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From:   James Hilliard <james.hilliard1@gmail.com>
Date:   Mon, 22 Jun 2020 11:09:51 -0600
Message-ID: <CADvTj4p6j1bJ8jK5t_nQC9uVRLJn_Fi07-DUu8yQvqM3ymdWMg@mail.gmail.com>
Subject: Re: [PATCH v2] USB: Serial: cypress_M8: Enable Simply Automated UPB PIM
To:     Johan Hovold <johan@kernel.org>
Cc:     linux-usb@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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On Mon, Jun 22, 2020 at 2:53 AM Johan Hovold <johan@kernel.org> wrote:
>
> On Tue, Jun 16, 2020 at 04:04:03PM -0600, James Hilliard wrote:
> > This is a UPB(Universal Powerline Bus) PIM(Powerline Interface Module)
> > which allows for controlling multiple UPB compatible devices from
> > Linux using the standard serial interface.
> >
> > Based on vendor application source code there are two different models
> > of USB based PIM devices in addition to a number of RS232 based PIM's.
> >
> > The vendor UPB application source contains the following USB ID's:
> > #define USB_PCS_VENDOR_ID 0x04b4
> > #define USB_PCS_PIM_PRODUCT_ID 0x5500
> >
> > #define USB_SAI_VENDOR_ID 0x17dd
> > #define USB_SAI_PIM_PRODUCT_ID 0x5500
> >
> > The first set of ID's correspond to the PIM variant sold by Powerline
> > Control Systems while the second corresponds to the Simply Automated
> > Incorporated PIM. As the product ID for both of these match the default
> > cypress HID->COM RS232 product ID it assumed that they both use an
> > internal variant of this HID->COM RS232 converter hardware. However
> > as the vendor ID for the Simply Automated variant is different we need
> > to also add it to the cypress_M8 driver so that it is properly
> > detected.
> >
> > Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
> > ---
> > Changes v1 -> v2:
> >   - Add more detailed commit message.
>
> Now applied, thanks.
Oh, FYI I think part of the comment got dropped when you amended the patch
I don't see the defines in the comment here:
https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git/commit/?h=usb-linus&id=7527d963dff544b0ddfba4319824c50f2a892aeb

I think I had to temporarily change my git config with this to make it not drop
the defines:
git config core.commentchar "*"
>
> Would you mind posting the output of "lsusb -v" for this device for
> completeness?
>
> Johan