linux-kernel - Re: [RFC PATCH 0/9] Add support for Microsoft Surface System Aggregator Module

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Message-ID: <CAHp75Vc6ohuT_Ga=p-n+gKaVhPWE2EEbkhx-EQO_vKEtgmswqA@mail.gmail.com>
Date:   Fri, 25 Sep 2020 17:58:29 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Maximilian Luz <luzmaximilian@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh@...nel.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Blaž Hrastnik <blaz@...n.io>,
        Dorian Stoll <dorian.stoll@...p.io>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Darren Hart <dvhart@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [RFC PATCH 0/9] Add support for Microsoft Surface System
 Aggregator Module

On Thu, Sep 24, 2020 at 10:17 PM Maximilian Luz <luzmaximilian@...il.com> wrote:
> On 9/24/20 10:30 AM, Andy Shevchenko wrote:
> > On Wed, Sep 23, 2020 at 6:32 PM Arnd Bergmann <arnd@...db.de> wrote:
> >> On Wed, Sep 23, 2020 at 5:15 PM Maximilian Luz <luzmaximilian@...il.com> wrote:

...

> >> I think this should go to drivers/platform/x86 or drivers/platform/surface/
> >> along with other laptop vendor specific code rather than drivers/misc/.
> >
> > +1 here. drivers/platform/surface is a good place to start.
> > And you may begin with moving a few Surface drivers out of PDx86 to
> > the new folder.
>
> Perfect, thanks! I'll draft up a patch series over the weekend.
>
> A couple questions regarding structure and maintenance:
>
>   - Should I CC the platform-driver-x86 list on future submissions to
>     drivers/platform/surface? I.e. is this something you would want to
>     review if it doesn't touch the drivers/platform/x86 directory?

Include PDx86 mailing list to the list of that. Current SURFACE*
drivers have per driver record in MAINTAINERS IIRC. So, update them as
well if needed.

>   - How would you want the layout to be, specifically regarding to the
>     surface-aggregator stuff? My suggestion would be simply:
>
>     drivers/platform/surface/

>         surface_aggregator/

Don't repeat parts of the path, the aggregator is enough as a folder
name, but the driver of course should be in its own namespace
('surface').

>             Kconfig
>             Makefile
>             core.c
>             controller.c
>             ... (all core stuff built into the surface_aggregator module)
>         Kconfig
>         Makefile

>         surface_aggregator_debugfs.c

(Not sure why it's not a part of aggregator folder)

>         surface_acpi_notify.c
>         surface_*.c        (any other surface platform driver as well
>                             as drivers dependent on surface_aggregator)
>
>   - Regarding future things like HID transport driver, battery/AC driver:
>     Submit them to drivers/platform/surface or to their respective
>     subsystem directories?

Respective subsystem _if_ it is a subsystem related driver and not
kinda board file. Use common sense and existing examples.

-- 
With Best Regards,
Andy Shevchenko