drm/amd/powerplay: workaround for UVD clock issue

workaround issue that when uvd dpm disabled,
uvd clock remain high on polaris10. Manually turn
off the clocks.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index e19520c..d9c88d1 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -1106,6 +1106,10 @@ static void amdgpu_uvd_idle_work_handler(struct work_struct *work)
        if (fences == 0 && handles == 0) {
                if (adev->pm.dpm_enabled) {
                        amdgpu_dpm_enable_uvd(adev, false);
+                       /* just work around for uvd clock remain high even
+                        * when uvd dpm disabled on Polaris10 */
+                       if (adev->asic_type == CHIP_POLARIS10)
+                               amdgpu_asic_set_uvd_clocks(adev, 0, 0);
                } else {
                        amdgpu_asic_set_uvd_clocks(adev, 0, 0);
                }