linux-kernel - Re: [RFC 16/23] ASoC: omap: mcbsp, mcpdm, dmic: raw read and write endian fix

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Message-ID: <528798CF.4060609@bitmer.com>
Date:	Sat, 16 Nov 2013 18:09:51 +0200
From:	Jarkko Nikula <jarkko.nikula@...mer.com>
To:	Taras Kondratiuk <taras.kondratiuk@...aro.org>
CC:	linux-omap@...r.kernel.org, linaro-networking@...aro.org,
	Victor Kamensky <victor.kamensky@...aro.org>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 16/23] ASoC: omap: mcbsp, mcpdm, dmic: raw read and write
 endian fix

On 11/16/2013 02:01 AM, Taras Kondratiuk wrote:
> From: Victor Kamensky <victor.kamensky@...aro.org>
> 
> All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
> Need to use endian neutral functions to read/write h/w registers.
> I.e instead of __raw_read[lw] and __raw_write[lw] functions code
> need to use read[lw]_relaxed and write[lw]_relaxed functions.
> If the first simply reads/writes register, the second will byteswap
> it if host operates in BE mode.
> 
> Changes are trivial sed like replacement of __raw_xxx functions
> with xxx_relaxed variant.
> 
> Signed-off-by: Victor Kamensky <victor.kamensky@...aro.org>
> Signed-off-by: Taras Kondratiuk <taras.kondratiuk@...aro.org>
> ---
>  sound/soc/omap/mcbsp.c      |   12 ++++++------
>  sound/soc/omap/omap-dmic.c  |    4 ++--
>  sound/soc/omap/omap-mcpdm.c |    4 ++--
>  3 files changed, 10 insertions(+), 10 deletions(-)
> 
Looks ok to me by looking at the _relaxed definitions in
arch/arm/include/asm/io.h.

Acked-by: Jarkko Nikula <jarkko.nikula@...mer.com>

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