diff options
Diffstat (limited to 'src/soc/intel/skylake/acpi/dptf/charger.asl')
-rw-r--r-- | src/soc/intel/skylake/acpi/dptf/charger.asl | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/acpi/dptf/charger.asl b/src/soc/intel/skylake/acpi/dptf/charger.asl new file mode 100644 index 000000000000..bcf5963e18f0 --- /dev/null +++ b/src/soc/intel/skylake/acpi/dptf/charger.asl @@ -0,0 +1,79 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc. + * Copyright (C) 2015 Intel Corporation. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +Device (TCHG) +{ + Name (_HID, "INT3403") + Name (_UID, 0) + Name (PTYP, 0x0B) + Name (_STR, Unicode("Battery Charger")) + + Method (_STA) + { + If (LEqual (\DPTE, One)) { + Return (0xF) + } Else { + Return (0x0) + } + } + + /* Return charger performance states defined by mainboard */ + Method (PPSS) + { + Return (\_SB.CHPS) + } + + /* Return maximum charger current limit */ + Method (PPPC) + { + /* Convert size of PPSS table to index */ + Store (SizeOf (\_SB.CHPS), Local0) + Decrement (Local0) + + /* Check if charging is disabled (AC removed) */ + If (LEqual (\_SB.PCI0.LPCB.EC0.ACEX, Zero)) { + /* Return last power state */ + Return (Local0) + } Else { + /* Return highest power state */ + Return (0) + } + + Return (0) + } + + /* Set charger current limit */ + Method (SPPC, 1) + { + /* Retrieve Control (index 4) for specified PPSS level */ + Store (DeRefOf (Index (DeRefOf (Index + (\_SB.CHPS, ToInteger (Arg0))), 4)), Local0) + + /* Pass Control value to EC to limit charging */ + \_SB.PCI0.LPCB.EC0.CHGS (Local0) + } + + /* Initialize charger participant */ + Method (INIT) + { + /* Disable charge limit */ + \_SB.PCI0.LPCB.EC0.CHGD () + } +} |