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Commit f06505b8 authored by Christian König's avatar Christian König Committed by Alex Deucher
Browse files

drm/amdgpu: add begin/end_use ring callbacks 



For manual UVD/VCE power and clock gating.

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarEdward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7c23ace2

drivers/gpu/drm/amd/amdgpu/amdgpu.h

+3 −0
Original line number Diff line number Diff line
@@ -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);

};



/*

drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c

+10 −0
Original line number Diff line number Diff line
@@ -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);

}



/**