src/mainboard/google/cyan/acpi/touchscreen_elan.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 Scope (\_SB.PCI0.I2C1)
   4 {
   5         Device (ETSA)
   6         {
   7                 Name (_HID, "ELAN0001")
   8                 Name (_DDN, "Elan Touchscreen ")
   9                 Name (_UID, 5)
  10                 Name (ISTP, 0) /* TouchScreen */
  11
  12                 Method(_CRS, 0x0, NotSerialized)
  13                 {
  14                         Name(BUF0,ResourceTemplate ()
  15                         {
  16                                 I2CSerialBus(
  17                                         0x10,                     /* SlaveAddress */
  18                                         ControllerInitiated,      /* SlaveMode */
  19                                         400000,                   /* ConnectionSpeed */
  20                                         AddressingMode7Bit,       /* AddressingMode */
  21                                         "\\_SB.PCI0.I2C1",        /* ResourceSource */
  22                                 )
  23                                 GpioInt (Level, ActiveLow, SharedAndWake, PullDefault,,
  24                                         "\\_SB.GPNC") { BOARD_TOUCH_GPIO_INDEX }
  25
  26                         } )
  27                         Return (BUF0)
  28                 }
  29
  30                 Method (_STA)
  31                 {
  32                         If (\S1EN == 1) {
  33                                 Return (0xF)
  34                         } Else {
  35                                 Return (0x0)
  36                         }
  37                 }
  38 #if CONFIG(CHROMEOS)
  39                 Name (_PRW, Package() { BOARD_TOUCHSCREEN_WAKE_GPIO, 0x3 })
  40 #endif
  41                 /* Allow device to power off in S0 */
  42                 Name (_S0W, 4)
  43         }
  44 }