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drm/amdgpu/cz: unforce dpm levels before forcing to low/high 

This is necessary to properly reset the min/max limits before
clamping them otherwise we may get improper clamping depending
on what what was the last forced level.

Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Alex Deucher 2015-07-14 12:26:41 -04:00
parent 4f2d3ad686
commit 85cfe09655
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/amd/amdgpu/cz_dpm.c
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@ -1687,17 +1687,23 @@ static int cz_dpm_unforce_dpm_levels(struct amdgpu_device *adev)
}
static int cz_dpm_force_dpm_level(struct amdgpu_device *adev,
enum amdgpu_dpm_forced_level level)
enum amdgpu_dpm_forced_level level)
{
int ret = 0;
switch (level) {
case AMDGPU_DPM_FORCED_LEVEL_HIGH:
ret = cz_dpm_unforce_dpm_levels(adev);
if (ret)
return ret;
ret = cz_dpm_force_highest(adev);
if (ret)
return ret;
break;
case AMDGPU_DPM_FORCED_LEVEL_LOW:
ret = cz_dpm_unforce_dpm_levels(adev);
if (ret)
return ret;
ret = cz_dpm_force_lowest(adev);
if (ret)
return ret;