Commit 517b91f4 authored by Shirish S's avatar Shirish S Committed by Alex Deucher
Browse files

drm/amdgpu/{uvd,vcn}: fetch ring's read_ptr after alloc 



[What]
readptr read always returns zero, since most likely
these blocks are either power or clock gated.

[How]
fetch rptr after amdgpu_ring_alloc() which informs
the power management code that the block is about to be
used and hence the gating is turned off.

Signed-off-by: default avatarLouis Li <Ching-shih.Li@amd.com>
Signed-off-by: default avatarShirish S <shirish.s@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 671e2ee5

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

+3 −1
Original line number Diff line number Diff line
@@ -594,7 +594,7 @@ error: 
int amdgpu_vcn_enc_ring_test_ring(struct amdgpu_ring *ring)

{

	struct amdgpu_device *adev = ring->adev;

	uint32_t rptr = amdgpu_ring_get_rptr(ring);

	uint32_t rptr;

	unsigned i;

	int r;
@@ -602,6 +602,8 @@ int amdgpu_vcn_enc_ring_test_ring(struct amdgpu_ring *ring) 
	if (r)

		return r;



	rptr = amdgpu_ring_get_rptr(ring);



	amdgpu_ring_write(ring, VCN_ENC_CMD_END);

	amdgpu_ring_commit(ring);

drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c

+4 −1
Original line number Diff line number Diff line
@@ -170,13 +170,16 @@ static void uvd_v6_0_enc_ring_set_wptr(struct amdgpu_ring *ring) 
static int uvd_v6_0_enc_ring_test_ring(struct amdgpu_ring *ring)

{

	struct amdgpu_device *adev = ring->adev;

	uint32_t rptr = amdgpu_ring_get_rptr(ring);

	uint32_t rptr;

	unsigned i;

	int r;



	r = amdgpu_ring_alloc(ring, 16);

	if (r)

		return r;



	rptr = amdgpu_ring_get_rptr(ring);



	amdgpu_ring_write(ring, HEVC_ENC_CMD_END);

	amdgpu_ring_commit(ring);

drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c

+4 −1
Original line number Diff line number Diff line
@@ -175,7 +175,7 @@ static void uvd_v7_0_enc_ring_set_wptr(struct amdgpu_ring *ring) 
static int uvd_v7_0_enc_ring_test_ring(struct amdgpu_ring *ring)

{

	struct amdgpu_device *adev = ring->adev;

	uint32_t rptr = amdgpu_ring_get_rptr(ring);

	uint32_t rptr;

	unsigned i;

	int r;
@@ -185,6 +185,9 @@ static int uvd_v7_0_enc_ring_test_ring(struct amdgpu_ring *ring) 
	r = amdgpu_ring_alloc(ring, 16);

	if (r)

		return r;



	rptr = amdgpu_ring_get_rptr(ring);



	amdgpu_ring_write(ring, HEVC_ENC_CMD_END);

	amdgpu_ring_commit(ring);

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