e52840a9ed
Add methods to handle ACPI EC events at runtime. Currently only some common events are handled like lid switch and battery info, and the event status is printed for debug on other events. Change-Id: Ic0bd070940c8a2dfa6a251f3464301418bdb69c1 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/29124 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
141 lines
2.8 KiB
Plaintext
141 lines
2.8 KiB
Plaintext
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2018 Google LLC
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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Device (EC0)
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{
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Name (_HID, EisaId ("PNP0C09"))
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Name (_UID, 1)
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Name (_GPE, EC_SCI_GPI)
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Name (_STA, 0xf)
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Name (_CRS, ResourceTemplate() {
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IO (Decode16,
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CONFIG_EC_BASE_ACPI_DATA,
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CONFIG_EC_BASE_ACPI_DATA,
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4, 4)
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IO (Decode16,
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CONFIG_EC_BASE_ACPI_COMMAND,
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CONFIG_EC_BASE_ACPI_COMMAND,
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4, 4)
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})
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/* Handle registration of EmbeddedControl region */
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Name (EREG, Zero)
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OperationRegion (ERAM, EmbeddedControl, 0, 0xff)
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Method (_REG, 2)
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{
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/* Indicate region is registered */
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EREG = Arg1
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/* Store initial value for power status */
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ECPR = R (APWR)
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/* Indicate to EC that OS is ready for queries */
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W (ERDY, One)
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/* Tell EC to stop emulating PS/2 mouse */
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W (PS2M, Zero)
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}
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/*
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* Find bitmask for field
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* Arg0 = EC field structure
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* Arg1 = Value
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*/
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Method (EBIT, 2, NotSerialized)
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{
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Local0 = DeRefOf (Arg0[1]) /* Mask */
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Local1 = Arg1 & Local0
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FindSetRightBit (Local0, Local2)
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If (Local2) {
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Local1 >>= Local2 - 1
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}
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Return (Local1)
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}
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/*
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* READ or WRITE from EC region
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* Arg0 = EC field structure
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* Arg1 = Value to write
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*/
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Method (ECRW, 2, Serialized)
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{
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If (!EREG) {
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Return (Zero)
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}
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Local0 = DeRefOf (Arg0[0]) /* Byte offset */
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Local1 = DeRefOf (Arg0[1]) /* Mask */
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Local2 = DeRefOf (Arg0[2]) /* Read/Write */
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OperationRegion (ERAM, EmbeddedControl, Local0, 2)
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Field (ERAM, ByteAcc, Lock, WriteAsZeros)
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{
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BYT1, 8,
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BYT2, 8,
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}
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If (Local2 == RD) {
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/* Read first byte */
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Local3 = BYT1
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/* Read second byte if needed */
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FindSetLeftBit (Local1, Local4)
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If (Local4 > 8) {
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Local4 = BYT2
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Local4 <<= 8
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Local3 |= Local4
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}
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Local5 = EBIT (Arg0, Local3)
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Printf ("ECRD %o = %o", Local0, Local5)
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Return (Local5)
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} ElseIf (Local2 == WR) {
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/* Write byte */
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Printf ("ECWR %o = %o", Local0, Arg1)
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BYT1 = Arg1
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}
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Return (Zero)
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}
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/*
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* Read a field from EC
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* Arg0 = EC field structure
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*/
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Method (R, 1, Serialized)
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{
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Return (ECRW (Arg0, Zero))
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}
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/*
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* Write value to a field from EC
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* Arg0 = EC field structure
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* Arg1 = Value to write
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*/
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Method (W, 2, Serialized)
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{
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Return (ECRW (Arg0, Arg1))
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}
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#include "ec_dev.asl"
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#include "ec_ram.asl"
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#include "ac.asl"
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#include "battery.asl"
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#include "event.asl"
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#include "lid.asl"
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#include "platform.asl"
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}
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