src/superio/winbond/w83667hg-a/ps2_controller.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3         /* SuperIO control port */
   4         Name (SPIO, 0x2E)
   5
   6         /* SuperIO control map */
   7         OperationRegion (SPIM, SystemIO, SPIO, 0x02)
   8                 Field (SPIM, ByteAcc, NoLock, Preserve) {
   9                 SIOI, 8,
  10                 SIOD, 8
  11         }
  12
  13         /* SuperIO control registers */
  14         IndexField (SIOI, SIOD, ByteAcc, NoLock, Preserve) {
  15                 Offset (0x2A),
  16                 CR2A, 8,                /* Pin function selection */
  17         }
  18
  19         Device (PS2K)           // Keyboard
  20         {
  21                 Name(_HID, EISAID("PNP0303"))
  22                 Name(_CID, EISAID("PNP030B"))
  23
  24                 Name(_CRS, ResourceTemplate()
  25                 {
  26                         IO (Decode16, 0x60, 0x60, 0x01, 0x01)
  27                         IO (Decode16, 0x64, 0x64, 0x01, 0x01)
  28                         IRQ (Edge, ActiveHigh, Exclusive) { 0x01 } // IRQ 1
  29                 })
  30
  31                 Method (_STA, 0)
  32                 {
  33                         Return (0xf)
  34                 }
  35         }
  36
  37         Device (PS2M)           // Mouse
  38         {
  39                 Name(_HID, EISAID("PNP0F13"))
  40                 Name(_CRS, ResourceTemplate()
  41                 {
  42                         IRQ (Edge, ActiveHigh, Exclusive) { 0x0c } // IRQ 12
  43                 })
  44
  45                 Method(_STA, 0)
  46                 {
  47                         /* Access SuperIO ACPI device */
  48                         Store(0x87, SIOI)
  49                         Store(0x87, SIOI)
  50
  51                         /* Read Pin56 function select */
  52                         And(CR2A, 0x2, Local0)
  53
  54                         /* Restore default SuperIO access */
  55                         Store(0xAA, SIOI)
  56
  57                         if (Local0 == 0) {
  58                                 /* Mouse function selected */
  59                                 Return (0xf)
  60                         }
  61                         Return (0x0)
  62                 }
  63         }