2 * Copyright 2010 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
27 #include "nouveau_drv.h"
28 #include "nouveau_pm.h"
31 #include <linux/acpi.h>
33 #include <linux/power_supply.h>
34 #include <linux/hwmon.h>
35 #include <linux/hwmon-sysfs.h>
38 nouveau_pm_clock_set(struct drm_device *dev, struct nouveau_pm_level *perflvl,
41 struct drm_nouveau_private *dev_priv = dev->dev_private;
42 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
48 pre_state = pm->clock_pre(dev, perflvl, id, khz);
49 if (IS_ERR(pre_state))
50 return PTR_ERR(pre_state);
53 pm->clock_set(dev, pre_state);
58 nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl)
60 struct drm_nouveau_private *dev_priv = dev->dev_private;
61 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
64 if (perflvl == pm->cur)
67 if (pm->fanspeed_set && perflvl->fanspeed) {
68 ret = pm->fanspeed_set(dev, perflvl->fanspeed);
70 NV_ERROR(dev, "set fanspeed failed: %d\n", ret);
73 if (pm->voltage.supported && pm->voltage_set && perflvl->volt_min) {
74 ret = pm->voltage_set(dev, perflvl->volt_min);
76 NV_ERROR(dev, "voltage_set %d failed: %d\n",
77 perflvl->volt_min, ret);
82 void *state = pm->clocks_pre(dev, perflvl);
84 return PTR_ERR(state);
85 pm->clocks_set(dev, state);
88 nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
89 nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
90 nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
91 nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05);
99 nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
101 struct drm_nouveau_private *dev_priv = dev->dev_private;
102 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
103 struct nouveau_pm_level *perflvl = NULL;
105 /* safety precaution, for now */
106 if (nouveau_perflvl_wr != 7777)
109 if (!strncmp(profile, "boot", 4))
112 int pl = simple_strtol(profile, NULL, 10);
115 for (i = 0; i < pm->nr_perflvl; i++) {
116 if (pm->perflvl[i].id == pl) {
117 perflvl = &pm->perflvl[i];
126 NV_INFO(dev, "setting performance level: %s\n", profile);
127 return nouveau_pm_perflvl_set(dev, perflvl);
131 nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
133 struct drm_nouveau_private *dev_priv = dev->dev_private;
134 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
137 memset(perflvl, 0, sizeof(*perflvl));
139 if (pm->clocks_get) {
140 ret = pm->clocks_get(dev, perflvl);
145 ret = pm->clock_get(dev, PLL_CORE);
149 ret = pm->clock_get(dev, PLL_MEMORY);
151 perflvl->memory = ret;
153 ret = pm->clock_get(dev, PLL_SHADER);
155 perflvl->shader = ret;
157 ret = pm->clock_get(dev, PLL_UNK05);
159 perflvl->unk05 = ret;
162 if (pm->voltage.supported && pm->voltage_get) {
163 ret = pm->voltage_get(dev);
165 perflvl->volt_min = ret;
166 perflvl->volt_max = ret;
170 if (pm->fanspeed_get) {
171 ret = pm->fanspeed_get(dev);
173 perflvl->fanspeed = ret;
180 nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
182 char c[16], s[16], v[32], f[16], t[16], m[16];
186 snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);
190 snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
194 snprintf(m, sizeof(m), " memory %dMHz", perflvl->memory / 1000);
197 if (perflvl->volt_min && perflvl->volt_min != perflvl->volt_max) {
198 snprintf(v, sizeof(v), " voltage %dmV-%dmV",
199 perflvl->volt_min / 1000, perflvl->volt_max / 1000);
201 if (perflvl->volt_min) {
202 snprintf(v, sizeof(v), " voltage %dmV",
203 perflvl->volt_min / 1000);
207 if (perflvl->fanspeed)
208 snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
212 snprintf(t, sizeof(t), " timing %d", perflvl->timing->id);
214 snprintf(ptr, len, "%s%s%s%s%s%s\n", c, s, m, t, v, f);
218 nouveau_pm_get_perflvl_info(struct device *d,
219 struct device_attribute *a, char *buf)
221 struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a;
225 snprintf(ptr, len, "%d:", perflvl->id);
229 nouveau_pm_perflvl_info(perflvl, ptr, len);
234 nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
236 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
237 struct drm_nouveau_private *dev_priv = dev->dev_private;
238 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
239 struct nouveau_pm_level cur;
240 int len = PAGE_SIZE, ret;
244 snprintf(ptr, len, "setting: boot\n");
245 else if (pm->cur == &pm->boot)
246 snprintf(ptr, len, "setting: boot\nc:");
248 snprintf(ptr, len, "setting: static %d\nc:", pm->cur->id);
252 ret = nouveau_pm_perflvl_get(dev, &cur);
254 nouveau_pm_perflvl_info(&cur, ptr, len);
259 nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
260 const char *buf, size_t count)
262 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
265 ret = nouveau_pm_profile_set(dev, buf);
271 static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
272 nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
275 nouveau_sysfs_init(struct drm_device *dev)
277 struct drm_nouveau_private *dev_priv = dev->dev_private;
278 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
279 struct device *d = &dev->pdev->dev;
282 ret = device_create_file(d, &dev_attr_performance_level);
286 for (i = 0; i < pm->nr_perflvl; i++) {
287 struct nouveau_pm_level *perflvl = &pm->perflvl[i];
289 perflvl->dev_attr.attr.name = perflvl->name;
290 perflvl->dev_attr.attr.mode = S_IRUGO;
291 perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
292 perflvl->dev_attr.store = NULL;
293 sysfs_attr_init(&perflvl->dev_attr.attr);
295 ret = device_create_file(d, &perflvl->dev_attr);
297 NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
299 perflvl->dev_attr.attr.name = NULL;
300 nouveau_pm_fini(dev);
309 nouveau_sysfs_fini(struct drm_device *dev)
311 struct drm_nouveau_private *dev_priv = dev->dev_private;
312 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
313 struct device *d = &dev->pdev->dev;
316 device_remove_file(d, &dev_attr_performance_level);
317 for (i = 0; i < pm->nr_perflvl; i++) {
318 struct nouveau_pm_level *pl = &pm->perflvl[i];
320 if (!pl->dev_attr.attr.name)
323 device_remove_file(d, &pl->dev_attr);
327 #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
329 nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
331 struct drm_device *dev = dev_get_drvdata(d);
332 struct drm_nouveau_private *dev_priv = dev->dev_private;
333 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
335 return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
337 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
341 nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
343 struct drm_device *dev = dev_get_drvdata(d);
344 struct drm_nouveau_private *dev_priv = dev->dev_private;
345 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
346 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
348 return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
351 nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
352 const char *buf, size_t count)
354 struct drm_device *dev = dev_get_drvdata(d);
355 struct drm_nouveau_private *dev_priv = dev->dev_private;
356 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
357 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
360 if (strict_strtol(buf, 10, &value) == -EINVAL)
363 temp->down_clock = value/1000;
365 nouveau_temp_safety_checks(dev);
369 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
370 nouveau_hwmon_set_max_temp,
374 nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
377 struct drm_device *dev = dev_get_drvdata(d);
378 struct drm_nouveau_private *dev_priv = dev->dev_private;
379 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
380 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
382 return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
385 nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
389 struct drm_device *dev = dev_get_drvdata(d);
390 struct drm_nouveau_private *dev_priv = dev->dev_private;
391 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
392 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
395 if (strict_strtol(buf, 10, &value) == -EINVAL)
398 temp->critical = value/1000;
400 nouveau_temp_safety_checks(dev);
404 static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
405 nouveau_hwmon_critical_temp,
406 nouveau_hwmon_set_critical_temp,
409 static ssize_t nouveau_hwmon_show_name(struct device *dev,
410 struct device_attribute *attr,
413 return sprintf(buf, "nouveau\n");
415 static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
417 static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
418 struct device_attribute *attr,
421 return sprintf(buf, "1000\n");
423 static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
424 nouveau_hwmon_show_update_rate,
427 static struct attribute *hwmon_attributes[] = {
428 &sensor_dev_attr_temp1_input.dev_attr.attr,
429 &sensor_dev_attr_temp1_max.dev_attr.attr,
430 &sensor_dev_attr_temp1_crit.dev_attr.attr,
431 &sensor_dev_attr_name.dev_attr.attr,
432 &sensor_dev_attr_update_rate.dev_attr.attr,
436 static const struct attribute_group hwmon_attrgroup = {
437 .attrs = hwmon_attributes,
442 nouveau_hwmon_init(struct drm_device *dev)
444 #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
445 struct drm_nouveau_private *dev_priv = dev->dev_private;
446 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
447 struct device *hwmon_dev;
453 hwmon_dev = hwmon_device_register(&dev->pdev->dev);
454 if (IS_ERR(hwmon_dev)) {
455 ret = PTR_ERR(hwmon_dev);
457 "Unable to register hwmon device: %d\n", ret);
460 dev_set_drvdata(hwmon_dev, dev);
461 ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
464 "Unable to create hwmon sysfs file: %d\n", ret);
465 hwmon_device_unregister(hwmon_dev);
469 pm->hwmon = hwmon_dev;
475 nouveau_hwmon_fini(struct drm_device *dev)
477 #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
478 struct drm_nouveau_private *dev_priv = dev->dev_private;
479 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
482 sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
483 hwmon_device_unregister(pm->hwmon);
488 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
490 nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
492 struct drm_nouveau_private *dev_priv =
493 container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
494 struct drm_device *dev = dev_priv->dev;
495 struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
497 if (strcmp(entry->device_class, "ac_adapter") == 0) {
498 bool ac = power_supply_is_system_supplied();
500 NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
508 nouveau_pm_init(struct drm_device *dev)
510 struct drm_nouveau_private *dev_priv = dev->dev_private;
511 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
515 nouveau_mem_timing_init(dev);
516 nouveau_volt_init(dev);
517 nouveau_perf_init(dev);
518 nouveau_temp_init(dev);
520 NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
521 for (i = 0; i < pm->nr_perflvl; i++) {
522 nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
523 NV_INFO(dev, "%d:%s", pm->perflvl[i].id, info);
526 /* determine current ("boot") performance level */
527 ret = nouveau_pm_perflvl_get(dev, &pm->boot);
529 strncpy(pm->boot.name, "boot", 4);
532 nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
533 NV_INFO(dev, "c:%s", info);
536 /* switch performance levels now if requested */
537 if (nouveau_perflvl != NULL) {
538 ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
540 NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
541 nouveau_perflvl, ret);
545 nouveau_sysfs_init(dev);
546 nouveau_hwmon_init(dev);
547 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
548 pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
549 register_acpi_notifier(&pm->acpi_nb);
556 nouveau_pm_fini(struct drm_device *dev)
558 struct drm_nouveau_private *dev_priv = dev->dev_private;
559 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
561 if (pm->cur != &pm->boot)
562 nouveau_pm_perflvl_set(dev, &pm->boot);
564 nouveau_temp_fini(dev);
565 nouveau_perf_fini(dev);
566 nouveau_volt_fini(dev);
567 nouveau_mem_timing_fini(dev);
569 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
570 unregister_acpi_notifier(&pm->acpi_nb);
572 nouveau_hwmon_fini(dev);
573 nouveau_sysfs_fini(dev);
577 nouveau_pm_resume(struct drm_device *dev)
579 struct drm_nouveau_private *dev_priv = dev->dev_private;
580 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
581 struct nouveau_pm_level *perflvl;
583 if (!pm->cur || pm->cur == &pm->boot)
588 nouveau_pm_perflvl_set(dev, perflvl);