Re: [PATCH 1/1] Force ELAN06FA touchpad I2C bus freq to 100KHz

[R Ha <rha051117@xxxxxxxxx>]

Hello,

On Tue, Jan 7, 2025 at 11:51 PM Mika Westerberg
<mika.westerberg@xxxxxxxxxxxxxxx> wrote:
> There should be Device() node for that too. The ones you listed are just
> child devices connected to that bus.

You're right, after searching for Device nodes I was able to find this
snippet. But it doesn't seem to have anything related to HCNT/LCNT
values either, but maybe they're hidden somewhere.
Thanks for the tip again.

Scope (_SB.PC00)
{
    Scope (\_SB.PC00)
    {
        Method (SOD3, 3, Serialized)
        {
            OperationRegion (ICB1, SystemMemory, (GPCB () + Arg0), 0x88)
            If (Arg1)
            {
                Field (ICB1, ByteAcc, NoLock, Preserve)
                {
                    Offset (0x84),
                    PMEC,   8
                }

                PMEC = 0x03
                PMEC |= Zero
            }

            If ((Arg1 && Arg2))
            {
                Field (ICB1, AnyAcc, NoLock, Preserve)
                {
                    Offset (0x10),
                    BAR0,   64
                }

                BAR0 = Zero
            }
        }
    }

    Method (I2CH, 1, Serialized)
    {
        OperationRegion (ICB1, SystemMemory, Arg0, 0x20)
        Field (ICB1, AnyAcc, NoLock, Preserve)
        {
            Offset (0x10),
            BAR0,   64,
            BAR1,   64
        }

        Name (BUF0, ResourceTemplate ()
        {
            Memory32Fixed (ReadWrite,
                0x00000000,         // Address Base
                0x00001000,         // Address Length
                _Y2B)
        })
        Name (BUF1, ResourceTemplate ()
        {
            Memory32Fixed (ReadWrite,
                0x00000000,         // Address Base
                0x00001000,         // Address Length
                _Y2C)
        })
        CreateDWordField (BUF0, \_SB.PC00.I2CH._Y2B._BAS, ADR0)  //
_BAS: Base Address
        CreateDWordField (BUF1, \_SB.PC00.I2CH._Y2C._BAS, ADR1)  //
_BAS: Base Address
        ADR0 = (BAR0 & 0xFFFFFFFFFFFFF000)
        ADR1 = (BAR1 & 0xFFFFFFFFFFFFF000)
        ConcatenateResTemplate (BUF0, BUF1, Local0)
        Return (Local0)
    }

    Device (I2C0)
    {
        If ((IM00 == 0x02))
        {
            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
            {
                Return (I2CH (IC00))
            }

            Name (_STA, 0x08)  // _STA: Status
        }

        If ((IM00 == One))
        {
            Method (_DSM, 4, Serialized)  // _DSM: Device-Specific Method
            {
                If (PCIC (Arg0))
                {
                    Return (PCID (Arg0, Arg1, Arg2, Arg3))
                }

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

            Method (_PS3, 0, NotSerialized)  // _PS3: Power State 3
            {
                SOD3 (IC00, One, One)
            }

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

        If (((IM00 == One) || (IM00 == Zero)))
        {
            Method (_ADR, 0, NotSerialized)  // _ADR: Address
            {
                Return (0x00150000)
            }
        }
    }

    [...I2C1-7 nodes removed]

    Method (SPIH, 1, Serialized)
    {
        OperationRegion (ICB1, SystemMemory, Arg0, 0x20)
        Field (ICB1, AnyAcc, NoLock, Preserve)
        {
            Offset (0x10),
            BAR0,   64,
            BAR1,   64
        }

        Name (BUF0, ResourceTemplate ()
        {
            Memory32Fixed (ReadWrite,
                0x00000000,         // Address Base
                0x00001000,         // Address Length
                _Y2D)
        })
        Name (BUF1, ResourceTemplate ()
        {
            Memory32Fixed (ReadWrite,
                0x00000000,         // Address Base
                0x00001000,         // Address Length
                _Y2E)
        })
        CreateDWordField (BUF0, \_SB.PC00.SPIH._Y2D._BAS, ADR0)  //
_BAS: Base Address
        CreateDWordField (BUF1, \_SB.PC00.SPIH._Y2E._BAS, ADR1)  //
_BAS: Base Address
        ADR0 = (BAR0 & 0xFFFFFFFFFFFFF000)
        ADR1 = (BAR1 & 0xFFFFFFFFFFFFF000)
        ConcatenateResTemplate (BUF0, BUF1, Local0)
        Return (Local0)
    }

    [...SPI nodes removed]
}