linux-kernel - Re: [PATCH v2] usb: typec: Expose Product Type VDOs via sysfs

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Message-ID: <CACeCKac-kfL_thmNRWs8sfj8TszNbrGZk2qptrJ1DLeuwQ9QCQ@mail.gmail.com>
Date:   Fri, 23 Oct 2020 14:52:23 -0700
From:   Prashant Malani <pmalani@...omium.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:USB NETWORKING DRIVERS" <linux-usb@...r.kernel.org>,
        Benson Leung <bleung@...omium.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Subject: Re: [PATCH v2] usb: typec: Expose Product Type VDOs via sysfs

On Thu, Oct 22, 2020 at 12:13 AM Prashant Malani <pmalani@...omium.org> wrote:
>
> Thanks for reviewing the patch, Greg.
>
> On Wed, Oct 21, 2020 at 11:56 PM Greg KH <gregkh@...uxfoundation.org> wrote:
> >
> > >
> > > +What:                /sys/class/typec/<port>-cable/identity/product_type_vdo
> > > +Date:                October 2020
> > > +Contact:     Prashant Malani <pmalani@...omium.org>
> > > +Description:
> > > +             Product Type VDOs part of Discover Identity command result. 3 values
> > > +             are displayed (for the 3 possible Product Type VDOs), one per line.
> > > +             The values will show 0s until Discover Identity command result becomes
> > > +             available. The values can be polled.
> >
> > Why are you describing the same value in two different locations?
>
> Both cable and partner can have Discover Identity VDOs and they are
> listed separately in sysfs.
> The other VDOs (id_header, cert_stat and product) have separate
> descriptions for cable and partner too.
> Perhaps there is a case for consolidating the listings here (factor
> out the ones which are common to cable and partner).
>

Just an update: I added a patch to the series which consolidates these
repeat identity entries into 1 location:
https://lore.kernel.org/linux-usb/20201023214328.1262883-1-pmalani@chromium.org/

Thanks and best regards,