linux-kernel - Re: [alsa-devel] [PATCH 01/15] ASoC: CS42L51 and WM8962 codecs depend on INPUT

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Message-ID: <alpine.DEB.2.02.1404292124270.31465@heelrod>
Date:	Tue, 29 Apr 2014 21:31:30 -0500
From:	Brian Austin <brian.austin@...rus.com>
To:	Xia Kaixu <kaixu.xia@...aro.org>
CC:	<linux-kernel@...r.kernel.org>, <alsa-devel@...a-project.org>,
	<linaro-kernel@...ts.linaro.org>,
	Lars-Peter Clausen <lars@...afoo.de>, <arnd@...db.de>,
	Sangbeom Kim <sbkim73@...sung.com>,
	Timur Tabi <timur@...i.org>,
	<linux-samsung-soc@...r.kernel.org>,
	Mark Brown <broonie@...nel.org>,
	Ben Dooks <ben-linux@...ff.org>, <linux-input@...r.kernel.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	Liam Girdwood <lrg@...mlogic.co.uk>
Subject: Re: [alsa-devel] [PATCH 01/15] ASoC: CS42L51 and WM8962 codecs depend
 on INPUT



On Tue, 29 Apr 2014, Xia Kaixu wrote:

> From: Arnd Bergmann <arnd@...db.de>
>
> Building ARM randconfig got into a situation where CONFIG_INPUT
> is turned off and SND_SOC_ALL_CODECS is turned on, which failed
> for two codecs trying to use the input subsystem. Some other
> drivers also select one of these codecs and consequently need an
> explicit dependency added.

I assume you mean the CS42L52 instead of the L51. INPUT is used for a BEEP 
Generator but when I disable CONFIG_INPUT I do not get an error. Is there 
any information available on what the error is?


>
> Appending to the dependency list seems the easiest way out,
> since this is not a practical limitation. If anyone really
> needs to build these codecs for a kernel with no input support,
> a more sophisticated solution can be implemented.
>
It shouldn't build the BEEP code without CONFIG_INPUT enabled as you can 
use the CODEC without the BEEP enabled.

I believe the WM8962 is done the same way.

Thanks,
Brian
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