I2C_HID 触摸板芯片数据读取

Recetly 我试图通过固件更新来修复我的触摸板滞后，但它粉碎了我的整个触摸板。现在移动是倒置的，右键单击不起作用。

我的触摸板是 ELAN1200 04F3:304E，是有史以来支持最差的触摸板之一。

不过，我还是抱有希望的。

我知道触摸板被识别为 I2C-HID 设备，如果我可以用程序升级它的固件，就可以读取数据并将数据写入触摸板的芯片。

所以我正在尝试查找已连接的 i2c 设备，但 i2cdetect -l 没有运气。我的 lsusb 也不显示触摸板：

$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0b05:1869 ASUSTek Computer, Inc. 
Bus 001 Device 004: ID 13d3:5666 IMC Networks 
Bus 001 Device 003: ID 8087:0a2b Intel Corp. 
Bus 001 Device 002: ID 09da:7dc8 A4Tech Co., Ltd. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

虽然 xinput 识别它：

$ xinput
⎡ Virtual core pointer                      id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ COMPANY USB Device                        id=13   [slave  pointer  (2)]
⎜   ↳ COMPANY USB Device Consumer Control       id=16   [slave  pointer  (2)]
⎜   ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control  id=19   [slave  pointer  (2)]
⎜   ↳ ELAN1200:00 04F3:304E Touchpad            id=22   [slave  pointer  (2)]
⎣ Virtual core keyboard                     id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Asus Wireless Radio Control               id=7    [slave  keyboard (3)]
    ↳ Video Bus                                 id=8    [slave  keyboard (3)]
    ↳ Video Bus                                 id=9    [slave  keyboard (3)]
    ↳ Power Button                              id=10   [slave  keyboard (3)]
    ↳ Sleep Button                              id=11   [slave  keyboard (3)]
    ↳ COMPANY USB Device                        id=12   [slave  keyboard (3)]
    ↳ COMPANY USB Device Keyboard               id=14   [slave  keyboard (3)]
    ↳ COMPANY USB Device System Control         id=15   [slave  keyboard (3)]
    ↳ USB2.0 HD UVC WebCam: USB2.0 HD           id=17   [slave  keyboard (3)]
    ↳ ITE Tech. Inc. ITE Device(8910) Keyboard  id=18   [slave  keyboard (3)]
    ↳ ITE Tech. Inc. ITE Device(8910) Wireless Radio Control    id=20   [slave  keyboard (3)]
    ↳ ITE Tech. Inc. ITE Device(8910) System Control    id=21   [slave  keyboard (3)]
    ↳ Asus WMI hotkeys                          id=23   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=24   [slave  keyboard (3)]
    ↳ COMPANY USB Device Consumer Control       id=25   [slave  keyboard (3)]
    ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control  id=26   [slave  keyboard (3)]

我用来升级触摸板固件的程序在这里https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1653456/comments/161

我有兴趣从工作的触摸板芯片复制数据并将其粘贴到我的。我该怎么做？