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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
Device (EC0)
{
Name (_HID, EisaId ("PNP0C09"))
Name (_UID, 1)
Name (_GPE, EC_SCI_GPI)
Name (_STA, 0xf)
Name (DBUG, Zero)
Name (_CRS, ResourceTemplate() {
IO (Decode16,
CONFIG_EC_BASE_ACPI_DATA,
CONFIG_EC_BASE_ACPI_DATA,
4, 4)
IO (Decode16,
CONFIG_EC_BASE_ACPI_COMMAND,
CONFIG_EC_BASE_ACPI_COMMAND,
4, 4)
})
/* Handle registration of EmbeddedControl region */
Name (EREG, Zero)
OperationRegion (ERAM, EmbeddedControl, 0, 0xff)
Method (_REG, 2)
{
/* Indicate region is registered */
EREG = Arg1
/* Store initial value for power status */
ECPR = R (PWSR)
/* Indicate to EC that OS is ready for queries */
W (ERDY, Arg1)
/* Indicate that the OS supports S0ix */
W (CSOS, One)
/* Tell EC to stop emulating PS/2 mouse */
W (PS2M, Zero)
/* Enable DPTF support if enabled in devicetree */
If (\DPTE == One) {
W (DWST, Arg1)
}
/* Initialize UCSI */
^UCSI.INIT ()
// Initialize LID switch state
Store (R (P1LC), \LIDS)
}
/*
* Find bitmask for field
* Arg0 = EC field structure
* Arg1 = Value
*/
Method (EBIT, 2, NotSerialized)
{
Local0 = DeRefOf (Arg0[1]) /* Mask */
Local1 = Arg1 & Local0
FindSetRightBit (Local0, Local2)
If (Local2) {
Local1 >>= Local2 - 1
}
Return (Local1)
}
/*
* READ or WRITE from EC region
* Arg0 = EC field structure
* Arg1 = Value to write
*/
Method (ECRW, 2, Serialized, 2)
{
If (!EREG) {
Return (Zero)
}
Local0 = DeRefOf (Arg0[0]) /* Byte offset */
Local1 = DeRefOf (Arg0[1]) /* Mask */
Local2 = DeRefOf (Arg0[2]) /* Read/Write */
OperationRegion (ERAM, EmbeddedControl, Local0, 2)
Field (ERAM, ByteAcc, Lock, WriteAsZeros)
{
BYT1, 8,
BYT2, 8,
}
If (Local2 == RD) {
/* Read first byte */
Local3 = BYT1
/* Read second byte if needed */
FindSetLeftBit (Local1, Local4)
If (Local4 > 8) {
Local4 = BYT2
Local4 <<= 8
Local3 |= Local4
}
Local5 = EBIT (Arg0, Local3)
If (DBUG) {
Printf ("ECRD %o = %o", Local0, Local5)
}
Return (Local5)
} ElseIf (Local2 == WR) {
/* Write byte */
If (DBUG) {
Printf ("ECWR %o = %o", Local0, Arg1)
}
BYT1 = Arg1
}
Return (Zero)
}
/*
* Read a field from EC
* Arg0 = EC field structure
*/
Method (R, 1, Serialized, 2)
{
Return (ECRW (Arg0, Zero))
}
/*
* Write value to a field from EC
* Arg0 = EC field structure
* Arg1 = Value to write
*/
Method (W, 2, Serialized, 2)
{
Return (ECRW (Arg0, Arg1))
}
/*
* Tell EC that the OS is entering or exiting S0ix
*/
Method (S0IX, 1, Serialized)
{
If (Arg0) {
Printf ("EC Enter S0ix")
W (CSEX, One)
/*
* Read back from EC RAM after enabling S0ix
* to prevent EC from aborting S0ix entry.
*/
R (EVT1)
} Else {
Printf ("EC Exit S0ix")
W (CSEX, Zero)
}
}
#include "ec_dev.asl"
#include "ec_ram.asl"
#include "ac.asl"
#include "battery.asl"
#include "event.asl"
#include "lid.asl"
#include "platform.asl"
#include "vbtn.asl"
#include "ucsi.asl"
#ifdef EC_ENABLE_DPTF
#include "dptf.asl"
#endif
#ifdef EC_ENABLE_PRIVACY
#include "privacy.asl"
#endif
}
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