diff options
Diffstat (limited to 'src/ec/google/wilco/acpi/vbtn.asl')
-rw-r--r-- | src/ec/google/wilco/acpi/vbtn.asl | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/ec/google/wilco/acpi/vbtn.asl b/src/ec/google/wilco/acpi/vbtn.asl new file mode 100644 index 0000000000..201ab51002 --- /dev/null +++ b/src/ec/google/wilco/acpi/vbtn.asl @@ -0,0 +1,94 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 Google LLC + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; version 2 of + * the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * Intel Virtual Button driver compatible with the driver found in + * the Linux kernel at drivers/platform/x86/intel-vbtn.c + * + * For tablet/laptop and dock/undock events to work the board must + * select SYSTEM_TYPE_CONVERTIBLE for the SMBIOS enclosure type to + * indicate the device is a convertible. + */ + +Name (FLAP, 0x40) /* Flag indicating device is in laptop mode */ + +/* Virtual events */ +Name (VPPB, 0xc0) /* Power Button press */ +Name (VRPB, 0xc1) /* Power Button release */ +Name (VPSP, 0xc2) /* Special key press (LEFTMETA in Linux) */ +Name (VRSP, 0xc3) /* Special key release (LEFTMETA in Linux) */ +Name (VPVU, 0xc4) /* Volume Up press */ +Name (VRVU, 0xc5) /* Volume Up release */ +Name (VPVD, 0xc6) /* Volume Down press */ +Name (VRVD, 0xc7) /* Volume Down release */ +Name (VPRL, 0xc8) /* Rotate Lock press */ +Name (VRRL, 0xc9) /* Rotate Lock release */ +Name (VDOC, 0xca) /* Docked */ +Name (VUND, 0xcb) /* Undocked */ +Name (VTBL, 0xcc) /* Tablet Mode */ +Name (VLAP, 0xcd) /* Laptop Mode */ + +Device (VBTN) +{ + Name (_HID, "INT33D6") + Name (_UID, One) + Name (_DDN, "Intel Virtual Button Driver") + + /* + * This method is called at driver probe time and must exist or + * the driver will not load. + */ + Method (VBDL) + { + } + + /* + * This method returns flags indicating tablet and dock modes. + * It is called at driver probe time so the OS knows what the + * state of the device is at boot. + */ + Method (VGBS) + { + Local0 = Zero + + /* Check EC orientation for tablet mode flag */ + If (R (OTBL)) { + Printf ("EC reports tablet mode at boot") + } Else { + Printf ("EC reports laptop mode at boot") + Local0 |= ^^FLAP + } + Return (Local0) + } + + Method(_STA, 0) + { + Return (0xF) + } +} + +Device (VBTO) +{ + Name (_HID, "INT33D3") + Name (_CID, "PNP0C60") + Name (_UID, One) + Name (_DDN, "Laptop/tablet mode indicator driver") + + Method (_STA, 0) + { + Return (0xF) + } +} |