linux-kernel - Re: Question: regmap_field_write()

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Message-ID: <3ac8f0cb-492e-968e-1b74-ead3e40478e3@linaro.org>
Date:   Tue, 19 Jul 2022 14:01:53 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Question: regmap_field_write() - why using update?

On 14/07/2022 20:27, Mark Brown wrote:
> The write only registers are a good point - we could handle them through
> special casing, that'd avoid any overhead from reading or issues if a
> physical read happens to return something unfortunate for some reason.

I have something ready and I will send it soon.

> Now I think about it there's also the fun case of registers which don't
> have symmetric read and write, though at some point regmap_field does
> stop being useful and those might well be pushing it.

Right.

Best regards,
Krzysztof