mirror of
https://github.com/AsahiLinux/u-boot
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66 lines
1.2 KiB
Text
66 lines
1.2 KiB
Text
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2014 Google Inc.
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* Copyright (C) 2016 Intel Corporation.
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*/
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Device (TCHG)
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{
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Name (_HID, "INT3403")
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Name (_UID, 0)
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Name (PTYP, 0x0B)
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Name (_STR, Unicode("Battery Charger"))
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Method (_STA)
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{
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If (LEqual (\DPTE, One)) {
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Return (0xF)
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} Else {
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Return (0x0)
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}
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}
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/* Return charger performance states defined by mainboard */
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Method (PPSS)
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{
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Return (\_SB.CHPS)
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}
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/* Return maximum charger current limit */
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Method (PPPC)
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{
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/* Convert size of PPSS table to index */
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Store (SizeOf (\_SB.CHPS), Local0)
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Decrement (Local0)
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/* Check if charging is disabled (AC removed) */
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If (LEqual (\_SB.PCI0.LPCB.EC0.ACEX, Zero)) {
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/* Return last power state */
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Return (Local0)
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} Else {
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/* Return highest power state */
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Return (0)
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}
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Return (0)
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}
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/* Set charger current limit */
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Method (SPPC, 1)
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{
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/* Retrieve Control (index 4) for specified PPSS level */
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Store (DeRefOf (Index (DeRefOf (Index
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(\_SB.CHPS, ToInteger (Arg0))), 4)), Local0)
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/* Pass Control value to EC to limit charging */
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\_SB.PCI0.LPCB.EC0.CHGS (Local0)
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}
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/* Initialize charger participant */
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Method (INIT)
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{
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/* Disable charge limit */
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\_SB.PCI0.LPCB.EC0.CHGD ()
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}
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}
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