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/* SPDX-License-Identifier: GPL-2.0-only */
Device (TCHG)
{
Name (_HID, DPTF_GEN_DEVICE)
Name (_UID, 0)
Name (PTYP, 0x0B)
Name (_STR, Unicode("Battery Charger"))
Method (_STA)
{
If (\DPTE == 1) {
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 */
Local0 = SizeOf (\_SB.CHPS)
Local0--
/* Check if charging is disabled (AC removed) */
If (\_SB.PCI0.LPCB.EC0.ACEX == 0) {
/* 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 */
Local0 = DeRefOf (DeRefOf (\_SB.CHPS[ToInteger (Arg0)])[4])
/* 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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