src/mainboard/intel/glkrvp/touchpad.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2         Scope (\_SB.PCI0.I2C4)
   3         {
   4                 Device (TPAD)
   5                 {
   6                 Name(_ADR, 1)
   7                 Name (_HID, "ALPS0001")
   8                 Name (_CID, "PNP0C50")
   9                 Name (_DDN, "ALPS Touchpad")
  10                 Name (_UID, 1)
  11                 Name (ISTP, 1) /* Touchpad */
  12                 Name (_CRS, ResourceTemplate()
  13                 {
  14                         I2cSerialBus (
  15                                 0x2C,                     // SlaveAddress
  16                                 ControllerInitiated,      // SlaveMode
  17                                 400000,                   // ConnectionSpeed
  18                                 AddressingMode7Bit,       // AddressingMode
  19                                 "\\_SB.PCI0.I2C4",        // ResourceSource
  20                         )
  21                         Interrupt (ResourceConsumer, Level, ActiveLow)
  22                         {
  23                                 GPIO_18_IRQ
  24                         }
  25                         GpioInt (Level, ActiveLow, ExclusiveAndWake, PullUp, 0x0000, "\\_SB.GPO1", 0x00, ResourceConsumer, ,)
  26                         {
  27                                 18
  28                         }
  29                 })
  30
  31                 Method (_STA)
  32                 {
  33                                 Return (0xF)
  34                 }
  35                 Method(_DSM, 0x4, NotSerialized)
  36                 {
  37                 // DSM UUID for HIDI2C - HID driver does not load without DSM
  38                         If(Arg0 == ToUUID("3CDFF6F7-4267-4555-AD05-B30A3D8938DE"))
  39                         {
  40                                 // Function 0 : Query Function
  41                                 If(Arg2 == 0)
  42                                 {
  43                                         // Revision 1
  44                                         If(Arg1 == 1)
  45                                         {
  46                                                 Return (Buffer (1) {0x03})
  47                                         }
  48                                         Else
  49                                         {
  50                                                 Return (Buffer (1) {0x00})
  51                                         }
  52                                 } ElseIf (Arg2 == 1) {  // Function 1 : HID Function
  53                         // HID Descriptor Address (IHV Specific)
  54                                         Return(0x0020)
  55                                 } Else {
  56                                         Return (Buffer (1) {0x00})
  57                                 }
  58                         } Else {
  59                                 Return (Buffer (1) {0x00})
  60                         }
  61                 }
  62         }
  63 }