From: Michael Walle <michael@walle.cc>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>
Subject: Re: [PATCH v4 1/2] gpio: Add support for IDT 79RC3243x GPIO controller
Date: Wed, 28 Apr 2021 00:51:41 +0200 [thread overview]
Message-ID: <6f6bce2f070998db49acca2f6611727b@walle.cc> (raw)
In-Reply-To: <CAHp75VdRfPPj2pu4GOBVG4+bGUsCRLXYPsFjMwFOYfUTZuvJaQ@mail.gmail.com>
Hi,
Am 2021-04-26 12:29, schrieb Andy Shevchenko:
> On Mon, Apr 26, 2021 at 12:55 PM Thomas Bogendoerfer
> <tsbogend@alpha.franken.de> wrote:
>
> 2) there is gpio-regmap generic code, that may be worth
> considering.
This driver uses memory mapped registers. While that is
also possible with gpio-regmap, there is one drawback:
it assumes gpiochip->can_sleep = true for now, see [1].
Unfortunately, there is no easy way to ask the regmap
if its mmio/fastio.
-michael
[1]
https://elixir.bootlin.com/linux/v5.12/source/drivers/gpio/gpio-regmap.c#L257
next prev parent reply other threads:[~2021-04-27 22:51 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-26 9:54 [PATCH v4 1/2] gpio: Add support for IDT 79RC3243x GPIO controller Thomas Bogendoerfer
2021-04-26 9:54 ` [PATCH v4 2/2] dt-bindings: gpio: Add devicetree binding for IDT 79RC32434 " Thomas Bogendoerfer
2021-04-30 20:19 ` Rob Herring
2021-05-01 12:13 ` Linus Walleij
2021-05-04 13:44 ` Rob Herring
2021-05-06 11:11 ` Linus Walleij
2021-05-11 21:13 ` Thomas Bogendoerfer
2021-04-26 10:29 ` [PATCH v4 1/2] gpio: Add support for IDT 79RC3243x " Andy Shevchenko
2021-04-27 22:51 ` Michael Walle [this message]
2021-04-28 11:07 ` Andy Shevchenko
2021-04-28 11:57 ` Michael Walle
2021-04-28 13:44 ` Andy Shevchenko
2021-04-28 14:04 ` Michael Walle
2021-04-28 14:32 ` Andy Shevchenko
2021-04-28 14:48 ` Michael Walle
2021-04-28 15:02 ` Andy Shevchenko
2021-04-28 15:07 ` Michael Walle
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