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/*
* This file is part of the coreboot project.
*
* Copyright 2018 Google LLC
*
* 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.
*/
/*
* Dynamic Platform Thermal Framework support
*/
/* Mutex for EC PAT interface */
Mutex (PATM, 1)
/* Read requested temperature sensor */
Method (TSRD, 1, Serialized)
{
If (Acquire (^PATM, 1000)) {
Return (0)
}
/* Set sensor ID */
W (DWTI, ToInteger (Arg0))
Local0 = R (DRTV)
Release (^PATM)
Return (\_SB.DPTF.CTOK (Local0))
}
/*
* Set Aux Trip Point 0
* Arg0 = Temp Sensor ID
* Arg1 = Value to set
*/
Method (PAT0, 2, Serialized)
{
If (Acquire (^PATM, 1000)) {
Return (0)
}
/* Set sensor ID */
W (DWTI, ToInteger (Arg0))
/* Set LOW trip point for this sensor */
W (DWTL, \_SB.DPTF.KTOC (Arg1))
Release (^PATM)
Return (1)
}
/*
* Set Aux Trip Point 1
* Arg0 = Temp Sensor ID
* Arg1 = Value to set
*/
Method (PAT1, 2, Serialized)
{
If (Acquire (^PATM, 1000)) {
Return (0)
}
/* Set sensor ID */
W (DWTI, ToInteger (Arg0))
/* Set HIGH trip point for this sensor */
W (DWTH, \_SB.DPTF.KTOC (Arg1))
Release (^PATM)
Return (1)
}
/*
* Disable Aux Trip Points
* Arg0 = Temp Sensor ID
*/
Method (PATD, 1, Serialized)
{
If (Acquire (^PATM, 1000)) {
Return (0)
}
/* Set sensor ID */
W (DWTI, ToInteger (Arg0))
/* Disable LOW and HIGH trip points */
W (DWTL, 0xff)
W (DWTH, 0xff)
Release (^PATM)
Return (1)
}
/*
* Handle sensor trip events
*/
Method (PATX, 0, Serialized)
{
Local0 = R (DRTQ)
Local1 = Local0
Printf ("Sensor trip mask: %o", Local0)
If (LNot (Acquire (^PATM, 1000))) {
/* Handle bits that are set */
While (FindSetRightBit (Local1, Local2))
{
/* DPTF will Notify sensor devices */
\_SB.DPTF.TEVT (Local2)
/* Clear current sensor number */
Local1 &= ~(1 << (Local2 - 1))
}
Release (^PATM)
}
/* Clear sensor events */
W (DWTQ, Local0)
}
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