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authorChristian König <christian.koenig@amd.com>2016-07-20 14:49:34 +0300
committerAlex Deucher <alexander.deucher@amd.com>2016-07-29 21:37:02 +0300
commitf06505b8d27119202d76aeb1b80b2ca352c9567e (patch)
tree6d6cba5cd07c7b436ce32ba13d4463ee6b3c5d80 /drivers/gpu
parent7c23ace2db5217cfbe066a21d98b761321c67efd (diff)
downloadlinux-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')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu.h3
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c10
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);
}
/**