RE: How to use an ACPI declared GPIO in a userspace ...

Flavio Suligoi
2020-10-02T10:02:24Z

Hi Andy,

sorry for the delay!

> > > My SSDT table is:
> >
> > ^^^^ See the difference? I can't help here.

This is the DSDT table related to the GPIO controller of my board:

Device (GPO1)
{
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 - Northwest") // _DDN: DOS Device Name
Name (_UID, 0x02) // _UID: Unique ID
Name (RBUF, ResourceTemplate ()
{
Memory32Fixed (ReadWrite,
0x00000000, // Address Base
0x00004000, // Address Length
_Y08)
Interrupt (ResourceConsumer, Level, ActiveLow, Shared, ,, )
{
0x0000000E,
}
})
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
CreateDWordField (RBUF, \_SB.GPO1._Y08._BAS, B0BA) // _BAS: Base Address
CreateDWordField (RBUF, \_SB.GPO1._Y08._LEN, B0LN) // _LEN: Length
B0BA = GP1A /* \GP1A */
B0LN = GP1L /* \GP1L */
Return (RBUF) /* \_SB_.GPO1.RBUF */
}

Method (_STA, 0, NotSerialized) // _STA: Status
{
If ((OSYS < 0x07DC))
{
Return (Zero)
}

Return (0x0F)
}
}

> --
> With Best Regards,
> Andy Shevchenko

Best regards,

Flavio