amdgpu_gfx_off_ctrl
void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable);
amdgpu_gfx_off_ctrl(adev, true);
amdgpu_gfx_off_ctrl(adev, false);
amdgpu_gfx_off_ctrl(adev, false);
amdgpu_gfx_off_ctrl(adev, true);
amdgpu_gfx_off_ctrl(adev, false);
amdgpu_gfx_off_ctrl(adev, true);