src/mainboard/siemens/sitemp_g1p1/acpi/thermal.asl

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2010 Siemens AG, Inc.
   5  * (Written by Josef Kellermann <joseph.kellermann@heitec.de> for Siemens AG, Inc.)
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  *
  20  */
  21
  22 /* THERMAL */
  23 Scope(\_TZ) {
  24         Name (KELV, 2732)
  25         Name (THOT, 800)
  26         Name (TCRT, 850)
  27
  28         ThermalZone(TZ00) {
  29                 Method(_AC0,0) {        /* Active Cooling 0 (0=highest fan speed) */
  30                         /* DBGO("\\_TZ\\TZ00\\_AC0\n") */
  31                         Return(Add(0, 2730))
  32                 }
  33                 Method(_AL0,0) {        /* Returns package of cooling device to turn on */
  34                         /* DBGO("\\_TZ\\TZ00\\_AL0\n") */
  35                         Return(Package() {\_TZ.TZ00.FAN0})
  36                 }
  37                 Device (FAN0) {
  38                         Name(_HID, EISAID("PNP0C0B"))
  39                         Name(_PR0, Package() {PFN0})
  40                 }
  41
  42                 PowerResource(PFN0,0,0) {
  43                         Method(_STA) {
  44                                 Store(0xF,Local0)
  45                                 Return(Local0)
  46                         }
  47                         Method(_ON) {
  48                                 /* DBGO("\\_TZ\\TZ00\\FAN0 _ON\n") */
  49                         }
  50                         Method(_OFF) {
  51                                 /* DBGO("\\_TZ\\TZ00\\FAN0 _OFF\n") */
  52                         }
  53                 }
  54
  55                 // Processors used for active cooling
  56                 Method (_PSL, 0, Serialized)
  57                 {
  58                         If (MPEN) {
  59                                 Return (Package() {\_PR.CPU0, \_PR.CPU1})
  60                         }
  61                         Return (Package() {\_PR.CPU0})
  62                 }
  63
  64                 Method(_HOT,0) {        /* return hot temp in tenths degree Kelvin */
  65                         /* DBGO("\\_TZ\\TZ00\\_HOT\n") */
  66                         Return (Add (THOT, KELV))
  67                 }
  68                 Method(_CRT,0) {        /* return critical temp in tenths degree Kelvin */
  69                         /* DBGO("\\_TZ\\TZ00\\_CRT\n") */
  70                         Return (Add (TCRT, KELV))
  71                 }
  72                 Method(_TMP,0) {        /* return current temp of this zone */
  73                         Store (SMBR (0x07, 0x4C,, 0x00), Local0)
  74                         If (LGreater (Local0, 0x10)) {
  75                                 Store (Local0, Local1)
  76                         }
  77                         Else {
  78                                 Add (Local0, THOT, Local0)
  79                                 Return (Add (400, KELV))
  80                         }
  81
  82                         Store (SMBR (0x07, 0x4C, 0x01), Local0)
  83                         /* only the two MSBs in the external temperature low byte are used, resolution 0.25. We ignore it */
  84                         /* Store (SMBR (0x07, 0x4C, 0x10), Local2) */
  85                         If (LGreater (Local0, 0x10)) {
  86                                 If (LGreater (Local0, Local1)) {
  87                                         Store (Local0, Local1)
  88                                 }
  89
  90                                 Multiply (Local1, 10, Local1)
  91                                 Return (Add (Local1, KELV))
  92                         }
  93                         Else {
  94                                 Add (Local0, THOT, Local0)
  95                                 Return (Add (400 , KELV))
  96                         }
  97                 } /* end of _TMP */
  98         } /* end of TZ00 */
  99 }