pm->clocks_pre(dev, perflvl);
150 if (IS_ERR(state)) {
151 ret = PTR_ERR(state);
152 goto error;
153 }
154 ret = pm->clocks_set(dev, state);
155 if (ret)
156 goto error;
157
158 ret = nouveau_pm_perflvl_aux(dev, perflvl, perflvl, pm->cur);
159 if (ret)
160 return ret;
161
162 pm->cur = perflvl;
163 return 0;
164
165error:
166 /* restore the fan speed and voltage before leaving */
167 nouveau_pm_perflvl_aux(dev, perflvl, perflvl, pm->cur);
168 return ret;
169}
170
171void
172nouveau_pm_trigger(struct drm_device *dev)
173{
174 struct drm_nouveau_private *dev_priv = dev->dev_private;
175 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
176 struct nouveau_pm_profile *profile = NULL;
177 struct nouveau_pm_level *perflvl = NULL;
178 int ret;
179
180 /* select power profile based on current power source */
181 if (power_supply_is_system_supplied())
182 profile = pm->profile_ac;
183 else
184 profile = pm->profile_dc;
185
186 if (profile != pm->profile) {
187 pm->profile->func->fini(pm->profile);
188 pm->profile = profile;
189 pm->profile->func->init(pm->profile);
190 }
191
192 /* select performance level based on profile */
193 perflvl = profile->func->select(profile);
194
195 /* change perflvl, if necessary */
196 if (perflvl != pm->cur) {
197 struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
198 u64 time0 = ptimer->read(dev);
199
200 NV_INFO(dev, "setting performance level: %d", perflvl->id);
201 ret = nouveau_pm_perflvl_set(dev, perflvl);
202 if (ret)
203 NV_INFO(dev, "> reclocking failed: %d\n\n", ret);
204
205 NV_INFO(dev, "> reclocking took %lluns\n\n",
206 ptimer->read(dev) - time0);
207 }
208}
209
210static struct nouveau_pm_profile *
211profile_find(struct drm_device *dev, const char *string)
212{
213 struct drm_nouveau_private *dev_priv = dev->dev_private;
214 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
215 struct nouveau_pm_profile *profile;
216
217 list_for_each_entry(profile, &pm->profiles, head) {
218 if (!strncmp(profile->name, string, sizeof(profile->name)))
219 return profile;
220 }
221
222 return NULL;
223}
224
225static int
226nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
227{
228 struct drm_nouveau_private *dev_priv = dev->dev_private;
229 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
230 struct nouveau_pm_profile *ac = NULL, *dc = NULL;
231 char string[16], *cur = string, *ptr;
232
233 /* safety precaution, for now */
234 if (nouveau_perflvl_wr != 7777)
235 return -EPERM;
236
237 strncpy(string, profile, sizeof(string));
238 string[sizeof(string) - 1] = 0;
239 if ((ptr = strchr(string, '\n')))
240 *ptr = '\0';
241
242 ptr = strsep(&cur, ",");
243 if (ptr)
244 ac = profile_find(dev, ptr);
245
246 ptr = strsep(&cur, ",");
247 if (ptr)
248 dc = profile_find(dev, ptr);
249 else
250 dc = ac;
251
252 if (ac == NULL || dc == NULL)
253 return -EINVAL;
254
255 pm->profile_ac = ac;
256 pm->profile_dc = dc;
257 nouveau_pm_trigger(dev);
258 return 0;
259}
260
261static void
262nouveau_pm_static_dummy(struct nouveau_pm_profile *profile)
263{
264}
265
266static struct nouveau_pm_level *
267nouveau_pm_static_select(struct nouveau_pm_profile *profile)
268{
269 return container_of(profile, struct nouveau_pm_level, profile);
270}
271
272const struct nouveau_pm_profile_func nouveau_pm_static_profile_func = {
273 .destroy = nouveau_pm_static_dummy,
274 .init = nouveau_pm_static_dummy,
275 .fini = nouveau_pm_static_dummy,
276 .select = nouveau_pm_static_select,
277};
278
279static int
280nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
281{
282 struct drm_nouveau_private *dev_priv = dev->dev_private;
283 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
284 int ret;
285
286 memset(perflvl, 0, sizeof(*perflvl));
287
288 if (pm->clocks_get) {
289 ret = pm->clocks_get(dev, perflvl);
290 if (ret)
291 return ret;
292 }
293
294 if (pm->voltage.supported && pm->voltage_get) {
295 ret = pm->voltage_get(dev);
296 if (ret > 0) {
297 perflvl->volt_min = ret;
298 perflvl->volt_max = ret;
299 }
300 }
301
302 ret = nouveau_pwmfan_get(dev);
303 if (ret > 0)
304 perflvl->fanspeed = ret;
305
306 nouveau_mem_timing_read(dev, &perflvl->timing);
307 return 0;
308}
309
310static void
311nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
312{
313 char c[16], s[16], v[32], f[16], m[16];
314
315 c[0] = '\0';
316 if (perflvl->core)
317 snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);
318
319 s[0] = '\0';
320 if (perflvl->shader)
321 snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
322
323 m[0] = '\0';
324 if (perflvl->memory)
325 snprintf(m, sizeof(m), " memory %dMHz", perflvl->memory / 1000);
326
327 v[0] = '\0';
328 if (perflvl->volt_min && perflvl->volt_min != perflvl->volt_max) {
329 snprintf(v, sizeof(v), " voltage %dmV-%dmV",
330 perflvl->volt_min / 1000, perflvl->volt_max / 1000);
331 } else
332 if (perflvl->volt_min) {
333 snprintf(v, sizeof(v), " voltage %dmV",
334 perflvl->volt_min / 1000);
335 }
336
337 f[0] = '\0';
338 if (perflvl->fanspeed)
339 snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
340
341 snprintf(ptr, len, "%s%s%s%s%s\n", c, s, m, v, f);
342}
343
344static ssize_t
345nouveau_pm_get_perflvl_info(struct device *d,
346 struct device_attribute *a, char *buf)
347{
348 struct nouveau_pm_level *perflvl =
349 container_of(a, struct nouveau_pm_level, dev_attr);
350 char *ptr = buf;
351 int len = PAGE_SIZE;
352
353 snprintf(ptr, len, "%d:", perflvl->id);
354 ptr += strlen(buf);
355 len -= strlen(buf);
356
357 nouveau_pm_perflvl_info(perflvl, ptr, len);
358 return strlen(buf);
359}
360
361static ssize_t
362nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
363{
364 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
365 struct drm_nouveau_private *dev_priv = dev->dev_private;
366 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
367 struct nouveau_pm_level cur;
368 int len = PAGE_SIZE, ret;
369 char *ptr = buf;
370
371 snprintf(ptr, len, "profile: %s, %s\nc:",
372 pm->profile_ac->name, pm->profile_dc->name);
373 ptr += strlen(buf);
374 len -= strlen(buf);
375
376 ret = nouveau_pm_perflvl_get(dev, &cur);
377 if (ret == 0)
378 nouveau_pm_perflvl_info(&cur, ptr, len);
379 return strlen(buf);
380}
381
382static ssize_t
383nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
384 const char *buf, size_t count)
385{
386 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
387 int ret;
388
389 ret = nouveau_pm_profile_set(dev, buf);
390 if (ret)
391 return ret;
392 return strlen(buf);
393}
394
395static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
396 nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
397
398static int
399nouveau_sysfs_init(struct drm_device *dev)
400{
401 struct drm_nouveau_private *dev_priv = dev->dev_private;
402 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
403 struct device *d = &dev->pdev->dev;
404 int ret, i;
405
406 ret = device_create_file(d, &dev_attr_performance_level);
407 if (ret)
408 return ret;
409
410 for (i = 0; i < pm->nr_perflvl; i++) {
411 struct nouveau_pm_level *perflvl = &pm->perflvl[i];
412
413 perflvl->dev_attr.attr.name = perflvl->name;
414 perflvl->dev_attr.attr.mode = S_IRUGO;
415 perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
416 perflvl->dev_attr.store = NULL;
417 sysfs_attr_init(&perflvl->dev_attr.attr);
418
419 ret = device_create_file(d, &perflvl->dev_attr);
420 if (ret) {
421 NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
422 perflvl->id, i);
423 perflvl->dev_attr.attr.name = NULL;
424 nouveau_pm_fini(dev);
425 return ret;
426 }
427 }
428
429 return 0;
430}
431
432static void
433nouveau_sysfs_fini(struct drm_device *dev)
434{
435 struct drm_nouveau_private *dev_priv = dev->dev_private;
436 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
437 struct device *d = &dev->pdev->dev;
438 int i;
439
440 device_remove_file(d, &dev_attr_performance_level);
441 for (i = 0; i < pm->nr_perflvl; i++) {
442 struct nouveau_pm_level *pl = &pm->perflvl[i];
443
444 if (!pl->dev_attr.attr.name)
445 break;
446
447 device_remove_file(d, &pl->dev_attr);
448 }
449}
450
451#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
452static ssize_t
453nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
454{
455 struct drm_device *dev = dev_get_drvdata(d);
456 struct drm_nouveau_private *dev_priv = dev->dev_private;
457 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
458
459 return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
460}
461static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
462 NULL, 0);
463
464static ssize_t
465nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
466{
467 struct drm_device *dev = dev_get_drvdata(d);
468 struct drm_nouveau_private *dev_priv = dev->dev_private;
469 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
470 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
471
472 return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
473}
474static ssize_t
475nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
476 const char *buf, size_t count)
477{
478 struct drm_device *dev = dev_get_drvdata(d);
479 struct drm_nouveau_private *dev_priv = dev->dev_private;
480 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
481 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
482 long value;
483
484 if (kstrtol(buf, 10, &value) == -EINVAL)
485 return count;
486
487 temp->down_clock = value/1000;
488
489 nouveau_temp_safety_checks(dev);
490
491 return count;
492}
493static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
494 nouveau_hwmon_set_max_temp,
495 0);
496
497static ssize_t
498nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
499 char *buf)
500{
501 struct drm_device *dev = dev_get_drvdata(d);
502 struct drm_nouveau_private *dev_priv = dev->dev_private;
503 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
504 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
505
506 return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
507}
508static ssize_t
509nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
510 const char *buf,
511 size_t count)
512{
513 struct drm_device *dev = dev_get_drvdata(d);
514 struct drm_nouveau_private *dev_priv = dev->dev_private;
515 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
516 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
517 long value;
518
519 if (kstrtol(buf, 10, &value) == -EINVAL)
520 return count;
521
522 temp->critical = value/1000;
523
524 nouveau_temp_safety_checks(dev);
525
526 return count;
527}
528static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
529 nouveau_hwmon_critical_temp,
530 nouveau_hwmon_set_critical_temp,
531 0);
532
533static ssize_t nouveau_hwmon_show_name(struct device *dev,
534 struct device_attribute *attr,
535 char *buf)
536{
537 return sprintf(buf, "nouveau\n");
538}
539static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
540
541static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
542 struct device_attribute *attr,
543 char *buf)
544{
545 return sprintf(buf, "1000\n");
546}
547static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
548 nouveau_hwmon_show_update_rate,
549 NULL, 0);
550
551static ssize_t
552nouveau_hwmon_show_fan0_input(struct device *d, struct device_attribute *attr,
553 char *buf)
554{
555 struct drm_device *dev = dev_get_drvdata(d);
556 struct drm_nouveau_private *dev_priv = dev->dev_private;
557 struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
558 struct gpio_func gpio;
559 u32 cycles, cur, prev;
560 u64 start;
561 int ret;
562
563 ret = nouveau_gpio_find(dev, 0, DCB_GPIO_FAN_SENSE, 0xff, &gpio);
564 if (ret)
565 return ret;
566
567 /* Monitor the GPIO input 0x3b for 250ms.
568 * When the fan spins, it changes the value of GPIO FAN_SENSE.
569 * We get 4 changes (0 -> 1 -> 0 -> 1 -> [...]) per complete rotation.
570 */
571 start = ptimer->read(dev);
572 prev = nouveau_gpio_sense(dev, 0, gpio.line);
573 cycles = 0;
574 do {
575 cur = nouveau_gpio_sense(dev, 0, gpio.line);
576 if (prev != cur) {
577 cycles++;
578 prev = cur;
579 }
580
581 usleep_range(500, 1000); /* supports 0 < rpm < 7500 */
582 } while (ptimer->read(dev) - start < 250000000);
583
584 /* interpolate to get rpm */
585 return sprintf(buf, "%i\n", cycles / 4 * 4 * 60);
586}
587static SENSOR_DEVICE_ATTR(fan0_input, S_IRUGO, nouveau_hwmon_show_fan0_input,
588 NULL, 0);
589
590static ssize_t
591nouveau_hwmon_get_pwm0(struct device *d, struct device_attribute *a, char *buf)
592{
593 struct drm_device *dev = dev_get_drvdata(d);
594 int ret;
595
596 ret = nouveau_pwmfan_get(dev);
597 if (ret < 0)
598 return ret;
599
600 return sprintf(buf, "%i\n", ret);
601}
602
603static ssize_t
604nouveau_hwmon_set_pwm0(struct device *d, struct device_attribute *a,
605 const char *buf, size_t count)
606{
607 struct drm_device *dev = dev_get_drvdata(d);
608 struct drm_nouveau_private *dev_priv = dev->dev_private;
609 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
610 int ret = -ENODEV;
611 long value;
612
613 if (nouveau_perflvl_wr != 7777)
614 return -EPERM;
615
616 if (kstrtol(buf, 10, &value) == -EINVAL)
617 return -EINVAL;
618
619 if (value < pm->fan.min_duty)
620 value = pm->fan.min_duty;
621 if (value > pm->fan.max_duty)
622 value = pm->fan.max_duty;
623
624 ret = nouveau_pwmfan_set(dev, value);
625 if (ret)
626 return ret;
627
628 return count;
629}
630
631static SENSOR_DEVICE_ATTR(pwm0, S_IRUGO | S_IWUSR,
632 nouveau_hwmon_get_pwm0,
633 nouveau_hwmon_set_pwm0, 0);
634
635static ssize_t
636nouveau_hwmon_get_pwm0_min(struct device *d,
637 struct device_attribute *a, char *buf)
638{
639 struct drm_device *dev = dev_get_drvdata(d);
640 struct drm_nouveau_private *dev_priv = dev->dev_private;
641 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
642
643 return sprintf(buf, "%i\n", pm->fan.min_duty);
644}
645
646static ssize_t
647nouveau_hwmon_set_pwm0_min(struct device *d, struct device_attribute *a,
648 const char *buf, size_t count)
649{
650 struct drm_device *dev = dev_get_drvdata(d);
651 struct drm_nouveau_private *dev_priv = dev->dev_private;
652 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
653 long value;
654
655 if (kstrtol(buf, 10, &value) == -EINVAL)
656 return -EINVAL;
657
658 if (value < 0)
659 value = 0;
660
661 if (pm->fan.max_duty - value < 10)
662 value = pm->fan.max_duty - 10;
663
664 if (value < 10)
665 pm->fan.min_duty = 10;
666 else
667 pm->fan.min_duty = value;
668
669 return count;
670}
671
672static SENSOR_DEVICE_ATTR(pwm0_min, S_IRUGO | S_IWUSR,
673 nouveau_hwmon_get_pwm0_min,
674 nouveau_hwmon_set_pwm0_min, 0);
675
676static ssize_t
677nouveau_hwmon_get_pwm0_max(struct device *d,
678 struct device_attribute *a, char *buf)
679{
680 struct drm_device *dev = dev_get_drvdata(d);
681 struct drm_nouveau_private *dev_priv = dev->dev_private;
682 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
683
684 return sprintf(buf, "%i\n", pm->fan.max_duty);
685}
686
687static ssize_t
688nouveau_hwmon_set_pwm0_max(struct device *d, struct device_attribute *a,
689 const char *buf, size_t count)
690{
691 struct drm_device *dev = dev_get_drvdata(d);
692 struct drm_nouveau_private *dev_priv = dev->dev_private;
693 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
694 long value;
695
696 if (kstrtol(buf, 10, &value) == -EINVAL)
697 return -EINVAL;
698
699 if (value < 0)
700 value = 0;
701
702 if (value - pm->fan.min_duty < 10)
703 value = pm->fan.min_duty + 10;
704
705 if (value > 100)
706 pm->fan.max_duty = 100;
707 else
708 pm->fan.max_duty = value;
709
710 return count;
711}
712
713static SENSOR_DEVICE_ATTR(pwm0_max, S_IRUGO | S_IWUSR,
714 nouveau_hwmon_get_pwm0_max,
715 nouveau_hwmon_set_pwm0_max, 0);
716
717static struct attribute *hwmon_attributes[] = {
718 &sensor_dev_attr_temp1_input.dev_attr.attr,
719 &sensor_dev_attr_temp1_max.dev_attr.attr,
720 &sensor_dev_attr_temp1_crit.dev_attr.attr,
721 &sensor_dev_attr_name.dev_attr.attr,
722 &sensor_dev_attr_update_rate.dev_attr.attr,
723 NULL
724};
725static struct attribute *hwmon_fan_rpm_attributes[] = {
726 &sensor_dev_attr_fan0_input.dev_attr.attr,
727 NULL
728};
729static struct attribute *hwmon_pwm_fan_attributes[] = {
730 &sensor_dev_attr_pwm0.dev_attr.attr,
731 &sensor_dev_attr_pwm0_min.dev_attr.attr,
732 &sensor_dev_attr_pwm0_max.dev_attr.attr,
733 NULL
734};
735
736static const struct attribute_group hwmon_attrgroup = {
737 .attrs = hwmon_attributes,
738};
739static const struct attribute_group hwmon_fan_rpm_attrgroup = {
740 .attrs = hwmon_fan_rpm_attributes,
741};
742static const struct attribute_group hwmon_pwm_fan_attrgroup = {
743 .attrs = hwmon_pwm_fan_attributes,
744};
745#endif
746
747static int
748nouveau_hwmon_init(struct drm_device *dev)
749{
750 struct drm_nouveau_private *dev_priv = dev->dev_private;
751 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
752#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
753 struct device *hwmon_dev;
754 int ret = 0;
755
756 if (!pm->temp_get)
757 return -ENODEV;
758
759 hwmon_dev = hwmon_device_register(&dev->pdev->dev);
760 if (IS_ERR(hwmon_dev)) {
761 ret = PTR_ERR(hwmon_dev);
762 NV_ERROR(dev,
763 "Unable to register hwmon device: %d\n", ret);
764 return ret;
765 }
766 dev_set_drvdata(hwmon_dev, dev);
767
768 /* default sysfs entries */
769 ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
770 if (ret) {
771 if (ret)
772 goto error;
773 }
774
775 /* if the card has a pwm fan */
776 /*XXX: incorrect, need better detection for this, some boards have
777 * the gpio entries for pwm fan control even when there's no
778 * actual fan connected to it... therm table? */
779 if (nouveau_pwmfan_get(dev) >= 0) {
780 ret = sysfs_create_group(&dev->pdev->dev.kobj,
781 &hwmon_pwm_fan_attrgroup);
782 if (ret)
783 goto error;
784 }
785
786 /* if the card can read the fan rpm */
787 if (nouveau_gpio_func_valid(dev, DCB_GPIO_FAN_SENSE)) {
788 ret = sysfs_create_group(&dev->pdev->dev.kobj,
789 &hwmon_fan_rpm_attrgroup);
790 if (ret)
791 goto error;
792 }
793
794 pm->hwmon = hwmon_dev;
795
796 return 0;
797
798error:
799 NV_ERROR(dev, "Unable to create some hwmon sysfs files: %d\n", ret);
800 hwmon_device_unregister(hwmon_dev);
801 pm->hwmon = NULL;
802 return ret;
803#else
804 pm->hwmon = NULL;
805 return 0;
806#endif
807}
808
809static void
810nouveau_hwmon_fini(struct drm_device *dev)
811{
812#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
813 struct drm_nouveau_private *dev_priv = dev->dev_private;
814 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
815
816 if (pm->hwmon) {
817 sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
818 sysfs_remove_group(&dev->pdev->dev.kobj,
819 &hwmon_pwm_fan_attrgroup);
820 sysfs_remove_group(&dev->pdev->dev.kobj,
821 &hwmon_fan_rpm_attrgroup);
822
823 hwmon_device_unregister(pm->hwmon);
824 }
825#endif
826}
827
828#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
829static int
830nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
831{
832 struct drm_nouveau_private *dev_priv =
833 container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
834 struct drm_device *dev = dev_priv->dev;
835 struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
836
837 if (strcmp(entry->device_class, "ac_adapter") == 0) {
838 bool ac = power_supply_is_system_supplied();
839
840 NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
841 nouveau_pm_trigger(dev);
842 }
843
844 return NOTIFY_OK;
845}
846#endif
847
848int
849nouveau_pm_init(struct drm_device *dev)
850{
851 struct drm_nouveau_private *dev_priv = dev->dev_private;
852 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
853 char info[256];
854 int ret, i;
855
856 /* parse aux tables from vbios */
857 nouveau_volt_init(dev);
858 nouveau_temp_init(dev);
859
860 /* determine current ("boot") performance level */
861 ret = nouveau_pm_perflvl_get(dev, &pm->boot);
862 if (ret) {
863 NV_ERROR(dev, "failed to determine boot perflvl\n");
864 return ret;
865 }
866
867 strncpy(pm->boot.name, "boot", 4);
868 strncpy(pm->boot.profile.name, "boot", 4);
869 pm->boot.profile.func = &nouveau_pm_static_profile_func;
870
871 INIT_LIST_HEAD(&pm->profiles);
872 list_add(&pm->boot.profile.head, &pm->profiles);
873
874 pm->profile_ac = &pm->boot.profile;
875 pm->profile_dc = &pm->boot.profile;
876 pm->profile = &pm->boot.profile;
877 pm->cur = &pm->boot;
878
879 /* add performance levels from vbios */
880 nouveau_perf_init(dev);
881
882 /* display available performance levels */
883 NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
884 for (i = 0; i < pm->nr_perflvl; i++) {
885 nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
886 NV_INFO(dev, "%d:%s", pm->perflvl[i].id, info);
887 }
888
889 nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
890 NV_INFO(dev, "c:%s", info);
891
892 /* switch performance levels now if requested */
893 if (nouveau_perflvl != NULL)
894 nouveau_pm_profile_set(dev, nouveau_perflvl);
895
896 /* determine the current fan speed */
897 pm->fan.percent = nouveau_pwmfan_get(dev);
898
899 nouveau_sysfs_init(dev);
900 nouveau_hwmon_init(dev);
901#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
902 pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
903 register_acpi_notifier(&pm->acpi_nb);
904#endif
905
906 return 0;
907}
908
909void
910nouveau_pm_fini(struct drm_device *dev)
911{
912 struct drm_nouveau_private *dev_priv = dev->dev_private;
913 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
914 struct nouveau_pm_profile *profile, *tmp;
915
916 list_for_each_entry_safe(profile, tmp, &pm->profiles, head) {
917 list_del(&profile->head);
918 profile->func->destroy(profile);
919 }
920
921 if (pm->cur != &pm->boot)
922 nouveau_pm_perflvl_set(dev, &pm->boot);
923
924 nouveau_temp_fini(dev);
925 nouveau_perf_fini(dev);
926 nouveau_volt_fini(dev);
927
928#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
929 unregister_acpi_notifier(&pm->acpi_nb);
930#endif
931 nouveau_hwmon_fini(dev);
932 nouveau_sysfs_fini(dev);
933}
934
935void
936nouveau_pm_resume(struct drm_device *dev)
937{
938 struct drm_nouveau_private *dev_priv = dev->dev_private;
939 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
940 struct nouveau_pm_level *perflvl;
941
942 if (!pm->cur || pm->cur == &pm->boot)
943 return;
944
945 perflvl = pm->cur;
946 pm->cur = &pm->boot;
947 nouveau_pm_perflvl_set(dev, perflvl);
948 nouveau_pwmfan_set(dev, pm->fan.percent);
949}