Re: [PATCH v2 2/2] spi: fsl-spi: Implement trailing bits

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Feb 28, 2022 at 04:15:46PM +0100, Christophe Leroy wrote:

> +	if (!status && spi->trailing_bits) {
> +		struct spi_transfer t = {
> +			.len = 1,
> +			.tx_buf = empty_zero_page,
> +		};
> +
> +		if (spi->trailing_bits < 4)
> +			t.bits_per_word = 4;
> +		else if (spi->trailing_bits > 8)
> +			t.bits_per_word = 16;
> +		else
> +			t.bits_per_word = spi->trailing_bits;
> +
> +		status = fsl_spi_setup_transfer(spi, &t);
> +		if (!status)
> +			status = fsl_spi_bufs(spi, &t, 0);
> +	}
> +	m->status = status;

The binding looks good now but this is still driver specific code when
it looks like it could easily be implemented in the core - like I said
on the previous version you'd need to update drivers to advertise less
than 8 bits but there's basically nothing driver specific I can see here
so any driver using transfer_one() would get support that way.

Attachment: signature.asc
Description: PGP signature


[Index of Archives]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux