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 13:57:17 +0200 [thread overview]
Message-ID: <ebbbe74fe638e1a6ab7c1547870f4b31@walle.cc> (raw)
In-Reply-To: <CAHp75VdmTxvQBU4X8s-6csYgwM8ACth9Ao0GYjUH7+0Q0tyFyg@mail.gmail.com>
Am 2021-04-28 13:07, schrieb Andy Shevchenko:
> On Wed, Apr 28, 2021 at 1:51 AM Michael Walle <michael@walle.cc> wrote:
>> 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.
>
> I don't see how it is an impediment.
You'd have to use the *_cansleep() variants with the gpios,
which cannot be used everywhere, no?
-michael
next prev parent reply other threads:[~2021-04-28 11:57 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
2021-04-28 11:07 ` Andy Shevchenko
2021-04-28 11:57 ` Michael Walle [this message]
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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