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);
76 nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
77 nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
78 nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
79 nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05);
87 nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
89 struct drm_nouveau_private *dev_priv = dev->dev_private;
90 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
91 struct nouveau_pm_level *perflvl = NULL;
93 /* safety precaution, for now */
94 if (nouveau_perflvl_wr != 7777)
97 if (!strncmp(profile, "boot", 4))
100 int pl = simple_strtol(profile, NULL, 10);
103 for (i = 0; i < pm->nr_perflvl; i++) {
104 if (pm->perflvl[i].id == pl) {
105 perflvl = &pm->perflvl[i];
114 NV_INFO(dev, "setting performance level: %s\n", profile);
115 return nouveau_pm_perflvl_set(dev, perflvl);
119 nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
121 struct drm_nouveau_private *dev_priv = dev->dev_private;
122 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
125 memset(perflvl, 0, sizeof(*perflvl));
128 ret = pm->clock_get(dev, PLL_CORE);
132 ret = pm->clock_get(dev, PLL_MEMORY);
134 perflvl->memory = ret;
136 ret = pm->clock_get(dev, PLL_SHADER);
138 perflvl->shader = ret;
140 ret = pm->clock_get(dev, PLL_UNK05);
142 perflvl->unk05 = ret;
145 if (pm->voltage.supported && pm->voltage_get) {
146 ret = pm->voltage_get(dev);
148 perflvl->volt_min = ret;
149 perflvl->volt_max = ret;
157 nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
159 char c[16], s[16], v[32], f[16], t[16], m[16];
163 snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);
167 snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
171 snprintf(m, sizeof(m), " memory %dMHz", perflvl->memory / 1000);
174 if (perflvl->volt_min && perflvl->volt_min != perflvl->volt_max) {
175 snprintf(v, sizeof(v), " voltage %dmV-%dmV",
176 perflvl->volt_min / 1000, perflvl->volt_max / 1000);
178 if (perflvl->volt_min) {
179 snprintf(v, sizeof(v), " voltage %dmV",
180 perflvl->volt_min / 1000);
184 if (perflvl->fanspeed)
185 snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
189 snprintf(t, sizeof(t), " timing %d", perflvl->timing->id);
191 snprintf(ptr, len, "%s%s%s%s%s%s\n", c, s, m, t, v, f);
195 nouveau_pm_get_perflvl_info(struct device *d,
196 struct device_attribute *a, char *buf)
198 struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a;
202 snprintf(ptr, len, "%d:", perflvl->id);
206 nouveau_pm_perflvl_info(perflvl, ptr, len);
211 nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
213 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
214 struct drm_nouveau_private *dev_priv = dev->dev_private;
215 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
216 struct nouveau_pm_level cur;
217 int len = PAGE_SIZE, ret;
221 snprintf(ptr, len, "setting: boot\n");
222 else if (pm->cur == &pm->boot)
223 snprintf(ptr, len, "setting: boot\nc:");
225 snprintf(ptr, len, "setting: static %d\nc:", pm->cur->id);
229 ret = nouveau_pm_perflvl_get(dev, &cur);
231 nouveau_pm_perflvl_info(&cur, ptr, len);
236 nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
237 const char *buf, size_t count)
239 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
242 ret = nouveau_pm_profile_set(dev, buf);
248 static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
249 nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
252 nouveau_sysfs_init(struct drm_device *dev)
254 struct drm_nouveau_private *dev_priv = dev->dev_private;
255 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
256 struct device *d = &dev->pdev->dev;
259 ret = device_create_file(d, &dev_attr_performance_level);
263 for (i = 0; i < pm->nr_perflvl; i++) {
264 struct nouveau_pm_level *perflvl = &pm->perflvl[i];
266 perflvl->dev_attr.attr.name = perflvl->name;
267 perflvl->dev_attr.attr.mode = S_IRUGO;
268 perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
269 perflvl->dev_attr.store = NULL;
270 sysfs_attr_init(&perflvl->dev_attr.attr);
272 ret = device_create_file(d, &perflvl->dev_attr);
274 NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
276 perflvl->dev_attr.attr.name = NULL;
277 nouveau_pm_fini(dev);
286 nouveau_sysfs_fini(struct drm_device *dev)
288 struct drm_nouveau_private *dev_priv = dev->dev_private;
289 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
290 struct device *d = &dev->pdev->dev;
293 device_remove_file(d, &dev_attr_performance_level);
294 for (i = 0; i < pm->nr_perflvl; i++) {
295 struct nouveau_pm_level *pl = &pm->perflvl[i];
297 if (!pl->dev_attr.attr.name)
300 device_remove_file(d, &pl->dev_attr);
306 nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
308 struct drm_device *dev = dev_get_drvdata(d);
309 struct drm_nouveau_private *dev_priv = dev->dev_private;
310 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
312 return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
314 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
318 nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
320 struct drm_device *dev = dev_get_drvdata(d);
321 struct drm_nouveau_private *dev_priv = dev->dev_private;
322 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
323 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
325 return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
328 nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
329 const char *buf, size_t count)
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;
334 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
337 if (strict_strtol(buf, 10, &value) == -EINVAL)
340 temp->down_clock = value/1000;
342 nouveau_temp_safety_checks(dev);
346 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
347 nouveau_hwmon_set_max_temp,
351 nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
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;
359 return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
362 nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
366 struct drm_device *dev = dev_get_drvdata(d);
367 struct drm_nouveau_private *dev_priv = dev->dev_private;
368 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
369 struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
372 if (strict_strtol(buf, 10, &value) == -EINVAL)
375 temp->critical = value/1000;
377 nouveau_temp_safety_checks(dev);
381 static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
382 nouveau_hwmon_critical_temp,
383 nouveau_hwmon_set_critical_temp,
386 static ssize_t nouveau_hwmon_show_name(struct device *dev,
387 struct device_attribute *attr,
390 return sprintf(buf, "nouveau\n");
392 static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
394 static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
395 struct device_attribute *attr,
398 return sprintf(buf, "1000\n");
400 static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
401 nouveau_hwmon_show_update_rate,
404 static struct attribute *hwmon_attributes[] = {
405 &sensor_dev_attr_temp1_input.dev_attr.attr,
406 &sensor_dev_attr_temp1_max.dev_attr.attr,
407 &sensor_dev_attr_temp1_crit.dev_attr.attr,
408 &sensor_dev_attr_name.dev_attr.attr,
409 &sensor_dev_attr_update_rate.dev_attr.attr,
413 static const struct attribute_group hwmon_attrgroup = {
414 .attrs = hwmon_attributes,
419 nouveau_hwmon_init(struct drm_device *dev)
422 struct drm_nouveau_private *dev_priv = dev->dev_private;
423 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
424 struct device *hwmon_dev;
430 hwmon_dev = hwmon_device_register(&dev->pdev->dev);
431 if (IS_ERR(hwmon_dev)) {
432 ret = PTR_ERR(hwmon_dev);
434 "Unable to register hwmon device: %d\n", ret);
437 dev_set_drvdata(hwmon_dev, dev);
438 ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
441 "Unable to create hwmon sysfs file: %d\n", ret);
442 hwmon_device_unregister(hwmon_dev);
446 pm->hwmon = hwmon_dev;
452 nouveau_hwmon_fini(struct drm_device *dev)
455 struct drm_nouveau_private *dev_priv = dev->dev_private;
456 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
459 sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
460 hwmon_device_unregister(pm->hwmon);
465 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
467 nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
469 struct drm_nouveau_private *dev_priv =
470 container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
471 struct drm_device *dev = dev_priv->dev;
472 struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
474 if (strcmp(entry->device_class, "ac_adapter") == 0) {
475 bool ac = power_supply_is_system_supplied();
477 NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
485 nouveau_pm_init(struct drm_device *dev)
487 struct drm_nouveau_private *dev_priv = dev->dev_private;
488 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
492 nouveau_mem_timing_init(dev);
493 nouveau_volt_init(dev);
494 nouveau_perf_init(dev);
495 nouveau_temp_init(dev);
497 NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
498 for (i = 0; i < pm->nr_perflvl; i++) {
499 nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
500 NV_INFO(dev, "%d:%s", pm->perflvl[i].id, info);
503 /* determine current ("boot") performance level */
504 ret = nouveau_pm_perflvl_get(dev, &pm->boot);
506 strncpy(pm->boot.name, "boot", 4);
509 nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
510 NV_INFO(dev, "c:%s", info);
513 /* switch performance levels now if requested */
514 if (nouveau_perflvl != NULL) {
515 ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
517 NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
518 nouveau_perflvl, ret);
522 nouveau_sysfs_init(dev);
523 nouveau_hwmon_init(dev);
524 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
525 pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
526 register_acpi_notifier(&pm->acpi_nb);
533 nouveau_pm_fini(struct drm_device *dev)
535 struct drm_nouveau_private *dev_priv = dev->dev_private;
536 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
538 if (pm->cur != &pm->boot)
539 nouveau_pm_perflvl_set(dev, &pm->boot);
541 nouveau_temp_fini(dev);
542 nouveau_perf_fini(dev);
543 nouveau_volt_fini(dev);
544 nouveau_mem_timing_fini(dev);
546 #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
547 unregister_acpi_notifier(&pm->acpi_nb);
549 nouveau_hwmon_fini(dev);
550 nouveau_sysfs_fini(dev);
554 nouveau_pm_resume(struct drm_device *dev)
556 struct drm_nouveau_private *dev_priv = dev->dev_private;
557 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
558 struct nouveau_pm_level *perflvl;
560 if (!pm->cur || pm->cur == &pm->boot)
565 nouveau_pm_perflvl_set(dev, perflvl);