drm/amdgpu/vcn: refactor dec message functions

refactor dec message functions to add dec software ring support.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
James Zhu 2020-11-18 09:08:03 -05:00 • committed by Alex Deucher
commit 9b84ec8e43