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authorDuncan Laurie <dlaurie@google.com>2018-11-20 17:30:47 -0800
committerDuncan Laurie <dlaurie@chromium.org>2018-12-04 17:34:38 +0000
commit98d7de7ea93379957fc3f48bef6912e9947e1099 (patch)
tree5f638ec5330ebe11b4ebf59a9cad0377e690c856 /src/ec
parent106a0823c92593fe35150c5255d9852b9bff9c5d (diff)
downloadcoreboot-98d7de7ea93379957fc3f48bef6912e9947e1099.tar.xz
ec/google/wilco/acpi: Add DPTF support
Add the support needed for DPTF. This includes the methods to write trip point values, read temperatures, and handle events. This was tested on a sarien board by inspecting AML debug output with the kernel while monitoring temperatures and trip points in sysfs and controlling temperatures with a fan to ensure that when a trip point is crossed an SCI is generated and the event is handled properly. Change-Id: I8d8570d176c0896fa709a6c782b319f58d3c1e52 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/29761 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/ec')
-rw-r--r--src/ec/google/wilco/acpi/dptf.asl134
-rw-r--r--src/ec/google/wilco/acpi/ec.asl6
-rw-r--r--src/ec/google/wilco/acpi/ec_ram.asl14
-rw-r--r--src/ec/google/wilco/acpi/event.asl5
4 files changed, 159 insertions, 0 deletions
diff --git a/src/ec/google/wilco/acpi/dptf.asl b/src/ec/google/wilco/acpi/dptf.asl
new file mode 100644
index 0000000000..f5545d0c79
--- /dev/null
+++ b/src/ec/google/wilco/acpi/dptf.asl
@@ -0,0 +1,134 @@
+/*
+ * 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
+ */
+
+External (\_SB.DPTF.CTOK, MethodObj)
+External (\_SB.DPTF.KTOC, MethodObj)
+External (\_SB.DPTF.TEVT, MethodObj)
+
+/* 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)
+}
diff --git a/src/ec/google/wilco/acpi/ec.asl b/src/ec/google/wilco/acpi/ec.asl
index 67a698f6b6..ff8fccc596 100644
--- a/src/ec/google/wilco/acpi/ec.asl
+++ b/src/ec/google/wilco/acpi/ec.asl
@@ -49,6 +49,11 @@ Device (EC0)
/* Tell EC to stop emulating PS/2 mouse */
W (PS2M, Zero)
+
+ /* Enable DPTF support if enabled in devicetree */
+ If (\DPTE == One) {
+ W (DWST, Arg1)
+ }
}
/*
@@ -142,4 +147,5 @@ Device (EC0)
#include "event.asl"
#include "lid.asl"
#include "platform.asl"
+ #include "dptf.asl"
}
diff --git a/src/ec/google/wilco/acpi/ec_ram.asl b/src/ec/google/wilco/acpi/ec_ram.asl
index 6ea2366b0a..1563a3c8af 100644
--- a/src/ec/google/wilco/acpi/ec_ram.asl
+++ b/src/ec/google/wilco/acpi/ec_ram.asl
@@ -106,6 +106,14 @@ Name (BSBS, Package () { 0x2a, 0xff, RD }) /* BSTATIC: Battery String */
Name (QSEC, Package () { 0x2b, 0xff, RD }) /* QS Event Count */
Name (QSEB, Package () { 0x2c, 0xff, RD }) /* QS Event Byte */
+Name (DRST, Package () { 0x32, 0xff, RD }) /* DPTF: Read State */
+Name (DRTI, Package () { 0x33, 0xff, RD }) /* DPTF: Read Thermal Index */
+Name (DRTV, Package () { 0x34, 0xff, RD }) /* DPTF: Read Thermal Value */
+Name (DRTL, Package () { 0x35, 0xff, RD }) /* DPTF: Read Trip Low */
+Name (DRTH, Package () { 0x36, 0xff, RD }) /* DPTF: Read Trip High */
+Name (DRHY, Package () { 0x37, 0xff, RD }) /* DPTF: Read Hysteresis */
+Name (DRTQ, Package () { 0x38, 0xff, RD }) /* DPTF: Read Trip Query */
+
Name (ORST, Package () { 0x39, 0xff, RD }) /* Orientation State */
Name (OREV, Package () { 0x3a, 0xff, RD }) /* Orientation Events */
Name (OECH, Package () { 0x3a, 0x01, RD }) /* Event: Orientation */
@@ -128,3 +136,9 @@ Name (SSEL, Package () { 0x04, 0xff, WR }) /* Battery String Select */
Name (ERDY, Package () { 0x05, 0xff, WR }) /* EC Ready */
Name (FWAK, Package () { 0x06, 0xff, WR }) /* EC _WAK */
Name (PS2M, Package () { 0x20, 0xff, WR }) /* EC PS/2 Mouse Emulation */
+Name (DWST, Package () { 0x32, 0xff, WR }) /* DPTF: Write State */
+Name (DWTI, Package () { 0x33, 0xff, WR }) /* DPTF: Write Thermal Index */
+Name (DWTL, Package () { 0x35, 0xff, WR }) /* DPTF: Write Trip Low */
+Name (DWTH, Package () { 0x36, 0xff, WR }) /* DPTF: Write Trip High */
+Name (DWHY, Package () { 0x37, 0xff, WR }) /* DPTF: Write Hysteresis */
+Name (DWTQ, Package () { 0x38, 0xff, WR }) /* DPTF: Write Trip Query */
diff --git a/src/ec/google/wilco/acpi/event.asl b/src/ec/google/wilco/acpi/event.asl
index 4d796b5c85..21721f2750 100644
--- a/src/ec/google/wilco/acpi/event.asl
+++ b/src/ec/google/wilco/acpi/event.asl
@@ -87,6 +87,11 @@ Method (ECQ2, 1, Serialized)
Method (ECQ3, 1, Serialized)
{
Printf ("EVT3: %o", Arg0)
+
+ /* Theraml Events */
+ If (EBIT (E3TH, Arg0)) {
+ ^PATX ()
+ }
}
/* Handle events in PmEv4 */