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authorSumeet Pawnikar <sumeet.r.pawnikar@intel.com>2015-10-19 14:45:23 +0530
committerPatrick Georgi <pgeorgi@google.com>2015-11-05 17:40:17 +0100
commit2ca76e688cd74f021c4d0a2e74a83b7baa41f6bd (patch)
tree76317645c260af6f34521950acfdb7671cf4f63b
parenta28e9084bf58dc4094a3383b2887a50b9756f2e1 (diff)
downloadcoreboot-2ca76e688cd74f021c4d0a2e74a83b7baa41f6bd.tar.xz
intel/skylake: Add Fan control support
This patch adds the ASL file for Fan as cooling device /participant for thermal active cooling action for DPTF on SKL-U fan based kunimitsu board. With active cooling policy (_ART), we can control the fan on/off and speed. BRANCH=None BUG=chrome-os-partner:46493 TEST=Built for kunimitsu board. Tested to see that the thermal devices and the participants are enumerated and can be seen in the /sys/bus/platform/devices. Also, checked the FAN type the cooling devices enumerated in the /sys/class/thermal with sysfs interface. Change-Id: Iacfd9152e300ec47895c29deab2c9d4361230849 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: d37a089b5196f02cb95f16083c416456e96d54a4 Original-Change-Id: I8293bfe2a2bf213b69fbb4223bbfcf508a9cf0bf Original-Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com> Original-Reviewed-on: https://chromium-review.googlesource.com/307027 Original-Commit-Ready: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Original-Tested-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Original-Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/12322 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
-rw-r--r--src/soc/intel/skylake/acpi/dptf/dptf.asl18
-rw-r--r--src/soc/intel/skylake/acpi/dptf/fan.asl72
2 files changed, 90 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/acpi/dptf/dptf.asl b/src/soc/intel/skylake/acpi/dptf/dptf.asl
index 4f1c5645d0..61f982c4b9 100644
--- a/src/soc/intel/skylake/acpi/dptf/dptf.asl
+++ b/src/soc/intel/skylake/acpi/dptf/dptf.asl
@@ -29,6 +29,11 @@ Device (DPTF)
/* DPPM Cooling Policy */
ToUUID ("16CAF1B7-DD38-40ED-B1C1-1B8A1913D531"),
+
+#ifdef DPTF_ENABLE_FAN_CONTROL
+ /* DPPM Active Policy */
+ ToUUID ("3A95C389-E4B8-4629-A526-C52C88626BAE"),
+#endif
})
Method (_STA)
@@ -71,6 +76,14 @@ Device (DPTF)
Return (\_SB.DTRT)
}
+#ifdef DPTF_ENABLE_FAN_CONTROL
+ /* _ART : Active Cooling Relationship Table */
+ Method (_ART)
+ {
+ Return (\_SB.DART)
+ }
+#endif
+
/* Convert from Degrees C to 1/10 Kelvin for ACPI */
Method (CTOK, 1) {
/* 10th of Degrees C */
@@ -90,6 +103,11 @@ Device (DPTF)
#include "charger.asl"
#endif
+#ifdef DPTF_ENABLE_FAN_CONTROL
+ /* Include Fan Participant */
+ #include "fan.asl"
+#endif
+
}
Scope (\_SB.PCI0)
diff --git a/src/soc/intel/skylake/acpi/dptf/fan.asl b/src/soc/intel/skylake/acpi/dptf/fan.asl
new file mode 100644
index 0000000000..0501385998
--- /dev/null
+++ b/src/soc/intel/skylake/acpi/dptf/fan.asl
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Intel Corporation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+Device (TFN1)
+{
+ Name (_HID, "INT3404")
+ Name (_UID, 0)
+ Name (_STR, Unicode("Fan Control"))
+
+ /* _FIF: Fan Information */
+ Name (_FIF, Package ()
+ {
+ 0, // Revision
+ 1, // Fine Grained Control
+ 2, // Step Size
+ 0 // No Low Speed Notification
+ })
+
+ /* Return Fan Performance States defined by mainboard */
+ Method (_FPS)
+ {
+ Return (\_SB.DFPS)
+ }
+
+ Name (TFST, Package ()
+ {
+ 0, // Revision
+ 0x00, // Control
+ 0x00 // Speed
+ })
+
+ /* _FST: Fan current Status */
+ Method (_FST, 0, Serialized,,PkgObj)
+ {
+ /* Fill in TFST with current control. */
+ Store (\_SB.PCI0.LPCB.EC0.FAND, Index (TFST, 1))
+ Return (TFST)
+ }
+
+ /* _FSL: Fan Speed Level */
+ Method (_FSL, 1, Serialized)
+ {
+ Store (Arg0, \_SB.PCI0.LPCB.EC0.FAND)
+ Notify (DPTF, 0x83) // Re evaluate _ART
+ }
+
+ Method (_STA)
+ {
+ If (LEqual (\DPTE, One))
+ {
+ Return (0xF)
+ } Else {
+ Return (0x0)
+ }
+ }
+}