Change hidraw device from mouse to joystick

Question

I have a wireless PS3 controller adapter that is plugged in to my Ubuntu 14.04 box. It has 2 modes: XInput and DInput, which as far as I can tell, it just passes two different vendor/product id's over USB (XInput has a Microsoft XBOX id, the other is generic). The XInput mode works fine (loads xpad driver), but in the DInput mode the kernel identifies the device as a mouse, instead of as a joystick.

Related Questions:

What do I need to change to make it identify as a joystick?

How does the usbhid driver assign minor numbers to a character device?

dmesg

[ 1692.151837] usb 3-1: new full-speed USB device number 8 using ohci-pci
[ 1692.325523] usb 3-1: New USB device found, idVendor=0079, idProduct=1801
[ 1692.325528] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1692.325530] usb 3-1: Product: Mayflash PS3 Game Controller Adapater
[ 1692.325531] usb 3-1: Manufacturer: HJZ
[ 1692.341586] input: HJZ Mayflash PS3 Game Controller Adapater as /devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input14
[ 1692.341854] hid-generic 0003:0079:1801.0006: input,hidraw3: USB HID v1.11 Joystick [HJZ Mayflash PS3 Game Controller Adapater] on usb-0000:00:12.0-1/input0

sudo udevadm info --path=/devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input14

P: /devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input14
E: ABS=ffffff
E: DEVPATH=/devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input14
...
E: ID_INPUT_TABLET=1
E: ID_MODEL=Mayflash_PS3_Game_Controller_Adapater
...
E: ID_TYPE=hid
E: ID_USB_DRIVER=usbhid

ll /dev/input/by-id/

lrwxrwxrwx 1 root root   9 May  8 16:18 usb-HJZ_Mayflash_PS3_Game_Controller_Adapater-event-mouse -> ../event4
lrwxrwxrwx 1 root root   9 May  8 16:18 usb-HJZ_Mayflash_PS3_Game_Controller_Adapater-mouse -> ../mouse1

sudo udevadm monitor --property --kernel --udev

...
KERNEL[1693.830143] add      /devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input14/mouse1 (input)
ACTION=add
DEVNAME=/dev/input/mouse1
DEVPATH=/devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input14/mouse1
MAJOR=13
MINOR=33
SEQNUM=2196
SUBSYSTEM=input
UDEV_LOG=7
...

Update

In my quest for knowledge, I found a site that lists the Major/Minor numbers for the usbhid driver. As you can see below, my device is 13,32, which is reserved by the driver for mouse0. It would appear that I need to trick(?) the driver into assigning a different Minor number to it? ...or am I headed down the wrong path? (Admittedly, I'm more familiar with Windows driver dev, than linux)

Reference

USB device number mappings
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 13 char    Input drivers
      0 = /dev/input/js0    First joystick
      1 = /dev/input/js1    Second joystick 
        ...
     32 = /dev/input/mouse0 First mouse 
     33 = /dev/input/mouse1 Second mouse

ls -l /dev/input/

crw-r-----   1 root root 13, 32 May  9 11:48 mouse0

lsusb -v

Bus 003 Device 003: ID 0079:1801 DragonRise Inc.
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0079 DragonRise Inc.
  idProduct          0x1801
  bcdDevice            1.00
  iManufacturer           1 HJZ
  iProduct                2 Mayflash PS3 Game Controller Adapater
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           34
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     428
         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               1
Device Status:     0x0002
  (Bus Powered)
  Remote Wakeup Enabled

Answer 1

The HID system checks for a specialized driver matching the vendor and product ids, and if there is none it is treated as a generic HID device : the descriptors sent by the device are used to determine what it is.

In your case there is a specialized hid driver, but it looks like it wasn't loaded. You can try modprobe hid-dr, but you probably don't have it installed. On Ubuntu, it is in the linux-image-extra package.