JAZZ_R4030_CHNL_COUNT
(unsigned) r4030_read_reg32(JAZZ_R4030_CHNL_COUNT +
r4030_write_reg32(JAZZ_R4030_CHNL_COUNT + (channel << 5), count);
residual = r4030_read_reg32(JAZZ_R4030_CHNL_COUNT + (channel << 5));