linux-kernel - Re: [PATCH] ASoC: wm8962: set ALC2 as non-volatile register

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Message-ID: <20151026084013.GG10520@ck-lbox>
Date:	Mon, 26 Oct 2015 08:40:13 +0000
From:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To:	Jiada Wang <jiada_wang@...tor.com>
CC:	<lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
	<tiwai@...e.com>, <patches@...nsource.wolfsonmicro.com>,
	<alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: wm8962: set ALC2 as non-volatile register

On Fri, Oct 23, 2015 at 02:18:48PM +0900, Jiada Wang wrote:
> Previously ALC2 register is set as a volatile register, declare
> it as one of ALC Coefficients register together with other non-volatile
> registers will cause issue, in case wm8962 has enter suspend mode,
> and cache_only flag is set, any attempt to read from ALC2 will fail.
> 
> Because the 5 status bits in ALC2 aren't used anywhere nor are useful
> to end user, so this patch removes ALC2 register from volatile
> register list to make ALC2 be possible to be accessed when cache_only
> flag is set.
> 
> Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
> ---

Acked-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>

Thanks,
Charles
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