drm/amdgpu: add new emit_reg_wait callback

Allows us to wait for a register value/mask on a ring.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-01-26 12:45:32 +01:00 • committed by Alex Deucher
commit c1e877da57
2 changed files with 3 additions and 0 deletions