linux-kernel - Re: [PATCH 0/4][RFC] regmap: add force write option

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Message-ID: <5594EC65.9060800@metafoo.de>
Date:	Thu, 02 Jul 2015 09:46:45 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
	Mark Brown <broonie@...nel.org>
CC:	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	shiiba <naoya.shiiba.nx@...esas.com>
Subject: Re: [PATCH 0/4][RFC] regmap: add force write option

On 06/16/2015 10:51 AM, Kuninori Morimoto wrote:
>
> Hi Mark
>
> Current _regmap_update_bits() writes data to register if current value and
> write value was different. This means it doesn't write data if the value was
> same as current value.
> But, some device needs to write data even though it was same value.

Can you go into more detail about the exact usecase with a specific example?

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