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/*
* 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.
*/
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 ()
}
}
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