src/mainboard/system76/kbl-u/acpi/s76.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 // Notifications:
   4 //   0x80 - hardware backlight toggle
   5 //   0x81 - backlight toggle
   6 //   0x82 - backlight down
   7 //   0x83 - backlight up
   8 //   0x84 - backlight color change
   9 Device (S76D) {
  10         Name (_HID, "17761776")
  11         Name (_UID, 0)
  12
  13         Method (RSET, 0, Serialized) {
  14                 Printf ("S76D: RSET")
  15                 SAPL(0)
  16                 SKBL(0)
  17         }
  18
  19         Method (INIT, 0, Serialized) {
  20                 Printf ("S76D: INIT")
  21                 RSET()
  22                 If (^^PCI0.LPCB.EC0.ECOK) {
  23                         // Set flags to use software control
  24                         ^^PCI0.LPCB.EC0.ECOS = 2
  25                         Return (0)
  26                 } Else {
  27                         Return (1)
  28                 }
  29         }
  30
  31         Method (FINI, 0, Serialized) {
  32                 Printf ("S76D: FINI")
  33                 RSET()
  34                 If (^^PCI0.LPCB.EC0.ECOK) {
  35                         // Set flags to use hardware control
  36                         ^^PCI0.LPCB.EC0.ECOS = 1
  37                         Return (0)
  38                 } Else {
  39                         Return (1)
  40                 }
  41         }
  42
  43         // Get Airplane LED
  44         Method (GAPL, 0, Serialized) {
  45                 If (^^PCI0.LPCB.EC0.ECOK) {
  46                         If (^^PCI0.LPCB.EC0.AIRP & 0x40) {
  47                                 Return (1)
  48                         }
  49                 }
  50                 Return (0)
  51         }
  52
  53         // Set Airplane LED
  54         Method (SAPL, 1, Serialized) {
  55                 If (^^PCI0.LPCB.EC0.ECOK) {
  56                         If (Arg0) {
  57                                 ^^PCI0.LPCB.EC0.AIRP |= 0x40
  58                         } Else {
  59                                 ^^PCI0.LPCB.EC0.AIRP &= 0xBF
  60                         }
  61                 }
  62         }
  63
  64         // Get KB LED
  65         Method (GKBL, 0, Serialized) {
  66                 Local0 = 0
  67                 If (^^PCI0.LPCB.EC0.ECOK) {
  68                         ^^PCI0.LPCB.EC0.FDAT = 1
  69                         ^^PCI0.LPCB.EC0.FCMD = 0xCA
  70                         Local0 = ^^PCI0.LPCB.EC0.FBUF
  71                         ^^PCI0.LPCB.EC0.FCMD = 0
  72                 }
  73                 Return (Local0)
  74         }
  75
  76         // Set KB Led
  77         Method (SKBL, 1, Serialized) {
  78                 If (^^PCI0.LPCB.EC0.ECOK) {
  79                         ^^PCI0.LPCB.EC0.FDAT = 0
  80                         ^^PCI0.LPCB.EC0.FBUF = Arg0
  81                         ^^PCI0.LPCB.EC0.FCMD = 0xCA
  82                 }
  83         }
  84 }