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SubjectRe: [spi-devel-general] [Patch] Add spi full duplex mode transfer support
Date
On Tuesday 29 August 2006 9:40 pm, Luke Yang wrote:
> Hi all,
>
> To enable full duplex mode spi transfer in Blackfin spi master
> driver, I need an extra field in spi_transfer structure. Attached the
> right format patch.

I don't understand. ** ALL ** SPI transfers are full duplex.
If you want half duplex, just don't provide the buffer for the
transfer going in that direction (RX or TX).

Rejected ...


> Signed-off-by: Luke Yang <luke.adi@gmail.com>
>
> spi.h | 1 +
> 1 files changed, 1 insertion(+)
>
> diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
> index c8bb680..99816eb 100644
> --- a/include/linux/spi/spi.h
> +++ b/include/linux/spi/spi.h
> @@ -331,6 +331,7 @@ struct spi_transfer {
> dma_addr_t rx_dma;
>
> unsigned cs_change:1;
> + unsigned is_duplex:1;
> u8 bits_per_word;
> u16 delay_usecs;
> u32 speed_hz;
>
> --
> Best regards,
> Luke Yang
> luke.adi@gmail.com
>
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