linux-kernel - Re: [RFC/PATCH 0/5] Support children for legacy device properties

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Message-ID: <CAHp75VcguYVeKMLGZ-S2JTvY0omSbBpjeqGNby+SzVqUoNdQiw@mail.gmail.com>
Date:   Tue, 18 Sep 2018 07:23:40 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        linux-input <linux-input@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [RFC/PATCH 0/5] Support children for legacy device properties

On Mon, Sep 17, 2018 at 9:18 PM Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
>
> The generic device properties APIs are very helpful as they allow abstracting
> away details of the platform (whether it is ACPI, device tree, or legacy board
> file), so that individual driver does not need separate code paths to support
> all variants. However there are drivers that currently can not use generic
> device properties API as they need notion of children properties, for example
> gpio_keys driver, that expects every button to be described as a sub-node of
> main device.
>
> This patch series introduces notion of sub-nodes for static properties and ties
> it up with GPIO lookup tables so that they are usable with sub-nodes as well.

I like the idea.
Though, I Cc'ed this to Mika and Sakari who might be interested to see
and, perhaps, comment on it.

>
> Thanks.
>
> --
> Dmitry
>


-- 
With Best Regards,
Andy Shevchenko