Adding new usbserial device

[Anton Avramov <lukav@xxxxxxxxx>]

Hello, 

I have a new device in my possession that works with usbserial generic
driver. 
In order for it to work I execute: 
modprobe usbserial
echo fff0 0100 > /sys/bus/usb-serial/drivers/generic/new_id 

I'm writing to you since dmesg reads: 
[ 1674.626941] usbserial_generic 4-2:1.0: Generic device with no bulk
out, not allowed.
[ 1674.626972] usbserial_generic: probe of 4-2:1.0 failed with error -5
[ 1674.626991] usbserial_generic 4-2:1.1: The "generic" usb-serial
driver is only for testing and one-off prototypes.
[ 1674.626997] usbserial_generic 4-2:1.1: Tell linux-usb@xxxxxxxxxxxxxx
g to add your device to a proper driver.
[ 1674.627002] usbserial_generic 4-2:1.1: generic converter detected
[ 1674.627276] usb 4-2: generic converter now attached to ttyUSB0

One problem that I have discovered so far is that statserial cannot
query the device pins: 

/usr/bin/statserial -d /dev/ttyUSB0
statserial: TIOCMGET failed: Invalid argument


Here is a walk on the usb device itself

  looking at device '/devices/pci0000:00/0000:00:04.0/usb4/4-2/4-
2:1.1/ttyUSB0/tty/ttyUSB0':
    KERNEL=="ttyUSB0"
    SUBSYSTEM=="tty"
    DRIVER==""

  looking at parent device '/devices/pci0000:00/0000:00:04.0/usb4/4-
2/4-2:1.1/ttyUSB0':
    KERNELS=="ttyUSB0"
    SUBSYSTEMS=="usb-serial"
    DRIVERS=="generic"
    ATTRS{port_number}=="0"

  looking at parent device '/devices/pci0000:00/0000:00:04.0/usb4/4-
2/4-2:1.1':
    KERNELS=="4-2:1.1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usbserial_generic"
    ATTRS{bInterfaceClass}=="0a"
    ATTRS{bInterfaceSubClass}=="00"
    ATTRS{bInterfaceProtocol}=="00"
    ATTRS{bNumEndpoints}=="02"
    ATTRS{supports_autosuspend}=="1"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bInterfaceNumber}=="01"

  looking at parent device '/devices/pci0000:00/0000:00:04.0/usb4/4-2':
    KERNELS=="4-2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{devpath}=="2"
    ATTRS{idVendor}=="fff0"
    ATTRS{speed}=="12"
    ATTRS{bNumInterfaces}==" 2"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{busnum}=="4"
    ATTRS{devnum}=="2"
    ATTRS{configuration}==""
    ATTRS{bMaxPower}=="0mA"
    ATTRS{authorized}=="1"
    ATTRS{bmAttributes}=="c0"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{maxchild}=="0"
    ATTRS{bcdDevice}=="0100"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{quirks}=="0x0"
    ATTRS{serial}=="DT653794"
    ATTRS{version}==" 1.01"
    ATTRS{urbnum}=="42"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="DATECS"
    ATTRS{removable}=="unknown"
    ATTRS{idProduct}=="0100"
    ATTRS{bDeviceClass}=="02"
    ATTRS{product}=="Fiscal Printer FP-2000"

  looking at parent device '/devices/pci0000:00/0000:00:04.0/usb4':
    KERNELS=="usb4"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{devpath}=="0"
    ATTRS{idVendor}=="1d6b"
    ATTRS{speed}=="12"
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{authorized_default}=="1"
    ATTRS{busnum}=="4"
    ATTRS{devnum}=="1"
    ATTRS{configuration}==""
    ATTRS{bMaxPower}=="0mA"
    ATTRS{authorized}=="1"
    ATTRS{bmAttributes}=="e0"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{maxchild}=="6"
    ATTRS{bcdDevice}=="0316"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{quirks}=="0x0"
    ATTRS{serial}=="0000:00:04.0"
    ATTRS{version}==" 1.10"
    ATTRS{urbnum}=="45"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="Linux 3.16.0-4-amd64 ohci_hcd"
    ATTRS{removable}=="unknown"
    ATTRS{idProduct}=="0001"
    ATTRS{bDeviceClass}=="09"
    ATTRS{product}=="OHCI PCI host controller"

  looking at parent device '/devices/pci0000:00/0000:00:04.0':
    KERNELS=="0000:00:04.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="ohci-pci"
    ATTRS{irq}=="21"
    ATTRS{subsystem_vendor}=="0x1043"
    ATTRS{broken_parity_status}=="0"
    ATTRS{class}=="0x0c0310"
    ATTRS{driver_override}=="(null)"
    ATTRS{consistent_dma_mask_bits}=="32"
    ATTRS{dma_mask_bits}=="32"
    ATTRS{local_cpus}=="00000000,00000000,00000000,00000000,00000000,00
000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,0
0000000,00000000,00000003"
    ATTRS{device}=="0x055e"
    ATTRS{enable}=="1"
    ATTRS{msi_bus}==""
    ATTRS{local_cpulist}=="0-1"
    ATTRS{vendor}=="0x10de"
    ATTRS{subsystem_device}=="0x82b3"
    ATTRS{numa_node}=="0"
    ATTRS{d3cold_allowed}=="1"

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""


Please advice on next steps? 
May probe a specific device?

Best regards

-- 
Anton Avramov <lukav@xxxxxxxxx>
-- 
Anton Avramov <lukav@xxxxxxxxx>
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