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SubjectRe: [PATCH v2] USB: Serial: cypress_M8: Enable Simply Automated UPB PIM
On Tue, Jun 23, 2020 at 1:53 AM Johan Hovold <johan@kernel.org> wrote:
>
> On Mon, Jun 22, 2020 at 11:04:09AM -0600, James Hilliard wrote:
> > 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.
> > >
> > > 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 **
>
> Thanks for posting this.
>
> Don't you need to add this device to the HID driver's ignore list
> to prevent it from claiming the device (see hid_ignore_list) just like
> for the Cypress VID?
Ah, yeah, that does look to be needed, do you want to edit my patch or
should I send a follow up patch with that added?
>
> Johan

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