mmUVD_RB_RPTR
WREG32_SOC15(UVD, 0, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
WREG32(mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
return RREG32(mmUVD_RB_RPTR);
WREG32_SOC15(UVD, k, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
return RREG32_SOC15(UVD, ring->me, mmUVD_RB_RPTR);
return RREG32_SOC15(UVD, 0, mmUVD_RB_RPTR);
WREG32_SOC15(UVD, 0, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));