linux-kernel - Re: [PATCH v2] USB: Serial: cypress_M8: Enable Simply Automated UPB PIM

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Date:   Mon, 22 Jun 2020 11:04:09 -0600
From:   James Hilliard <james.hilliard1@...il.com>
To:     Johan Hovold <johan@...nel.org>
Cc:     linux-usb@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v2] USB: Serial: cypress_M8: Enable Simply Automated UPB PIM

On Mon, Jun 22, 2020 at 2:53 AM Johan Hovold <johan@...nel.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@...il.com>
> > ---
> > Changes v1 -> v2:
> >   - Add more detailed commit message.
>
> Now applied, thanks.
>
> Would you mind posting the output of "lsusb -v" for this device for
> completeness?
Bus 001 Device 004: ID 17dd:5500
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.00
  bDeviceClass            0
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x17dd
  idProduct          0x5500
  bcdDevice            0.00
  iManufacturer           1 Simply Automated Inc.
  iProduct                2 USB to Serial
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0029
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 Sample HID
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      37
         Report Descriptors:
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)
>
> Johan