linux-kernel - Re: [PATCH v7 0/6] Add support for the IEI WT61P803 PUZZLE MCU

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Date:   Sun, 1 Nov 2020 10:56:20 +0100
From:   Luka Kovacic <luka.kovacic@...tura.hr>
To:     Pavel Machek <pavel@....cz>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-hwmon@...r.kernel.org,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Lee Jones <lee.jones@...aro.org>, Dan Murphy <dmurphy@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Marek Behun <marek.behun@....cz>,
        Luka Perkov <luka.perkov@...tura.hr>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Robert Marko <robert.marko@...tura.hr>
Subject: Re: [PATCH v7 0/6] Add support for the IEI WT61P803 PUZZLE MCU

Hello Pavel,

On Thu, Oct 29, 2020 at 7:01 PM Pavel Machek <pavel@....cz> wrote:
>
> Hi!
>
> > +What:                /sys/bus/serial/devices/.../iei_wt61p803_puzzle_core/power_status
> > +Date:                September 2020
> > +Contact:     Luka Kovacic <luka.kovacic@...tura.hr>
> > +Description: (RO) Power status indicates the host platform power on method.
> > +             Value mapping (bitwise list):
> > +             0x80 - Null
> > +             0x40 - Firmware flag
> > +             0x20 - Power loss detection flag (powered off)
> > +             0x10 - Power loss detection flag (AC mode)
> > +             0x08 - Button power on
> > +             0x04 - WOL power on
> > +             0x02 - RTC alarm power on
> > +             0x01 - AC recover power on
>
> It would be nice to put this into standard place somewhere. Many
> machines will want to expose this information.

As this is specific to this microcontroller and to how it encodes
these values, I don't see a need to change this.
This isn't used anywhere else.

>
> If not, at least spell out WoL, as it is not that common of acronym.

Okay.

>
> > +What:                /sys/bus/serial/devices/.../iei_wt61p803_puzzle_core/ac_recovery_status
> > +Date:                September 2020
> > +Contact:     Luka Kovacic <luka.kovacic@...tura.hr>
> > +Description: (RO) Host platform AC recovery status value
>
> I can not tell what this is from documentation...

I'll expand the description.

>
> Best regards,
>                                                                 Pavel
>
> --
> http://www.livejournal.com/~pavelmachek

Kind regards,
Luka