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drm/amdgpu: Disable sysfs pwm1 if not in manual fan control

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Following lm-sensors 3.0.0,
Only enable pwm1 sysfs when fan control mode(pwm1_enable)
in manual

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu 2018-09-28 16:01:48 +08:00 committed by Alex Deucher
parent c2870527f7
commit b8a9c00367
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
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@ -1120,12 +1120,19 @@ static ssize_t amdgpu_hwmon_set_pwm1(struct device *dev,
struct amdgpu_device *adev = dev_get_drvdata(dev);
int err;
u32 value;
u32 pwm_mode;
/* Can't adjust fan when the card is off */
if ((adev->flags & AMD_IS_PX) &&
(adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
return -EINVAL;
pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
if (pwm_mode != AMD_FAN_CTRL_MANUAL) {
pr_info("manual fan speed control should be enabled first\n");
return -EINVAL;
}
err = kstrtou32(buf, 10, &value);
if (err)
return err;