linux-kernel - Re: [alsa-devel] [PATCH 2/2] ASoC: io: Remove reduntant params of snd_soc_codec_set_cache

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Date:	Fri, 28 Feb 2014 09:26:05 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Xiubo Li <Li.Xiubo@...escale.com>
CC:	broonie@...nel.org, lgirdwood@...il.com,
	alsa-devel@...a-project.org, kuninori.morimoto.gx@...esas.com,
	abrestic@...omium.org, viresh.kumar@...aro.org, timur@...i.org,
	peter.ujfalusi@...com, mr.swami.reddy@...com, voice.shen@...el.com,
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	sachin.kamat@...aro.org, mpa@...gutronix.de, shawn.guo@...aro.org,
	alban.bedel@...onic-design.de, jic23@...nel.org
Subject: Re: [alsa-devel] [PATCH 2/2] ASoC: io: Remove reduntant params of
 snd_soc_codec_set_cache_io()

On 02/28/2014 06:06 AM, Xiubo Li wrote:
[...]
> @@ -118,7 +115,6 @@ int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
>   EXPORT_SYMBOL_GPL(snd_soc_codec_set_cache_io);
>   #else
>   int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
> -			       int addr_bits, int data_bits,
>   			       enum snd_soc_control_type control)

Since the only control type that is left is SND_SOC_REGMAP that can be 
removed as well. And while you are at it I think we should make it possible 
to specify the regmap struct as a parameter to snd_soc_codec_set_cache_io(). 
So basically the new signature of the function should be:

snd_soc_codec_set_cache_io(struct snd_soc_codec *codec, struct regmap *regmap)

if regmap is NULL the function should use dev_get_regmap(), otherwise use 
the supplied regmap struct. This turns the two step initialization in the 
form of

	codec->control_data = priv->regmap;
	snd_soc_codec_set_cache_io(codec, ...);

into
	snd_soc_codec_set_cache_io(codec, priv->regmap);

which is much nicer in my opinion.

- Lars

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