W5500_SPI_BLOCK_SELECT 256 drivers/net/ethernet/wiznet/w5100-spi.c #define W5500_SPI_READ_CONTROL(addr) (W5500_SPI_BLOCK_SELECT(addr) << 3) W5500_SPI_BLOCK_SELECT 258 drivers/net/ethernet/wiznet/w5100-spi.c ((W5500_SPI_BLOCK_SELECT(addr) << 3) | BIT(2))