hw-probe device detection goodix touchscreen

[octocom]

Hi All,

I'm looking for some guidance please. I purchased a generic tablet with intel cpu and Windows 11 called a Tactus Mode GeoPad 220. I can run Linux no problem at all, but fails to detect a goodix GXTP7386 touchscreen on any distro or kernal as far as I can tell. I have tried to use HW-PROBE to see more info about how the device is detected under linux, but it fails detection. see Probehttps://linux-hardware.org/?probe=a7e3223fa6

can you advise if I can do anything else with this software for a low level detection or something? The only info I have about the device is from windows device manager under Human Interface Devices touch screen HID\VEN_GXTP&DEV_7386&cOL1 HID/VID_27C6&UP:000D_U:0004. To me the first part of the device id matches which is known under linux, but does not match the known 2nd part for the goodix 7386 device.

thanks

Luke

 

[octocom]

ok figured out its a ic2 device i2c-gxtp7386:00 and dumped the bios DSDT table, but still trying to figure out how to use the information for this pin?

Device (TCS4)
{
Name (_ADR, Zero) // _ADR: Address
Name (_HID, "GXTP7386") // _HID: Hardware ID
Name (_CID, "PNP0C50" /* HID Protocol Device (I2C bus) */) // _CID: Compatible ID
Name (_S0W, Zero) // _S0W: S0 Device Wake State
Method (_PS3, 0, Serialized) // _PS3: Power State 3
{
}

Method (_PS0, 0, Serialized) // _PS0: Power State 0
{
}

Method (_STA, 0, NotSerialized) // _STA: Status
{
If ((TCPL == 0x04))
{
Return (0x0F)
}

Return (Zero)
}

Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (WBUF, ResourceTemplate ()
{
I2cSerialBusV2 (0x005D, ControllerInitiated, 0x00061A80,
AddressingMode7Bit, "\\_SB.PCI0.I2C4",
0x00, ResourceConsumer, , Exclusive,
)
GpioInt (Edge, ActiveLow, Exclusive, PullDefault, 0x0000,
"\\_SB.GPO1", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x001A
}
GpioIo (Shared, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO0", 0x00, ResourceConsumer, ,
)
{ // Pin list
0x003A
}
})
Return (WBUF) /* \_SB_.PCI0.I2C4.TCS4._CRS.WBUF */
}

Method (_DSM, 4, Serialized) // _DSM: Device-Specific Method
{
If ((Arg0 == ToUUID ("3cdff6f7-4267-4555-ad05-b30a3d8938de") /* HID I2C Device */))
{
Switch (ToInteger (Arg2))
{
Case (Zero)
{
Switch (ToInteger (Arg1))
{
Case (One)
{
Return (Buffer (One)
{
0x03 // .
})
}
Default
{
Return (Buffer (One)
{
0x00 // .
})
}

}
}
Case (One)
{
Return (One)
}
Default
{
Return (Zero)
}

}
}
Else
{
Return (Buffer (One)
{
0x00 // .
})
}
}
}
}

 

[J.D]

Hi Luke,
Just wondered if you had managed to get the Geopad 220 working properly yet? I am considering getting one to run UbuntuMate.
Thanks
J.D.