linux-kernel - Re: [PATCH v1 02/11] drm/tegra: switch to using devm_fwnode_gpiod

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Message-ID: <CACRpkda0iUTV=71eQf5_FdKWLe3Bu=U+Zny9_uJJL=5xXtnrnQ@mail.gmail.com>
Date:   Mon, 5 Sep 2022 23:03:38 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Mathias Nyman <mathias.nyman@...el.com>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Matti Vaittinen <mazziesaccount@...il.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Felipe Balbi <balbi@...nel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Daniel Vetter <daniel@...ll.ch>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Marc Zyngier <maz@...nel.org>,
        Richard Weinberger <richard@....at>,
        David Airlie <airlied@...ux.ie>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Rob Herring <robh@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Pali Rohár <pali@...nel.org>,
        LINUXWATCHDOG <linux-watchdog@...r.kernel.org>,
        USB <linux-usb@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-pci <linux-pci@...r.kernel.org>,
        linux-tegra <linux-tegra@...r.kernel.org>,
        "open list:MEMORY TECHNOLOGY..." <linux-mtd@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
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        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v1 02/11] drm/tegra: switch to using devm_fwnode_gpiod_get

On Mon, Sep 5, 2022 at 9:37 PM Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> On Mon, Sep 05, 2022 at 01:57:01PM +0300, Andy Shevchenko wrote:
> > On Mon, Sep 5, 2022 at 9:32 AM Dmitry Torokhov
> > <dmitry.torokhov@...il.com> wrote:
> > >
> > > I would like to limit (or maybe even remove) use of
> > > [devm_]gpiod_get_from_of_node in drivers so that gpiolib can be cleaned
> > > a bit, so let's switch to the generic device property API.
> >
> > > It may even
> > > help with handling secondary fwnodes when gpiolib is taught to handle
> > > gpios described by swnodes.
> >
> > I would remove this sentence from all commit messages since it's a
> > debatable thing and might even not happen, so the above is a pure
> > speculation.
>
> I have the patches. Granted, I had them since '19 ;) but I'm rebasing
> them and going to push them. I need them to convert bunch of input
> drivers away from platform data.

That's good news!

Are you referring to this patch set mentioned in a discussion
from 2017 thru 2020?
https://lore.kernel.org/linux-input/20200826161222.GA1665100@dtor-ws/

I put aside GPIO descriptor conversion for input devices (keys, buttons)
in board files anticipating a swnode mechanism.

Yours,
Linus Walleij