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->voltage.supported && pm->voltage_set && perflvl->volt_min) {
68 ret = pm->voltage_set(dev, perflvl->volt_min);
70 NV_ERROR(dev, "voltage_set %d failed: %d\n",
71 perflvl->volt_min, ret);
75 nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
76 nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
77 nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
78 nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05);
85 nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
87 struct drm_nouveau_private *dev_priv = dev->dev_private;
88 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
89 struct nouveau_pm_level *perflvl = NULL;
91 /* safety precaution, for now */
92 if (nouveau_perflvl_wr != 7777)
98 if (!strncmp(profile, "boot", 4))
101 int pl = simple_strtol(profile, NULL, 10);
104 for (i = 0; i < pm->nr_perflvl; i++) {
105 if (pm->perflvl[i].id == pl) {
106 perflvl = &pm->perflvl[i];
115 NV_INFO(dev, "setting performance level: %s\n", profile);
116 return nouveau_pm_perflvl_set(dev, perflvl);
120 nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
122 struct drm_nouveau_private *dev_priv = dev->dev_private;
123 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
129 memset(perflvl, 0, sizeof(*perflvl));
131 ret = pm->clock_get(dev, PLL_CORE);
135 ret = pm->clock_get(dev, PLL_MEMORY);
137 perflvl->memory = ret;
139 ret = pm->clock_get(dev, PLL_SHADER);
141 perflvl->shader = ret;
143 ret = pm->clock_get(dev, PLL_UNK05);
145 perflvl->unk05 = ret;
147 if (pm->voltage.supported && pm->voltage_get) {
148 ret = pm->voltage_get(dev);
150 perflvl->volt_min = ret;
151 perflvl->volt_max = ret;
159 nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
161 char c[16], s[16], v[32], f[16], t[16];
165 snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);
169 snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
172 if (perflvl->volt_min && perflvl->volt_min != perflvl->volt_max) {
173 snprintf(v, sizeof(v), " voltage %dmV-%dmV",
174 perflvl->volt_min / 1000, perflvl->volt_max / 1000);
176 if (perflvl->volt_min) {
177 snprintf(v, sizeof(v), " voltage %dmV",
178 perflvl->volt_min / 1000);
182 if (perflvl->fanspeed)
183 snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
187 snprintf(t, sizeof(t), " timing %d", perflvl->timing->id);
189 snprintf(ptr, len, "memory %dMHz%s%s%s%s%s\n", perflvl->memory / 1000,
194 nouveau_pm_get_perflvl_info(struct device *d,
195 struct device_attribute *a, char *buf)
197 struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a;
201 snprintf(ptr, len, "%d: ", perflvl->id);
205 nouveau_pm_perflvl_info(perflvl, ptr, len);
210 nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
212 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
213 struct drm_nouveau_private *dev_priv = dev->dev_private;
214 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
215 struct nouveau_pm_level cur;
216 int len = PAGE_SIZE, ret;
220 snprintf(ptr, len, "setting: boot\n");
221 else if (pm->cur == &pm->boot)
222 snprintf(ptr, len, "setting: boot\nc: ");
224 snprintf(ptr, len, "setting: static %d\nc: ", pm->cur->id);
228 ret = nouveau_pm_perflvl_get(dev, &cur);
230 nouveau_pm_perflvl_info(&cur, ptr, len);
235 nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
236 const char *buf, size_t count)
238 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
241 ret = nouveau_pm_profile_set(dev, buf);
247 static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
248 nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
251 nouveau_sysfs_init(struct drm_device *dev)
253 struct drm_nouveau_private *dev_priv = dev->dev_private;
254 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
255 struct device *d = &dev->pdev->dev;
258 ret = device_create_file(d, &dev_attr_performance_level);
262 for (i = 0; i < pm->nr_perflvl; i++) {
263 struct nouveau_pm_level *perflvl = &pm->perflvl[i];
265 perflvl->dev_attr.attr.name = perflvl->name;
266 perflvl->dev_attr.attr.mode = S_IRUGO;
267 perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
268 perflvl->dev_attr.store = NULL;
269 sysfs_attr_init(&perflvl->dev_attr.attr);
271 ret = device_create_file(d, &perflvl->dev_attr);
273 NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
275 perflvl->dev_attr.attr.name = NULL;
276 nouveau_pm_fini(dev);
285 nouveau_sysfs_fini(struct drm_device *dev)
287 struct drm_nouveau_private *dev_priv = dev->dev_private;
288 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
289 struct device *d = &dev->pdev->dev;
292 device_remove_file(d, &dev_attr_performance_level);
293 for (i = 0; i < pm->nr_perflvl; i++) {
294 struct nouveau_pm_level *pl = &pm->perflvl[i];
296 if (!pl->dev_attr.attr.name)
299 device_remove_file(d, &pl->dev_attr);
305 nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
307 struct drm_device *dev = dev_get_drvdata(d);
308 struct drm_nouveau_private *dev_priv = dev->dev_private;
309 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
311 return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
313 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
317 nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
319 struct drm_device *dev = dev_get_drvdata(d);
320 struct drm_nouveau_private *dev_priv = dev->dev_private;
321 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
322 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
324 return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
327 nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
328 const char *buf, size_t count)
330 struct drm_device *dev = dev_get_drvdata(d);
331 struct drm_nouveau_private *dev_priv = dev->dev_private;
332 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
333 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
336 if (strict_strtol(buf, 10, &value) == -EINVAL)
339 temp->down_clock = value/1000;
341 nouveau_temp_safety_checks(dev);
345 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
346 nouveau_hwmon_set_max_temp,
350 nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
353 struct drm_device *dev = dev_get_drvdata(d);
354 struct drm_nouveau_private *dev_priv = dev->dev_private;
355 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
356 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
358 return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
361 nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
365 struct drm_device *dev = dev_get_drvdata(d);
366 struct drm_nouveau_private *dev_priv = dev->dev_private;
367 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
368 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
371 if (strict_strtol(buf, 10, &value) == -EINVAL)
374 temp->critical = value/1000;
376 nouveau_temp_safety_checks(dev);
380 static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
381 nouveau_hwmon_critical_temp,
382 nouveau_hwmon_set_critical_temp,
385 static ssize_t nouveau_hwmon_show_name(struct device *dev,
386 struct device_attribute *attr,
389 return sprintf(buf, "nouveau\n");
391 static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
393 static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
394 struct device_attribute *attr,
397 return sprintf(buf, "1000\n");
399 static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
400 nouveau_hwmon_show_update_rate,
403 static struct attribute *hwmon_attributes[] = {
404 &sensor_dev_attr_temp1_input.dev_attr.attr,
405 &sensor_dev_attr_temp1_max.dev_attr.attr,
406 &sensor_dev_attr_temp1_crit.dev_attr.attr,
407 &sensor_dev_attr_name.dev_attr.attr,
408 &sensor_dev_attr_update_rate.dev_attr.attr,
412 static const struct attribute_group hwmon_attrgroup = {
413 .attrs = hwmon_attributes,
418 nouveau_hwmon_init(struct drm_device *dev)
421 struct drm_nouveau_private *dev_priv = dev->dev_private;
422 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
423 struct device *hwmon_dev;
429 hwmon_dev = hwmon_device_register(&dev->pdev->dev);
430 if (IS_ERR(hwmon_dev)) {
431 ret = PTR_ERR(hwmon_dev);
433 "Unable to register hwmon device: %d\n", ret);
436 dev_set_drvdata(hwmon_dev, dev);
437 ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
440 "Unable to create hwmon sysfs file: %d\n", ret);
441 hwmon_device_unregister(hwmon_dev);
445 pm->hwmon = hwmon_dev;
451 nouveau_hwmon_fini(struct drm_device *dev)
454 struct drm_nouveau_private *dev_priv = dev->dev_private;
455 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
458 sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
459 hwmon_device_unregister(pm->hwmon);
464 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
466 nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
468 struct drm_nouveau_private *dev_priv =
469 container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
470 struct drm_device *dev = dev_priv->dev;
471 struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
473 if (strcmp(entry->device_class, "ac_adapter") == 0) {
474 bool ac = power_supply_is_system_supplied();
476 NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
484 nouveau_pm_init(struct drm_device *dev)
486 struct drm_nouveau_private *dev_priv = dev->dev_private;
487 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
491 nouveau_mem_timing_init(dev);
492 nouveau_volt_init(dev);
493 nouveau_perf_init(dev);
494 nouveau_temp_init(dev);
496 NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
497 for (i = 0; i < pm->nr_perflvl; i++) {
498 nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
499 NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info);
502 /* determine current ("boot") performance level */
503 ret = nouveau_pm_perflvl_get(dev, &pm->boot);
505 strncpy(pm->boot.name, "boot", 4);
508 nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
509 NV_INFO(dev, "c: %s", info);
512 /* switch performance levels now if requested */
513 if (nouveau_perflvl != NULL) {
514 ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
516 NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
517 nouveau_perflvl, ret);
521 nouveau_sysfs_init(dev);
522 nouveau_hwmon_init(dev);
523 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
524 pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
525 register_acpi_notifier(&pm->acpi_nb);
532 nouveau_pm_fini(struct drm_device *dev)
534 struct drm_nouveau_private *dev_priv = dev->dev_private;
535 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
537 if (pm->cur != &pm->boot)
538 nouveau_pm_perflvl_set(dev, &pm->boot);
540 nouveau_temp_fini(dev);
541 nouveau_perf_fini(dev);
542 nouveau_volt_fini(dev);
543 nouveau_mem_timing_fini(dev);
545 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
546 unregister_acpi_notifier(&pm->acpi_nb);
548 nouveau_hwmon_fini(dev);
549 nouveau_sysfs_fini(dev);
553 nouveau_pm_resume(struct drm_device *dev)
555 struct drm_nouveau_private *dev_priv = dev->dev_private;
556 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
557 struct nouveau_pm_level *perflvl;
559 if (!pm->cur || pm->cur == &pm->boot)
564 nouveau_pm_perflvl_set(dev, perflvl);