drm/amdgpu/sdma4: add dynamic power gating for raven

Add the functions to enable dynamic powergating.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2017-02-28 16:13:32 +08:00 • committed by Alex Deucher
commit 13cfe5d076