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drm/amd/amdgpu: expose fan rpm though hwmon 

Only for cards that are supported by powerplay.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Grazvydas Ignotas 2016-10-29 23:28:59 +03:00 committed by Alex Deucher
parent 72a16a9d59
commit 81c1514bf8
2 changed files with 26 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
View File

@ -317,6 +317,11 @@ struct amdgpu_dpm_funcs {
(adev)->powerplay.pp_funcs->get_fan_speed_percent((adev)->powerplay.pp_handle, (s)) : \
(adev)->pm.funcs->get_fan_speed_percent((adev), (s)))
#define amdgpu_dpm_get_fan_speed_rpm(adev, s) \
((adev)->pp_enabled ? \
(adev)->powerplay.pp_funcs->get_fan_speed_rpm((adev)->powerplay.pp_handle, (s)) : \
-EINVAL)
#define amdgpu_dpm_get_sclk(adev, l) \
((adev)->pp_enabled ? \
(adev)->powerplay.pp_funcs->get_sclk((adev)->powerplay.pp_handle, (l)) : \

21
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
View File

@ -737,6 +737,21 @@ static ssize_t amdgpu_hwmon_get_pwm1(struct device *dev,
return sprintf(buf, "%i\n", speed);
}
static ssize_t amdgpu_hwmon_get_fan1_input(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct amdgpu_device *adev = dev_get_drvdata(dev);
int err;
u32 speed;
err = amdgpu_dpm_get_fan_speed_rpm(adev, &speed);
if (err)
return err;
return sprintf(buf, "%i\n", speed);
}
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);
@ -744,6 +759,7 @@ static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1, amdgpu
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1_enable, amdgpu_hwmon_set_pwm1_enable, 0);
static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, amdgpu_hwmon_get_pwm1_min, NULL, 0);
static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, amdgpu_hwmon_get_pwm1_max, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, amdgpu_hwmon_get_fan1_input, NULL, 0);
static struct attribute *hwmon_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
@ -753,6 +769,7 @@ static struct attribute *hwmon_attributes[] = {
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1_min.dev_attr.attr,
&sensor_dev_attr_pwm1_max.dev_attr.attr,
&sensor_dev_attr_fan1_input.dev_attr.attr,
NULL
};
@ -804,6 +821,10 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
return 0;
/* requires powerplay */
if (attr == &sensor_dev_attr_fan1_input.dev_attr.attr)
return 0;
return effective_mode;
}