src/mainboard/google/rambi/acpi/trackpad_elan.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <variant/onboard.h>
   4
   5 Scope (\_SB.PCI0.I2C1)
   6 {
   7         Device (ETPA)
   8         {
   9                 Name (_HID, "ELAN0000")
  10                 Name (_DDN, "Elan Touchpad")
  11                 Name (_UID, 3)
  12                 Name (ISTP, 1) /* Touchpad */
  13
  14                 Name (_CRS, ResourceTemplate()
  15                 {
  16                         I2cSerialBus (
  17                                 BOARD_TRACKPAD_I2C_ADDR,        // SlaveAddress
  18                                 ControllerInitiated,            // SlaveMode
  19                                 400000,                         // ConnectionSpeed
  20                                 AddressingMode7Bit,             // AddressingMode
  21                                 "\\_SB.PCI0.I2C1",              // ResourceSource
  22                         )
  23                         Interrupt (ResourceConsumer, Level, ActiveLow)
  24                         {
  25                                 BOARD_TRACKPAD_IRQ
  26                         }
  27                 })
  28
  29                 Method (_STA)
  30                 {
  31                         If (\S1EN == 1) {
  32                                 Return (0xF)
  33                         } Else {
  34                                 Return (0x0)
  35                         }
  36                 }
  37
  38                 /* Allow device to power off in S0 */
  39                 Name (_S0W, 4)
  40         }
  41 }