| /* |
| * Copyright 2010 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Ben Skeggs |
| */ |
| |
| #include "drmP.h" |
| |
| #include "nouveau_drv.h" |
| #include "nouveau_pm.h" |
| |
| #ifdef CONFIG_ACPI |
| #include <linux/acpi.h> |
| #endif |
| #include <linux/power_supply.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| |
| static int |
| nouveau_pm_clock_set(struct drm_device *dev, struct nouveau_pm_level *perflvl, |
| u8 id, u32 khz) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| void *pre_state; |
| |
| if (khz == 0) |
| return 0; |
| |
| pre_state = pm->clock_pre(dev, perflvl, id, khz); |
| if (IS_ERR(pre_state)) |
| return PTR_ERR(pre_state); |
| |
| if (pre_state) |
| pm->clock_set(dev, pre_state); |
| return 0; |
| } |
| |
| static int |
| nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| int ret; |
| |
| if (perflvl == pm->cur) |
| return 0; |
| |
| if (pm->voltage.supported && pm->voltage_set && perflvl->volt_min) { |
| ret = pm->voltage_set(dev, perflvl->volt_min); |
| if (ret) { |
| NV_ERROR(dev, "voltage_set %d failed: %d\n", |
| perflvl->volt_min, ret); |
| } |
| } |
| |
| nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core); |
| nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader); |
| nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory); |
| nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05); |
| |
| pm->cur = perflvl; |
| return 0; |
| } |
| |
| static int |
| nouveau_pm_profile_set(struct drm_device *dev, const char *profile) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct nouveau_pm_level *perflvl = NULL; |
| |
| /* safety precaution, for now */ |
| if (nouveau_perflvl_wr != 7777) |
| return -EPERM; |
| |
| if (!pm->clock_set) |
| return -EINVAL; |
| |
| if (!strncmp(profile, "boot", 4)) |
| perflvl = &pm->boot; |
| else { |
| int pl = simple_strtol(profile, NULL, 10); |
| int i; |
| |
| for (i = 0; i < pm->nr_perflvl; i++) { |
| if (pm->perflvl[i].id == pl) { |
| perflvl = &pm->perflvl[i]; |
| break; |
| } |
| } |
| |
| if (!perflvl) |
| return -EINVAL; |
| } |
| |
| NV_INFO(dev, "setting performance level: %s\n", profile); |
| return nouveau_pm_perflvl_set(dev, perflvl); |
| } |
| |
| static int |
| nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| int ret; |
| |
| memset(perflvl, 0, sizeof(*perflvl)); |
| |
| if (pm->clock_get) { |
| ret = pm->clock_get(dev, PLL_CORE); |
| if (ret > 0) |
| perflvl->core = ret; |
| |
| ret = pm->clock_get(dev, PLL_MEMORY); |
| if (ret > 0) |
| perflvl->memory = ret; |
| |
| ret = pm->clock_get(dev, PLL_SHADER); |
| if (ret > 0) |
| perflvl->shader = ret; |
| |
| ret = pm->clock_get(dev, PLL_UNK05); |
| if (ret > 0) |
| perflvl->unk05 = ret; |
| } |
| |
| if (pm->voltage.supported && pm->voltage_get) { |
| ret = pm->voltage_get(dev); |
| if (ret > 0) { |
| perflvl->volt_min = ret; |
| perflvl->volt_max = ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void |
| nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len) |
| { |
| char c[16], s[16], v[32], f[16], t[16], m[16]; |
| |
| c[0] = '\0'; |
| if (perflvl->core) |
| snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000); |
| |
| s[0] = '\0'; |
| if (perflvl->shader) |
| snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000); |
| |
| m[0] = '\0'; |
| if (perflvl->memory) |
| snprintf(m, sizeof(m), " memory %dMHz", perflvl->memory / 1000); |
| |
| v[0] = '\0'; |
| if (perflvl->volt_min && perflvl->volt_min != perflvl->volt_max) { |
| snprintf(v, sizeof(v), " voltage %dmV-%dmV", |
| perflvl->volt_min / 1000, perflvl->volt_max / 1000); |
| } else |
| if (perflvl->volt_min) { |
| snprintf(v, sizeof(v), " voltage %dmV", |
| perflvl->volt_min / 1000); |
| } |
| |
| f[0] = '\0'; |
| if (perflvl->fanspeed) |
| snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed); |
| |
| t[0] = '\0'; |
| if (perflvl->timing) |
| snprintf(t, sizeof(t), " timing %d", perflvl->timing->id); |
| |
| snprintf(ptr, len, "%s%s%s%s%s%s\n", c, s, m, t, v, f); |
| } |
| |
| static ssize_t |
| nouveau_pm_get_perflvl_info(struct device *d, |
| struct device_attribute *a, char *buf) |
| { |
| struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a; |
| char *ptr = buf; |
| int len = PAGE_SIZE; |
| |
| snprintf(ptr, len, "%d:", perflvl->id); |
| ptr += strlen(buf); |
| len -= strlen(buf); |
| |
| nouveau_pm_perflvl_info(perflvl, ptr, len); |
| return strlen(buf); |
| } |
| |
| static ssize_t |
| nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf) |
| { |
| struct drm_device *dev = pci_get_drvdata(to_pci_dev(d)); |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct nouveau_pm_level cur; |
| int len = PAGE_SIZE, ret; |
| char *ptr = buf; |
| |
| if (!pm->cur) |
| snprintf(ptr, len, "setting: boot\n"); |
| else if (pm->cur == &pm->boot) |
| snprintf(ptr, len, "setting: boot\nc:"); |
| else |
| snprintf(ptr, len, "setting: static %d\nc:", pm->cur->id); |
| ptr += strlen(buf); |
| len -= strlen(buf); |
| |
| ret = nouveau_pm_perflvl_get(dev, &cur); |
| if (ret == 0) |
| nouveau_pm_perflvl_info(&cur, ptr, len); |
| return strlen(buf); |
| } |
| |
| static ssize_t |
| nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a, |
| const char *buf, size_t count) |
| { |
| struct drm_device *dev = pci_get_drvdata(to_pci_dev(d)); |
| int ret; |
| |
| ret = nouveau_pm_profile_set(dev, buf); |
| if (ret) |
| return ret; |
| return strlen(buf); |
| } |
| |
| static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR, |
| nouveau_pm_get_perflvl, nouveau_pm_set_perflvl); |
| |
| static int |
| nouveau_sysfs_init(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct device *d = &dev->pdev->dev; |
| int ret, i; |
| |
| ret = device_create_file(d, &dev_attr_performance_level); |
| if (ret) |
| return ret; |
| |
| for (i = 0; i < pm->nr_perflvl; i++) { |
| struct nouveau_pm_level *perflvl = &pm->perflvl[i]; |
| |
| perflvl->dev_attr.attr.name = perflvl->name; |
| perflvl->dev_attr.attr.mode = S_IRUGO; |
| perflvl->dev_attr.show = nouveau_pm_get_perflvl_info; |
| perflvl->dev_attr.store = NULL; |
| sysfs_attr_init(&perflvl->dev_attr.attr); |
| |
| ret = device_create_file(d, &perflvl->dev_attr); |
| if (ret) { |
| NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n", |
| perflvl->id, i); |
| perflvl->dev_attr.attr.name = NULL; |
| nouveau_pm_fini(dev); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void |
| nouveau_sysfs_fini(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct device *d = &dev->pdev->dev; |
| int i; |
| |
| device_remove_file(d, &dev_attr_performance_level); |
| for (i = 0; i < pm->nr_perflvl; i++) { |
| struct nouveau_pm_level *pl = &pm->perflvl[i]; |
| |
| if (!pl->dev_attr.attr.name) |
| break; |
| |
| device_remove_file(d, &pl->dev_attr); |
| } |
| } |
| |
| #ifdef CONFIG_HWMON |
| static ssize_t |
| nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf) |
| { |
| struct drm_device *dev = dev_get_drvdata(d); |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000); |
| } |
| static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp, |
| NULL, 0); |
| |
| static ssize_t |
| nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf) |
| { |
| struct drm_device *dev = dev_get_drvdata(d); |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000); |
| } |
| static ssize_t |
| nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a, |
| const char *buf, size_t count) |
| { |
| struct drm_device *dev = dev_get_drvdata(d); |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp; |
| long value; |
| |
| if (strict_strtol(buf, 10, &value) == -EINVAL) |
| return count; |
| |
| temp->down_clock = value/1000; |
| |
| nouveau_temp_safety_checks(dev); |
| |
| return count; |
| } |
| static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp, |
| nouveau_hwmon_set_max_temp, |
| 0); |
| |
| static ssize_t |
| nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a, |
| char *buf) |
| { |
| struct drm_device *dev = dev_get_drvdata(d); |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000); |
| } |
| static ssize_t |
| nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a, |
| const char *buf, |
| size_t count) |
| { |
| struct drm_device *dev = dev_get_drvdata(d); |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp; |
| long value; |
| |
| if (strict_strtol(buf, 10, &value) == -EINVAL) |
| return count; |
| |
| temp->critical = value/1000; |
| |
| nouveau_temp_safety_checks(dev); |
| |
| return count; |
| } |
| static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR, |
| nouveau_hwmon_critical_temp, |
| nouveau_hwmon_set_critical_temp, |
| 0); |
| |
| static ssize_t nouveau_hwmon_show_name(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return sprintf(buf, "nouveau\n"); |
| } |
| static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0); |
| |
| static ssize_t nouveau_hwmon_show_update_rate(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return sprintf(buf, "1000\n"); |
| } |
| static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO, |
| nouveau_hwmon_show_update_rate, |
| NULL, 0); |
| |
| static struct attribute *hwmon_attributes[] = { |
| &sensor_dev_attr_temp1_input.dev_attr.attr, |
| &sensor_dev_attr_temp1_max.dev_attr.attr, |
| &sensor_dev_attr_temp1_crit.dev_attr.attr, |
| &sensor_dev_attr_name.dev_attr.attr, |
| &sensor_dev_attr_update_rate.dev_attr.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group hwmon_attrgroup = { |
| .attrs = hwmon_attributes, |
| }; |
| #endif |
| |
| static int |
| nouveau_hwmon_init(struct drm_device *dev) |
| { |
| #ifdef CONFIG_HWMON |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct device *hwmon_dev; |
| int ret; |
| |
| if (!pm->temp_get) |
| return -ENODEV; |
| |
| hwmon_dev = hwmon_device_register(&dev->pdev->dev); |
| if (IS_ERR(hwmon_dev)) { |
| ret = PTR_ERR(hwmon_dev); |
| NV_ERROR(dev, |
| "Unable to register hwmon device: %d\n", ret); |
| return ret; |
| } |
| dev_set_drvdata(hwmon_dev, dev); |
| ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup); |
| if (ret) { |
| NV_ERROR(dev, |
| "Unable to create hwmon sysfs file: %d\n", ret); |
| hwmon_device_unregister(hwmon_dev); |
| return ret; |
| } |
| |
| pm->hwmon = hwmon_dev; |
| #endif |
| return 0; |
| } |
| |
| static void |
| nouveau_hwmon_fini(struct drm_device *dev) |
| { |
| #ifdef CONFIG_HWMON |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| |
| if (pm->hwmon) { |
| sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup); |
| hwmon_device_unregister(pm->hwmon); |
| } |
| #endif |
| } |
| |
| #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY) |
| static int |
| nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data) |
| { |
| struct drm_nouveau_private *dev_priv = |
| container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb); |
| struct drm_device *dev = dev_priv->dev; |
| struct acpi_bus_event *entry = (struct acpi_bus_event *)data; |
| |
| if (strcmp(entry->device_class, "ac_adapter") == 0) { |
| bool ac = power_supply_is_system_supplied(); |
| |
| NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC"); |
| } |
| |
| return NOTIFY_OK; |
| } |
| #endif |
| |
| int |
| nouveau_pm_init(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| char info[256]; |
| int ret, i; |
| |
| nouveau_mem_timing_init(dev); |
| nouveau_volt_init(dev); |
| nouveau_perf_init(dev); |
| nouveau_temp_init(dev); |
| |
| NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl); |
| for (i = 0; i < pm->nr_perflvl; i++) { |
| nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info)); |
| NV_INFO(dev, "%d:%s", pm->perflvl[i].id, info); |
| } |
| |
| /* determine current ("boot") performance level */ |
| ret = nouveau_pm_perflvl_get(dev, &pm->boot); |
| if (ret == 0) { |
| strncpy(pm->boot.name, "boot", 4); |
| pm->cur = &pm->boot; |
| |
| nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info)); |
| NV_INFO(dev, "c:%s", info); |
| } |
| |
| /* switch performance levels now if requested */ |
| if (nouveau_perflvl != NULL) { |
| ret = nouveau_pm_profile_set(dev, nouveau_perflvl); |
| if (ret) { |
| NV_ERROR(dev, "error setting perflvl \"%s\": %d\n", |
| nouveau_perflvl, ret); |
| } |
| } |
| |
| nouveau_sysfs_init(dev); |
| nouveau_hwmon_init(dev); |
| #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY) |
| pm->acpi_nb.notifier_call = nouveau_pm_acpi_event; |
| register_acpi_notifier(&pm->acpi_nb); |
| #endif |
| |
| return 0; |
| } |
| |
| void |
| nouveau_pm_fini(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| |
| if (pm->cur != &pm->boot) |
| nouveau_pm_perflvl_set(dev, &pm->boot); |
| |
| nouveau_temp_fini(dev); |
| nouveau_perf_fini(dev); |
| nouveau_volt_fini(dev); |
| nouveau_mem_timing_fini(dev); |
| |
| #if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY) |
| unregister_acpi_notifier(&pm->acpi_nb); |
| #endif |
| nouveau_hwmon_fini(dev); |
| nouveau_sysfs_fini(dev); |
| } |
| |
| void |
| nouveau_pm_resume(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| struct nouveau_pm_engine *pm = &dev_priv->engine.pm; |
| struct nouveau_pm_level *perflvl; |
| |
| if (!pm->cur || pm->cur == &pm->boot) |
| return; |
| |
| perflvl = pm->cur; |
| pm->cur = &pm->boot; |
| nouveau_pm_perflvl_set(dev, perflvl); |
| } |