// Read SPI device default max speed hz func SPI_IOC_RD_MAX_SPEED_HZ() uintptr { return ioctl.IOR(SPI_IOC_MAGIC, 4, 4) }
// Read SPI bit justification func SPI_IOC_RD_LSB_FIRST() uintptr { return ioctl.IOR(SPI_IOC_MAGIC, 2, 1) }
// Read SPI device word length (1..N) func SPI_IOC_RD_BITS_PER_WORD() uintptr { return ioctl.IOR(SPI_IOC_MAGIC, 3, 1) }
// Read of SPI mode (SPI_MODE_0..SPI_MODE_3) func SPI_IOC_RD_MODE() uintptr { return ioctl.IOR(SPI_IOC_MAGIC, 1, 1) }