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| author |   Rex Zhu <Rex.Zhu@amd.com> | 2018-09-28 16:01:48 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2018-10-09 17:05:05 -0500 |
| commit | b8a9c003679ea3619cef4092b10390224f09fbaa (patch) | |
| tree | 1548dbfa08af8c78347806fff54eb912778cef32 /drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | |
| parent | drm/amdgpu: Add fan RPM setting via sysfs (diff) | |
| download | linux-dev-b8a9c003679ea3619cef4092b10390224f09fbaa.tar.xz linux-dev-b8a9c003679ea3619cef4092b10390224f09fbaa.zip | |
drm/amdgpu: Disable sysfs pwm1 if not in manual fan control
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index a9f68753ec7f..68548fbdee09 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -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; |