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drm/nouveau/hwmon: add power consumption

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v2: expose only if the sensor reading is valid

Signed-off-by: Karol Herbst <nouveau@karolherbst.de>
Reviewed-by: Martin Peres <martin.peres@free.fr>
This commit is contained in:
Karol Herbst 2016-02-18 20:10:19 +01:00 committed by Ben Skeggs
parent b71c089263
commit 353b983440
2 changed files with 37 additions and 0 deletions
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1
drivers/gpu/drm/nouveau/include/nvif/device.h
View file

@ -62,6 +62,7 @@ u64 nvif_device_time(struct nvif_device *);
#define nvxx_gpio(a) nvxx_device(a)->gpio
#define nvxx_clk(a) nvxx_device(a)->clk
#define nvxx_i2c(a) nvxx_device(a)->i2c
#define nvxx_iccsense(a) nvxx_device(a)->iccsense
#define nvxx_therm(a) nvxx_device(a)->therm
#define nvxx_volt(a) nvxx_device(a)->volt

36
drivers/gpu/drm/nouveau/nouveau_hwmon.c
View file

@ -34,6 +34,7 @@
#include "nouveau_drm.h"
#include "nouveau_hwmon.h"
#include <nvkm/subdev/iccsense.h>
#include <nvkm/subdev/volt.h>
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
@ -543,6 +544,24 @@ nouveau_hwmon_get_in0_label(struct device *d,
static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO,
nouveau_hwmon_get_in0_label, NULL, 0);
static ssize_t
nouveau_hwmon_get_power1_input(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_iccsense *iccsense = nvxx_iccsense(&drm->device);
int result = nvkm_iccsense_read_all(iccsense);
if (result < 0)
return result;
return sprintf(buf, "%i\n", result);
}
static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO,
nouveau_hwmon_get_power1_input, NULL, 0);
static struct attribute *hwmon_default_attributes[] = {
&sensor_dev_attr_name.dev_attr.attr,
&sensor_dev_attr_update_rate.dev_attr.attr,
@ -579,6 +598,11 @@ static struct attribute *hwmon_in0_attributes[] = {
NULL
};
static struct attribute *hwmon_power_attributes[] = {
&sensor_dev_attr_power1_input.dev_attr.attr,
NULL
};
static const struct attribute_group hwmon_default_attrgroup = {
.attrs = hwmon_default_attributes,
};
@ -594,6 +618,9 @@ static const struct attribute_group hwmon_pwm_fan_attrgroup = {
static const struct attribute_group hwmon_in0_attrgroup = {
.attrs = hwmon_in0_attributes,
};
static const struct attribute_group hwmon_power_attrgroup = {
.attrs = hwmon_power_attributes,
};
#endif
int
@ -603,6 +630,7 @@ nouveau_hwmon_init(struct drm_device *dev)
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(&drm->device);
struct nvkm_volt *volt = nvxx_volt(&drm->device);
struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->device);
struct nouveau_hwmon *hwmon;
struct device *hwmon_dev;
int ret = 0;
@ -662,6 +690,13 @@ nouveau_hwmon_init(struct drm_device *dev)
goto error;
}
if (iccsense && iccsense->data_valid && iccsense->rail_count) {
ret = sysfs_create_group(&hwmon_dev->kobj,
&hwmon_power_attrgroup);
if (ret)
goto error;
}
hwmon->hwmon = hwmon_dev;
return 0;
@ -688,6 +723,7 @@ nouveau_hwmon_fini(struct drm_device *dev)
sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_pwm_fan_attrgroup);
sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_fan_rpm_attrgroup);
sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_in0_attrgroup);
sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_power_attrgroup);
hwmon_device_unregister(hwmon->hwmon);
}