diff options
author | 2015-08-04 12:17:53 -0700 | |
---|---|---|
committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/nouveau/nouveau_hwmon.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/nouveau/nouveau_hwmon.c')
-rw-r--r-- | kernel/drivers/gpu/drm/nouveau/nouveau_hwmon.c | 648 |
1 files changed, 648 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_hwmon.c b/kernel/drivers/gpu/drm/nouveau/nouveau_hwmon.c new file mode 100644 index 000000000..0dbe0060f --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nouveau_hwmon.c @@ -0,0 +1,648 @@ +/* + * 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 + */ + +#ifdef CONFIG_ACPI +#include <linux/acpi.h> +#endif +#include <linux/power_supply.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> + +#include <drm/drmP.h> + +#include "nouveau_drm.h" +#include "nouveau_hwmon.h" + +#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE)) +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 nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + int temp = therm->temp_get(therm); + + if (temp < 0) + return temp; + + return snprintf(buf, PAGE_SIZE, "%d\n", temp * 1000); +} +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp, + NULL, 0); + +static ssize_t +nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d, + struct device_attribute *a, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", 100); +} +static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO, + nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0); + +static ssize_t +nouveau_hwmon_temp1_auto_point1_temp(struct device *d, + struct device_attribute *a, char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000); +} +static ssize_t +nouveau_hwmon_set_temp1_auto_point1_temp(struct device *d, + struct device_attribute *a, + const char *buf, size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST, + value / 1000); + + return count; +} +static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, S_IRUGO | S_IWUSR, + nouveau_hwmon_temp1_auto_point1_temp, + nouveau_hwmon_set_temp1_auto_point1_temp, 0); + +static ssize_t +nouveau_hwmon_temp1_auto_point1_temp_hyst(struct device *d, + struct device_attribute *a, char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000); +} +static ssize_t +nouveau_hwmon_set_temp1_auto_point1_temp_hyst(struct device *d, + struct device_attribute *a, + const char *buf, size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST, + value / 1000); + + return count; +} +static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, + nouveau_hwmon_temp1_auto_point1_temp_hyst, + nouveau_hwmon_set_temp1_auto_point1_temp_hyst, 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 nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK) * 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 nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK, value / 1000); + + 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_max_temp_hyst(struct device *d, struct device_attribute *a, + char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST) * 1000); +} +static ssize_t +nouveau_hwmon_set_max_temp_hyst(struct device *d, struct device_attribute *a, + const char *buf, size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST, + value / 1000); + + return count; +} +static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, + nouveau_hwmon_max_temp_hyst, + nouveau_hwmon_set_max_temp_hyst, 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 nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_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 nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL, value / 1000); + + 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_critical_temp_hyst(struct device *d, struct device_attribute *a, + char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST) * 1000); +} +static ssize_t +nouveau_hwmon_set_critical_temp_hyst(struct device *d, + struct device_attribute *a, + const char *buf, + size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST, + value / 1000); + + return count; +} +static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO | S_IWUSR, + nouveau_hwmon_critical_temp_hyst, + nouveau_hwmon_set_critical_temp_hyst, 0); +static ssize_t +nouveau_hwmon_emergency_temp(struct device *d, struct device_attribute *a, + char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN) * 1000); +} +static ssize_t +nouveau_hwmon_set_emergency_temp(struct device *d, struct device_attribute *a, + const char *buf, + size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN, value / 1000); + + return count; +} +static SENSOR_DEVICE_ATTR(temp1_emergency, S_IRUGO | S_IWUSR, + nouveau_hwmon_emergency_temp, + nouveau_hwmon_set_emergency_temp, + 0); + +static ssize_t +nouveau_hwmon_emergency_temp_hyst(struct device *d, struct device_attribute *a, + char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", + therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST) * 1000); +} +static ssize_t +nouveau_hwmon_set_emergency_temp_hyst(struct device *d, + struct device_attribute *a, + const char *buf, + size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return count; + + therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST, + value / 1000); + + return count; +} +static SENSOR_DEVICE_ATTR(temp1_emergency_hyst, S_IRUGO | S_IWUSR, + nouveau_hwmon_emergency_temp_hyst, + nouveau_hwmon_set_emergency_temp_hyst, + 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 ssize_t +nouveau_hwmon_show_fan1_input(struct device *d, struct device_attribute *attr, + char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + + return snprintf(buf, PAGE_SIZE, "%d\n", therm->fan_sense(therm)); +} +static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, nouveau_hwmon_show_fan1_input, + NULL, 0); + + static ssize_t +nouveau_hwmon_get_pwm1_enable(struct device *d, + struct device_attribute *a, char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + int ret; + + ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MODE); + if (ret < 0) + return ret; + + return sprintf(buf, "%i\n", ret); +} + +static ssize_t +nouveau_hwmon_set_pwm1_enable(struct device *d, struct device_attribute *a, + const char *buf, size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + int ret; + + ret = kstrtol(buf, 10, &value); + if (ret) + return ret; + + ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MODE, value); + if (ret) + return ret; + else + return count; +} +static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, + nouveau_hwmon_get_pwm1_enable, + nouveau_hwmon_set_pwm1_enable, 0); + +static ssize_t +nouveau_hwmon_get_pwm1(struct device *d, struct device_attribute *a, char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + int ret; + + ret = therm->fan_get(therm); + if (ret < 0) + return ret; + + return sprintf(buf, "%i\n", ret); +} + +static ssize_t +nouveau_hwmon_set_pwm1(struct device *d, struct device_attribute *a, + const char *buf, size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + int ret = -ENODEV; + long value; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return -EINVAL; + + ret = therm->fan_set(therm, value); + if (ret) + return ret; + + return count; +} + +static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, + nouveau_hwmon_get_pwm1, + nouveau_hwmon_set_pwm1, 0); + +static ssize_t +nouveau_hwmon_get_pwm1_min(struct device *d, + struct device_attribute *a, char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + int ret; + + ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY); + if (ret < 0) + return ret; + + return sprintf(buf, "%i\n", ret); +} + +static ssize_t +nouveau_hwmon_set_pwm1_min(struct device *d, struct device_attribute *a, + const char *buf, size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + int ret; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return -EINVAL; + + ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY, value); + if (ret < 0) + return ret; + + return count; +} + +static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO | S_IWUSR, + nouveau_hwmon_get_pwm1_min, + nouveau_hwmon_set_pwm1_min, 0); + +static ssize_t +nouveau_hwmon_get_pwm1_max(struct device *d, + struct device_attribute *a, char *buf) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + int ret; + + ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY); + if (ret < 0) + return ret; + + return sprintf(buf, "%i\n", ret); +} + +static ssize_t +nouveau_hwmon_set_pwm1_max(struct device *d, struct device_attribute *a, + const char *buf, size_t count) +{ + struct drm_device *dev = dev_get_drvdata(d); + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + long value; + int ret; + + if (kstrtol(buf, 10, &value) == -EINVAL) + return -EINVAL; + + ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY, value); + if (ret < 0) + return ret; + + return count; +} + +static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO | S_IWUSR, + nouveau_hwmon_get_pwm1_max, + nouveau_hwmon_set_pwm1_max, 0); + +static struct attribute *hwmon_default_attributes[] = { + &sensor_dev_attr_name.dev_attr.attr, + &sensor_dev_attr_update_rate.dev_attr.attr, + NULL +}; +static struct attribute *hwmon_temp_attributes[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr, + &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, + &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, + &sensor_dev_attr_temp1_crit.dev_attr.attr, + &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, + &sensor_dev_attr_temp1_emergency.dev_attr.attr, + &sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr, + NULL +}; +static struct attribute *hwmon_fan_rpm_attributes[] = { + &sensor_dev_attr_fan1_input.dev_attr.attr, + NULL +}; +static struct attribute *hwmon_pwm_fan_attributes[] = { + &sensor_dev_attr_pwm1_enable.dev_attr.attr, + &sensor_dev_attr_pwm1.dev_attr.attr, + &sensor_dev_attr_pwm1_min.dev_attr.attr, + &sensor_dev_attr_pwm1_max.dev_attr.attr, + NULL +}; + +static const struct attribute_group hwmon_default_attrgroup = { + .attrs = hwmon_default_attributes, +}; +static const struct attribute_group hwmon_temp_attrgroup = { + .attrs = hwmon_temp_attributes, +}; +static const struct attribute_group hwmon_fan_rpm_attrgroup = { + .attrs = hwmon_fan_rpm_attributes, +}; +static const struct attribute_group hwmon_pwm_fan_attrgroup = { + .attrs = hwmon_pwm_fan_attributes, +}; +#endif + +int +nouveau_hwmon_init(struct drm_device *dev) +{ +#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE)) + struct nouveau_drm *drm = nouveau_drm(dev); + struct nvkm_therm *therm = nvxx_therm(&drm->device); + struct nouveau_hwmon *hwmon; + struct device *hwmon_dev; + int ret = 0; + + hwmon = drm->hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL); + if (!hwmon) + return -ENOMEM; + hwmon->dev = dev; + + if (!therm || !therm->temp_get || !therm->attr_get || !therm->attr_set) + return -ENODEV; + + hwmon_dev = hwmon_device_register(&dev->pdev->dev); + if (IS_ERR(hwmon_dev)) { + ret = PTR_ERR(hwmon_dev); + NV_ERROR(drm, "Unable to register hwmon device: %d\n", ret); + return ret; + } + dev_set_drvdata(hwmon_dev, dev); + + /* set the default attributes */ + ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_default_attrgroup); + if (ret) + goto error; + + /* if the card has a working thermal sensor */ + if (therm->temp_get(therm) >= 0) { + ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_temp_attrgroup); + if (ret) + goto error; + } + + /* if the card has a pwm fan */ + /*XXX: incorrect, need better detection for this, some boards have + * the gpio entries for pwm fan control even when there's no + * actual fan connected to it... therm table? */ + if (therm->fan_get && therm->fan_get(therm) >= 0) { + ret = sysfs_create_group(&hwmon_dev->kobj, + &hwmon_pwm_fan_attrgroup); + if (ret) + goto error; + } + + /* if the card can read the fan rpm */ + if (therm->fan_sense(therm) >= 0) { + ret = sysfs_create_group(&hwmon_dev->kobj, + &hwmon_fan_rpm_attrgroup); + if (ret) + goto error; + } + + hwmon->hwmon = hwmon_dev; + + return 0; + +error: + NV_ERROR(drm, "Unable to create some hwmon sysfs files: %d\n", ret); + hwmon_device_unregister(hwmon_dev); + hwmon->hwmon = NULL; + return ret; +#else + return 0; +#endif +} + +void +nouveau_hwmon_fini(struct drm_device *dev) +{ +#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE)) + struct nouveau_hwmon *hwmon = nouveau_hwmon(dev); + + if (hwmon->hwmon) { + sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_default_attrgroup); + sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_temp_attrgroup); + sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_pwm_fan_attrgroup); + sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_fan_rpm_attrgroup); + + hwmon_device_unregister(hwmon->hwmon); + } + + nouveau_drm(dev)->hwmon = NULL; + kfree(hwmon); +#endif +} |