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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>
This commit is contained in:
Sumeet Pawnikar 2015-10-19 14:45:23 +05:30 committed by Patrick Georgi
parent a28e9084bf
commit 2ca76e688c
2 changed files with 90 additions and 0 deletions
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18
src/soc/intel/skylake/acpi/dptf/dptf.asl
View File

@ -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)

72
src/soc/intel/skylake/acpi/dptf/fan.asl Normal file
View File

@ -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)
}
}
}