On Fri, Nov 27, 2020 at 4:22 PM Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote: > On Fri, Nov 27, 2020 at 3:08 PM Alexandru Ardelean > <alexandru.ardelean@xxxxxxxxxx> wrote: ... > > --- a/include/uapi/linux/spi/spi.h > > +++ b/include/uapi/linux/spi/spi.h > > @@ -43,5 +43,7 @@ > > #define SPI_TX_OCTAL 0x2000 /* transmit with 8 wires */ > > #define SPI_RX_OCTAL 0x4000 /* receive with 8 wires */ > > #define SPI_3WIRE_HIZ 0x8000 /* high impedance turnaround */ > > +#define SPI_NO_TX 0x10000 /* no transmit wire */ > > +#define SPI_NO_RX 0x20000 /* no receive wire */ > > Is it really material for uAPI? > Perhaps we may have something like > SPI_MODE_USER_MASK in uAPI and > in internal headers > > SPI_MODE_KERNEL_MASK with > static_assert(_USER_MASK & _KERNEL_MASK); // check conditional > > ? And logically start bits for the kernel from the end (31, 30, ...). -- With Best Regards, Andy Shevchenko
