mmVCE_RB_WPTR3
v = RREG32(mmVCE_RB_WPTR3);
WREG32(mmVCE_RB_WPTR3, lower_32_bits(ring->wptr));
WREG32(mmVCE_RB_WPTR3, lower_32_bits(ring->wptr));
WREG32(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_WPTR3),
WREG32(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_WPTR3), lower_32_bits(ring->wptr));
return RREG32(SOC15_REG_OFFSET(VCE, 0, mmVCE_RB_WPTR3));