From: Sonny Jiang <sonny.jiang@xxxxxxx> The jpeg_v4_0_3 jpeg_pitch register uses UVD_JRBC_SCRATCH0. It needs to move WREG() to after jpeg_start. Switch to a posted register write when doing the ring test to make sure the register write lands before we test the result. Signed-off-by: Sonny Jiang <sonny.jiang@xxxxxxx> Reviewed-by: Leo Liu <leo.liu@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c index 388466a5f730..9a1db2bd03e7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c @@ -124,11 +124,14 @@ int amdgpu_jpeg_dec_ring_test_ring(struct amdgpu_ring *ring) if (amdgpu_sriov_vf(adev)) return 0; - WREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch[ring->pipe], 0xCAFEDEAD); r = amdgpu_ring_alloc(ring, 3); if (r) return r; + WREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch[ring->pipe], 0xCAFEDEAD); + /* Add a read register to make sure the write register is executed. */ + RREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch[ring->pipe]); + amdgpu_ring_write(ring, PACKET0(adev->jpeg.internal.jpeg_pitch[ring->pipe], 0)); amdgpu_ring_write(ring, 0xDEADBEEF); amdgpu_ring_commit(ring); -- 2.40.1
