Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20221017170600.88480-1-andriy.shevchenko@linux.intel.com>
In-Reply-To: <20221017170600.88480-1-andriy.shevchenko@linux.intel.com>
From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Tue, 18 Oct 2022 10:29:13 +0200
Message-ID: <CACRpkdbNkPG5KsB47jByseDh=nOt+J2eE_nh5EJqRLAPDp8v8A@mail.gmail.com>
Subject: Re: [PATCH v1 1/1] gpio: exar: Allow IO port access
To:     Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        William Gray <william.gray@linaro.org>
Cc:     Qingtao Cao <qingtao.cao.au@gmail.com>, linux-gpio@vger.kernel.org,
        linux-kernel@vger.kernel.org, Bartosz Golaszewski <brgl@bgdev.pl>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Mon, Oct 17, 2022 at 7:05 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:

> It's possible that PCI device can provide an IO port resource for
> the device. regmap MMIO currently uses MMIO by default. With an
> additional flag we enable support for IO port accesses.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Looks clever to me!
Acked-by: Linus Walleij <linus.walleij@linaro.org>
I would let William have a look at it as well, as he's worked extensively
with port-mapped I/O.

Yours,
Linus Walleij