How to make the interrupt function working on Windows 10?

joseph_hsiao · March 27

Hi,

I'm developing Windows 10 device driver on UP2 board. My driver needs the interrupt function to report data to Windows. I set pin16 of HAT40 (GPIO19) as the interrupt pin in BIOS and ASL code:

GpioInt(Level, ActiveLow, Exclusive, PullNone, 0, "\\_SB.GPO0", ) {0x13}

But my driver never receives interrupt with this configuration. Besides, I found no GPIO controller is shown in System devices of Device Manager. Could you please advise how to make the interrupt function working on Windows 10?

joseph_hsiao · April 2

After further checking DSDT table, I found why GPIO controller is not shown in Device Manager - the _STA method returns 0x0B.
Any reason for doing so?

Device (GPO0)
{
    Name (_ADR, Zero)  // _ADR: Address
    Name (_HID, "INT3452")  // _HID: Hardware ID
    Name (_CID, "INT3452")  // _CID: Compatible ID
    Name (_DDN, "General Purpose Input/Output (GPIO) Controller - North")  // _DDN: DOS Device Name
    Name (_UID, One)  // _UID: Unique ID
    Name (LINK, "\\_SB.GPO0")
    Name (RBUF, ResourceTemplate ()
    {
        Memory32Fixed (ReadWrite,
            0x00000000,         // Address Base
            0x00004000,         // Address Length
            _Y07)
        Interrupt (ResourceConsumer, Level, ActiveLow, Shared, ,, )
        {
            0x0000000E,
        }
    })
    Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
    {
        CreateDWordField (RBUF, \_SB.GPO0._Y07._BAS, B0BA)  // _BAS: Base Address
        CreateDWordField (RBUF, \_SB.GPO0._Y07._LEN, B0LN)  // _LEN: Length
        B0BA = GP0A /* \GP0A */
        B0LN = GP0L /* \GP0L */
        Return (RBUF) /* \_SB_.GPO0.RBUF */
    }

    Method (_STA, 0, NotSerialized)  // _STA: Status
    {
        Return (0x0B)
    }
                     :

How to make the interrupt function working on Windows 10?

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