Applied "spi: Add spi_is_bpw_supported()" to the spi tree

[Noralf Trønnes]

Hi Mark,

Den 15.04.2019 10.53, skrev Mark Brown:
> The patch
> 
>    spi: Add spi_is_bpw_supported()
> 
> has been applied to the spi tree at
> 
>    https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-5.2
> 

I can't see this in for-5.2 or linux-next. You also gave me a topic
branch for this, but I wasn't able to get an r-b on the drm patch in the
few days left before the -rc5 cutoff in the drm subsystem. This means
that the patch didn't go in through drm for 5.2.

How do we proceed from here?

Noralf.

> All being well this means that it will be integrated into the linux-next
> tree (usually sometime in the next 24 hours) and sent to Linus during
> the next merge window (or sooner if it is a bug fix), however if
> problems are discovered then the patch may be dropped or reverted.  
> 
> You may get further e-mails resulting from automated or manual testing
> and review of the tree, please engage with people reporting problems and
> send followup patches addressing any issues that are reported if needed.
> 
> If any updates are required or you are submitting further changes they
> should be sent as incremental updates against current git, existing
> patches will not be replaced.
> 
> Please add any relevant lists and maintainers to the CCs when replying
> to this mail.
> 
> Thanks,
> Mark
> 
> From e6f3f7e4dc76eb8d8a546dc66621a02c5c84f4ac Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf at tronnes.org>
> Date: Fri, 12 Apr 2019 11:41:30 +0200
> Subject: [PATCH] spi: Add spi_is_bpw_supported()
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 8bit
> 
> This let SPI clients check if the controller supports a particular word
> width. drivers/gpu/drm/tinydrm/mipi-dbi.c will use this to determine if
> the controller supports 16-bit for RGB565 pixels. If it doesn't it will
> swap the bytes before transfer on little endian machines.
> 
> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
> Signed-off-by: Mark Brown <broonie at kernel.org>
> ---
>  include/linux/spi/spi.h | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
> index 662b336aa2e4..b30e3d13a5ac 100644
> --- a/include/linux/spi/spi.h
> +++ b/include/linux/spi/spi.h
> @@ -983,6 +983,26 @@ spi_max_transfer_size(struct spi_device *spi)
>  	return min(tr_max, msg_max);
>  }
>  
> +/**
> + * spi_is_bpw_supported - Check if bits per word is supported
> + * @spi: SPI device
> + * @bpw: Bits per word
> + *
> + * This function checks to see if the SPI controller supports @bpw.
> + *
> + * Returns:
> + * True if @bpw is supported, false otherwise.
> + */
> +static inline bool spi_is_bpw_supported(struct spi_device *spi, u32 bpw)
> +{
> +	u32 bpw_mask = spi->master->bits_per_word_mask;
> +
> +	if (bpw == 8 || (bpw <= 32 && bpw_mask & SPI_BPW_MASK(bpw)))
> +		return true;
> +
> +	return false;
> +}
> +
>  /*---------------------------------------------------------------------------*/
>  
>  /* SPI transfer replacement methods which make use of spi_res */
>