linux-kernel - Re: [PATCH 2/5] regmap: Expose regmap_writeable function to check if a register is writable

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Message-ID: <Y0/mMeVSTEKfOgBN@sirena.org.uk>
Date:   Wed, 19 Oct 2022 12:57:37 +0100
From:   Mark Brown <broonie@...nel.org>
To:     chengwei <foxfly.lai.tw@...il.com>
Cc:     lee@...nel.org, rafael@...nel.org, mika.westerberg@...ux.intel.com,
        andriy.shevchenko@...ux.intel.com, linus.walleij@...aro.org,
        brgl@...ev.pl, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org, lenb@...nel.org,
        linux-acpi@...r.kernel.org, linux-gpio@...r.kernel.org,
        GaryWang@...on.com.tw, musa.lin@...jingtech.com,
        jack.chang@...jingtech.com, chengwei <larry.lai@...jingtech.com>,
        Nicola Lunghi <nicola.lunghi@...tex.com>
Subject: Re: [PATCH 2/5] regmap: Expose regmap_writeable function to check if
 a register is writable

On Wed, Oct 19, 2022 at 10:24:47AM +0800, chengwei wrote:

> Expose the regmap_writeable function for pinctrl-upboard reference.

Why?  A driver should understand the register map of the device it is
controlling.

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