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New Fan Control DSDT - for silent fan at higher temps!

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Joined
Feb 13, 2011
Messages
394
Motherboard
Asus Vivobook S15 / x510UAR
CPU
i5-8250U
Graphics
UHD 620
Mobile Phone
  1. Android
Probably it is being used. Easy to check for FCPU in ACPI add-ons/patches.
Great. How does that look? ACPI/patched/:
Code:
/*
 * Intel ACPI Component Architecture
 * AML/ASL+ Disassembler version 20181031 (64-bit version)
 * Copyright (c) 2000 - 2018 Intel Corporation
 * 
 * Disassembling to symbolic ASL+ operators
 *
 * Disassembly of iASLtDUmyj.aml, Mon Mar 11 09:52:16 2019
 *
 * Original Table Header:
 *     Signature        "SSDT"
 *     Length           0x000003B8 (952)
 *     Revision         0x02
 *     Checksum         0xF2
 *     OEM ID           "hack"
 *     OEM Table ID     "fan"
 *     OEM Revision     0x00000000 (0)
 *     Compiler ID      "INTL"
 *     Compiler Version 0x20180427 (538444839)
 */
DefinitionBlock ("", "SSDT", 2, "hack", "fan", 0x00000000)
{
    External (_SB_.PCI0.LPCB.EC0_.ECAV, MethodObj)    // 0 Arguments
    External (_SB_.PCI0.LPCB.EC0_.ECPU, FieldUnitObj)
    External (_SB_.PCI0.LPCB.EC0_.ST83, MethodObj)    // 1 Arguments
    External (_SB_.PCI0.LPCB.EC0_.ST98, MethodObj)    // 1 Arguments
    External (_SB_.PCI0.LPCB.EC0_.TACH, MethodObj)    // 1 Arguments

    Device (ANKD)
    {
        Name (_HID, "ANKD0000")  // _HID: Hardware ID
        Name (UCFC, One)
    }

    Device (SMCD)
    {
        Name (_HID, "FAN00000")  // _HID: Hardware ID
        Name (TACH, Package (0x02)
        {
            "System Fan", 
            "FAN0"
        })
        Name (TEMP, Package (0x02)
        {
            "CPU Heatsink", 
            "TCPU"
        })
        Method (FAN0, 0, NotSerialized)
        {
            If (\_SB.PCI0.LPCB.EC0.ECAV ())
            {
                Local0 = \_SB.PCI0.LPCB.EC0.ST83 (Zero)
                If ((Local0 == 0xFF))
                {
                    Return (Local0)
                }

                Local0 = \_SB.PCI0.LPCB.EC0.TACH (Zero)
            }
            Else
            {
                Local0 = Zero
            }

            Return (Local0)
        }

        Method (TCPU, 0, NotSerialized)
        {
            If (\_SB.PCI0.LPCB.EC0.ECAV ())
            {
                Local0 = \_SB.PCI0.LPCB.EC0.ECPU /* External reference */
                Local1 = 0x3C
                If ((Local0 < 0x80))
                {
                    Local1 = Local0
                }
            }
            Else
            {
                Local1 = Zero
            }

            Return (Local1)
        }

        Name (FTA1, Package (0x16)
        {
            0x20, 
            0x21, 
            0x22, 
            0x23, 
            0x24, 
            0x25, 
            0x26, 
            0x27, 
            0x28, 
            0x29, 
            0x2A, 
            0x2B, 
            0x2C, 
            0x2D, 
            0x2E, 
            0x2F, 
            0x30, 
            0x31, 
            0x32, 
            0x33, 
            0x34, 
            0xFF
        })
        Name (FTA2, Package (0x16)
        {
            Zero, 
            0x0A, 
            0x14, 
            0x1E, 
            0x28, 
            0x32, 
            0x3C, 
            0x46, 
            0x50, 
            0x5A, 
            0x64, 
            0x6E, 
            0x78, 
            0x82, 
            0x8C, 
            0xA0, 
            0xB9, 
            0xCD, 
            0xE1, 
            0xF5, 
            0xFA, 
            0xFF
        })
        Name (FCTU, 0x02)
        Name (FCTD, 0x05)
        Name (FHST, Buffer (0x16)
        {
            /* 0000 */  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // ........
            /* 0008 */  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // ........
            /* 0010 */  0x00, 0x00, 0x00, 0x00, 0x00, 0x00               // ......
        })
        Name (FIDX, Zero)
        Name (FNUM, Zero)
        Name (FSUM, Zero)
        Name (FLST, 0xFF)
        Name (FCNT, Zero)
        Method (FCPU, 0, NotSerialized)
        {
            If ((\ANKD.UCFC == Zero))
            {
                Return (Zero)
            }

            If (!\_SB.PCI0.LPCB.EC0.ECAV ())
            {
                Return (Zero)
            }

            Local5 = \_SB.PCI0.LPCB.EC0.ECPU /* External reference */
            If ((Local5 < 0x80))
            {
                Local0 = Local5
            }
            Else
            {
                Local0 = 0x3C
            }

            Local1 = (Local0 + FSUM) /* \SMCD.FSUM */
            Local2 = FIDX /* \SMCD.FIDX */
            Local1 -= DerefOf (FHST [Local2])
            FHST [Local2] = Local0
            FSUM = Local1
            Local2++
            If ((Local2 >= SizeOf (FHST)))
            {
                Local2 = Zero
            }

            FIDX = Local2
            Local2 = FNUM /* \SMCD.FNUM */
            If ((Local2 != SizeOf (FHST)))
            {
                Local2++
                FNUM = Local2
            }

            Local0 = (Local1 / Local2)
            If ((Local0 > 0xFF))
            {
                Local0 = 0xFF
            }

            Local2 = Match (FTA1, MGE, Local0, MTR, Zero, Zero)
            If ((Local2 > FLST))
            {
                Local1 = (Local2 - FLST) /* \SMCD.FLST */
                Local4 = FCTU /* \SMCD.FCTU */
            }
            Else
            {
                Local1 = (FLST - Local2)
                Local4 = FCTD /* \SMCD.FCTD */
            }

            If (!Local1)
            {
                FCNT = Zero
            }
            Else
            {
                Local3 = FCNT /* \SMCD.FCNT */
                FCNT++
                Local1 = (Local4 / Local1)
                If ((Local3 >= Local1))
                {
                    FLST = Local2
                    \_SB.PCI0.LPCB.EC0.ST98 (DerefOf (FTA2 [Local2]))
                    FCNT = Zero
                }
            }

            Return (One)
        }
    }
}
Method (FCPU, 0, NotSerialized)
:cool:
 
Joined
Feb 2, 2020
Messages
2
Motherboard
Dell Inspiron 5547
CPU
i7-4510U
Graphics
HD-4400
Mac
  1. MacBook Pro
Mobile Phone
  1. Android
  2. iOS
Hello, I am finding solution to control fan in my laptop Dell, this guilde can work with my device?
 
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