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* Copyright 2010 Red Hat Inc.
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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#include "nouveau_drv.h"
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#include "nouveau_pm.h"
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#include <linux/acpi.h>
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#include <linux/power_supply.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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nouveau_pm_clock_set(struct drm_device *dev, struct nouveau_pm_level *perflvl,
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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pre_state = pm->clock_pre(dev, perflvl, id, khz);
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if (IS_ERR(pre_state))
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return PTR_ERR(pre_state);
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pm->clock_set(dev, pre_state);
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nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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if (perflvl == pm->cur)
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if (pm->voltage.supported && pm->voltage_set && perflvl->volt_min) {
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ret = pm->voltage_set(dev, perflvl->volt_min);
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NV_ERROR(dev, "voltage_set %d failed: %d\n",
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perflvl->volt_min, ret);
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void *state = pm->clocks_pre(dev, perflvl);
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return PTR_ERR(state);
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pm->clocks_set(dev, state);
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nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
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nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
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nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
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nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05);
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nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_level *perflvl = NULL;
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/* safety precaution, for now */
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if (nouveau_perflvl_wr != 7777)
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if (!strncmp(profile, "boot", 4))
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int pl = simple_strtol(profile, NULL, 10);
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for (i = 0; i < pm->nr_perflvl; i++) {
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if (pm->perflvl[i].id == pl) {
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perflvl = &pm->perflvl[i];
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NV_INFO(dev, "setting performance level: %s\n", profile);
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return nouveau_pm_perflvl_set(dev, perflvl);
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nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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memset(perflvl, 0, sizeof(*perflvl));
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if (pm->clocks_get) {
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ret = pm->clocks_get(dev, perflvl);
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ret = pm->clock_get(dev, PLL_CORE);
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ret = pm->clock_get(dev, PLL_MEMORY);
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perflvl->memory = ret;
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ret = pm->clock_get(dev, PLL_SHADER);
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perflvl->shader = ret;
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ret = pm->clock_get(dev, PLL_UNK05);
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perflvl->unk05 = ret;
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if (pm->voltage.supported && pm->voltage_get) {
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ret = pm->voltage_get(dev);
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perflvl->volt_min = ret;
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perflvl->volt_max = ret;
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nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
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char c[16], s[16], v[32], f[16], t[16], m[16];
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snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);
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snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
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snprintf(m, sizeof(m), " memory %dMHz", perflvl->memory / 1000);
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if (perflvl->volt_min && perflvl->volt_min != perflvl->volt_max) {
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snprintf(v, sizeof(v), " voltage %dmV-%dmV",
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perflvl->volt_min / 1000, perflvl->volt_max / 1000);
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if (perflvl->volt_min) {
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snprintf(v, sizeof(v), " voltage %dmV",
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perflvl->volt_min / 1000);
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if (perflvl->fanspeed)
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snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
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snprintf(t, sizeof(t), " timing %d", perflvl->timing->id);
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snprintf(ptr, len, "%s%s%s%s%s%s\n", c, s, m, t, v, f);
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nouveau_pm_get_perflvl_info(struct device *d,
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struct device_attribute *a, char *buf)
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struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a;
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snprintf(ptr, len, "%d:", perflvl->id);
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nouveau_pm_perflvl_info(perflvl, ptr, len);
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nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
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struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_level cur;
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int len = PAGE_SIZE, ret;
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snprintf(ptr, len, "setting: boot\n");
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else if (pm->cur == &pm->boot)
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snprintf(ptr, len, "setting: boot\nc:");
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snprintf(ptr, len, "setting: static %d\nc:", pm->cur->id);
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ret = nouveau_pm_perflvl_get(dev, &cur);
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nouveau_pm_perflvl_info(&cur, ptr, len);
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nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
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const char *buf, size_t count)
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struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
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ret = nouveau_pm_profile_set(dev, buf);
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static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
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nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
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nouveau_sysfs_init(struct drm_device *dev)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct device *d = &dev->pdev->dev;
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ret = device_create_file(d, &dev_attr_performance_level);
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for (i = 0; i < pm->nr_perflvl; i++) {
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struct nouveau_pm_level *perflvl = &pm->perflvl[i];
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perflvl->dev_attr.attr.name = perflvl->name;
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perflvl->dev_attr.attr.mode = S_IRUGO;
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perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
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perflvl->dev_attr.store = NULL;
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sysfs_attr_init(&perflvl->dev_attr.attr);
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ret = device_create_file(d, &perflvl->dev_attr);
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NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
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perflvl->dev_attr.attr.name = NULL;
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nouveau_pm_fini(dev);
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nouveau_sysfs_fini(struct drm_device *dev)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct device *d = &dev->pdev->dev;
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device_remove_file(d, &dev_attr_performance_level);
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for (i = 0; i < pm->nr_perflvl; i++) {
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struct nouveau_pm_level *pl = &pm->perflvl[i];
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if (!pl->dev_attr.attr.name)
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device_remove_file(d, &pl->dev_attr);
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#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
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nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
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struct drm_device *dev = dev_get_drvdata(d);
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
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static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
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nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
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struct drm_device *dev = dev_get_drvdata(d);
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
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return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
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nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
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const char *buf, size_t count)
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struct drm_device *dev = dev_get_drvdata(d);
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
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if (strict_strtol(buf, 10, &value) == -EINVAL)
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temp->down_clock = value/1000;
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nouveau_temp_safety_checks(dev);
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static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
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nouveau_hwmon_set_max_temp,
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nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
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struct drm_device *dev = dev_get_drvdata(d);
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
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return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
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nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
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struct drm_device *dev = dev_get_drvdata(d);
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
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if (strict_strtol(buf, 10, &value) == -EINVAL)
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temp->critical = value/1000;
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nouveau_temp_safety_checks(dev);
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static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
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nouveau_hwmon_critical_temp,
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nouveau_hwmon_set_critical_temp,
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static ssize_t nouveau_hwmon_show_name(struct device *dev,
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struct device_attribute *attr,
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return sprintf(buf, "nouveau\n");
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static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
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static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
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struct device_attribute *attr,
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return sprintf(buf, "1000\n");
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static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
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nouveau_hwmon_show_update_rate,
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static struct attribute *hwmon_attributes[] = {
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp1_max.dev_attr.attr,
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&sensor_dev_attr_temp1_crit.dev_attr.attr,
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&sensor_dev_attr_name.dev_attr.attr,
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&sensor_dev_attr_update_rate.dev_attr.attr,
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static const struct attribute_group hwmon_attrgroup = {
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.attrs = hwmon_attributes,
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nouveau_hwmon_init(struct drm_device *dev)
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#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct device *hwmon_dev;
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hwmon_dev = hwmon_device_register(&dev->pdev->dev);
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if (IS_ERR(hwmon_dev)) {
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ret = PTR_ERR(hwmon_dev);
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"Unable to register hwmon device: %d\n", ret);
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dev_set_drvdata(hwmon_dev, dev);
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ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
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"Unable to create hwmon sysfs file: %d\n", ret);
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hwmon_device_unregister(hwmon_dev);
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pm->hwmon = hwmon_dev;
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nouveau_hwmon_fini(struct drm_device *dev)
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#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
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hwmon_device_unregister(pm->hwmon);
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#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
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nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
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struct drm_nouveau_private *dev_priv =
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container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
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struct drm_device *dev = dev_priv->dev;
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struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
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if (strcmp(entry->device_class, "ac_adapter") == 0) {
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bool ac = power_supply_is_system_supplied();
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NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
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nouveau_pm_init(struct drm_device *dev)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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nouveau_mem_timing_init(dev);
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nouveau_volt_init(dev);
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nouveau_perf_init(dev);
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nouveau_temp_init(dev);
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NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
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for (i = 0; i < pm->nr_perflvl; i++) {
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nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
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NV_INFO(dev, "%d:%s", pm->perflvl[i].id, info);
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/* determine current ("boot") performance level */
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ret = nouveau_pm_perflvl_get(dev, &pm->boot);
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strncpy(pm->boot.name, "boot", 4);
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nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
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NV_INFO(dev, "c:%s", info);
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/* switch performance levels now if requested */
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if (nouveau_perflvl != NULL) {
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ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
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NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
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nouveau_perflvl, ret);
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nouveau_sysfs_init(dev);
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nouveau_hwmon_init(dev);
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#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
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pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
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register_acpi_notifier(&pm->acpi_nb);
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nouveau_pm_fini(struct drm_device *dev)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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if (pm->cur != &pm->boot)
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nouveau_pm_perflvl_set(dev, &pm->boot);
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nouveau_temp_fini(dev);
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nouveau_perf_fini(dev);
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nouveau_volt_fini(dev);
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nouveau_mem_timing_fini(dev);
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#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
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unregister_acpi_notifier(&pm->acpi_nb);
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nouveau_hwmon_fini(dev);
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nouveau_sysfs_fini(dev);
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nouveau_pm_resume(struct drm_device *dev)
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_level *perflvl;
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if (!pm->cur || pm->cur == &pm->boot)
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nouveau_pm_perflvl_set(dev, perflvl);