linux-kernel - Re: [PATCH v1 5/5] regmap: mmio: Introduce IO accessors that can talk to IO port

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Message-ID: <CAHp75VdAhm2vvof_WMTgqaV6SARYOtgPfhVA=MntEs7qBFXnjA@mail.gmail.com>
Date:   Fri, 5 Aug 2022 23:22:53 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        William Breathitt Gray <william.gray@...aro.org>
Cc:     Mark Brown <broonie@...nel.org>,
        Aidan MacDonald <aidanmacdonald.0x0@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH v1 5/5] regmap: mmio: Introduce IO accessors that can talk
 to IO port

On Fri, Aug 5, 2022 at 11:14 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> Currently regmap MMIO is inconsistent with IO accessors. I.e.
> the Big Endian counterparts are using ioreadXXbe() / iowriteXXbe()
> which are not clean implementations of readXXbe(). Besides that
> some users may use regmap MMIO for IO ports, and this can be done
> by assigning ioreadXX()/iowriteXX() and their Big Endian counterparts
> to the regmap context.
>
> That said, reimplement current Big Endian MMIO accessors by replacing
> ioread()/iowrite() with respective read()/write() and swab() calls.
> While at it, add IO port support with a corresponding flag added.

William, I believe this series allows you to switch PC104 drivers to use regmap.

-- 
With Best Regards,
Andy Shevchenko