- 根目录:
- drivers
- gpu
- drm
- nouveau
- nouveau_hwmon.c
/*
* 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
}