HPD3_REGISTER_OFFSET   50 drivers/gpu/drm/amd/amdgpu/cikd.h #define HPD3_REGISTER_OFFSET                 (0x1810 - 0x1807)
HPD3_REGISTER_OFFSET   66 drivers/gpu/drm/amd/amdgpu/vid.h #define HPD3_REGISTER_OFFSET                 (0x18b0 - 0x1898)