CS42L43_FIFO_SIZE
regmap_write(priv->regmap, CS42L43_TRAN_CONFIG6, CS42L43_FIFO_SIZE - 1);
regmap_write(priv->regmap, CS42L43_TRAN_CONFIG7, CS42L43_FIFO_SIZE - 1);
const u8 *block = min(buf + CS42L43_FIFO_SIZE, end);
u8 *block = min(buf + CS42L43_FIFO_SIZE, end);