diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2018-01-25 02:34:26 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 22:18:50 +0300 |
| commit | 2976fc2622b1e77236bea9f88a68f6ac5d2fa6ab (patch) | |
| tree | 266dcf91630828400f338b382c8ebc5134d4963e | |
| parent | 2bd376bf8f4db03f30ea9d9832a75bc29c2e6e6a (diff) | |
| download | linux-2976fc2622b1e77236bea9f88a68f6ac5d2fa6ab.tar.xz | |
drm/amdgpu/pm: report gpu average power via hwmon API
Expose power via hwmon.
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index eaf91d0e831e..17f9f3ad9bd1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -1170,6 +1170,38 @@ static ssize_t amdgpu_hwmon_show_vddnb_label(struct device *dev, return snprintf(buf, PAGE_SIZE, "vddnb\n"); } +static ssize_t amdgpu_hwmon_show_power_avg(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct amdgpu_device *adev = dev_get_drvdata(dev); + struct drm_device *ddev = adev->ddev; + struct pp_gpu_power query = {0}; + int r, size = sizeof(query); + unsigned uw; + + /* Can't get power when the card is off */ + if ((adev->flags & AMD_IS_PX) && + (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) + return -EINVAL; + + /* sanity check PP is enabled */ + if (!(adev->powerplay.pp_funcs && + adev->powerplay.pp_funcs->read_sensor)) + return -EINVAL; + + /* get the voltage */ + r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GPU_POWER, + (void *)&query, &size); + if (r) + return r; + + /* convert to microwatts */ + uw = (query.average_gpu_power >> 8) * 1000000; + + return snprintf(buf, PAGE_SIZE, "%u\n", uw); +} + static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, amdgpu_hwmon_show_temp, NULL, 0); static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 0); static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 1); @@ -1182,6 +1214,7 @@ static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, amdgpu_hwmon_show_vddgfx, NULL, 0) static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, amdgpu_hwmon_show_vddgfx_label, NULL, 0); static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, amdgpu_hwmon_show_vddnb, NULL, 0); static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, amdgpu_hwmon_show_vddnb_label, NULL, 0); +static SENSOR_DEVICE_ATTR(power1_average, S_IRUGO, amdgpu_hwmon_show_power_avg, NULL, 0); static struct attribute *hwmon_attributes[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, @@ -1196,6 +1229,7 @@ static struct attribute *hwmon_attributes[] = { &sensor_dev_attr_in0_label.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_label.dev_attr.attr, + &sensor_dev_attr_power1_average.dev_attr.attr, NULL }; |