diff options
| author | Christian König <christian.koenig@amd.com> | 2016-07-20 14:49:34 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-07-29 21:37:02 +0300 |
| commit | f06505b8d27119202d76aeb1b80b2ca352c9567e (patch) | |
| tree | 6d6cba5cd07c7b436ce32ba13d4463ee6b3c5d80 /drivers/gpu/drm/amd/amdgpu | |
| parent | 7c23ace2db5217cfbe066a21d98b761321c67efd (diff) | |
| download | linux-f06505b8d27119202d76aeb1b80b2ca352c9567e.tar.xz | |
drm/amdgpu: add begin/end_use ring callbacks
For manual UVD/VCE power and clock gating.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 10 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 30124f4916d2..51c4924b60b7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -313,6 +313,9 @@ struct amdgpu_ring_funcs { void (*pad_ib)(struct amdgpu_ring *ring, struct amdgpu_ib *ib); unsigned (*init_cond_exec)(struct amdgpu_ring *ring); void (*patch_cond_exec)(struct amdgpu_ring *ring, unsigned offset); + /* note usage for clock and power gating */ + void (*begin_use)(struct amdgpu_ring *ring); + void (*end_use)(struct amdgpu_ring *ring); }; /* diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c index f305f6309e8e..85aeb0a804bb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c @@ -75,6 +75,10 @@ int amdgpu_ring_alloc(struct amdgpu_ring *ring, unsigned ndw) ring->count_dw = ndw; ring->wptr_old = ring->wptr; + + if (ring->funcs->begin_use) + ring->funcs->begin_use(ring); + return 0; } @@ -127,6 +131,9 @@ void amdgpu_ring_commit(struct amdgpu_ring *ring) mb(); amdgpu_ring_set_wptr(ring); + + if (ring->funcs->end_use) + ring->funcs->end_use(ring); } /** @@ -139,6 +146,9 @@ void amdgpu_ring_commit(struct amdgpu_ring *ring) void amdgpu_ring_undo(struct amdgpu_ring *ring) { ring->wptr = ring->wptr_old; + + if (ring->funcs->end_use) + ring->funcs->end_use(ring); } /** |