wmpower-0.4.3/src/power_management/toshiba/hci.c

   1 /* hci.c -- Hardware Configuration Interface
   2  *
   3  * Copyright (c) 1998-2000  Jonathan A. Buzzard (jonathan@buzzard.org.uk)
   4  *
   5  * $Log: hci.c,v $
   6  * Revision 1.2  2003/11/06 12:48:08  noberasco
   7  * Added a new machine id...
   8  *
   9  * Revision 1.1  2003/09/18 16:38:27  noberasco
  10  * overhaul III
  11  *
  12  * Revision 1.1.1.1  2003/06/05 09:34:03  noberasco
  13  * Initial import.
  14  *
  15  * Revision 1.5  2002/01/27 13:22:57  jab
  16  * updated list of machine ID's
  17  *
  18  * Revision 1.4  2001/10/05 13:04:43  jab
  19  * checked in change to using kernel module
  20  *
  21  * Revision 1.3  1999/12/12 11:33:39  jab
  22  * changed assembler to save registers, should make the programs stabler
  23  * slightly fudged addition to GetMachineID to get SCTTable ID's
  24  *
  25  * Revision 1.2  1999/08/15 10:43:28  jab
  26  * removed the HciGet and HciSet and replaced with HciFunction
  27  *
  28  * Revision 1.1  1999/03/11 20:27:06  jab
  29  * Initial revision
  30  *
  31  *
  32  * This program is free software; you can redistribute it and/or modify
  33  * it under the terms of the GNU General Public License as published by
  34  * the Free Software Foundation; either version 2 of the License, or
  35  * (at your option) any later version.
  36  *
  37  * This program is distributed in the hope that it will be useful,
  38  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  39  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  40  * GNU General Public License for more details.
  41  *
  42  * You should have received a copy of the GNU General Public License
  43  * along with this program; if not, write to the Free Software
  44  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  45  *
  46  */
  47
  48 static const char rcsid[]="$Id: hci.c,v 1.2 2003/11/06 12:48:08 noberasco Exp $";
  49
  50 #include<stdio.h>
  51 #include<stdlib.h>
  52 #include<unistd.h>
  53 #include<fcntl.h>
  54 #include<sys/stat.h>
  55 #include<sys/ioctl.h>
  56
  57 #include"hci.h"
  58
  59
  60 int HciFunction(SMMRegisters *regs)
  61 {
  62         int fd;
  63
  64         if ((fd=open(TOSH_DEVICE, O_RDWR))<0)
  65                 return HCI_FAILURE;
  66
  67         if (access(TOSH_PROC, R_OK)) {
  68                 close(fd);
  69                 return HCI_FAILURE;
  70         }
  71
  72         if (ioctl(fd, TOSH_SMM, regs)<0) {
  73                 close(fd);
  74                 return HCI_FAILURE;
  75         }
  76
  77         close(fd);
  78
  79         return (int) (regs->eax & 0xff00)>>8;
  80 }
  81
  82
  83 /*
  84  * Return the BIOS version of the laptop
  85  */
  86 int HciGetBiosVersion(void)
  87 {
  88         FILE *str;
  89         int major,minor;
  90         char buffer[64];
  91
  92         if (access(TOSH_PROC, R_OK))
  93                 return -1;
  94
  95         /* open /proc/toshiba for reading */
  96
  97         if (!(str = fopen(TOSH_PROC, "r")))
  98                 return -1;
  99
 100         /* scan in the information */
 101
 102         fgets(buffer, sizeof(buffer)-1, str);
 103         fclose(str);
 104         buffer[sizeof(buffer)-1] = '\0';
 105         sscanf(buffer, "%*s %*x %*d.%*d %d.%d %*x %*x\n", &major, &minor);
 106
 107         /* return the information */
 108
 109         return (major*0x100)+minor;
 110 }
 111
 112
 113 /*
 114  * Get the Toshiba machine identification number
 115  */
 116 int HciGetMachineID(int *id)
 117 {
 118         FILE *str;
 119         char buffer[64];
 120
 121         if (access(TOSH_PROC, R_OK))
 122                 return HCI_FAILURE;
 123
 124         /* open /proc/toshiba for reading */
 125
 126         if (!(str = fopen(TOSH_PROC, "r")))
 127                 return HCI_FAILURE;
 128
 129         /* scan in the information */
 130
 131         fgets(buffer, sizeof(buffer)-1, str);
 132         fclose(str);
 133         buffer[sizeof(buffer)-1] = '\0';
 134         sscanf(buffer, "%*s %x %*d.%*d %*d.%*d %*x %*x\n", (unsigned int *) id);
 135
 136         return HCI_SUCCESS;
 137 }
 138
 139
 140 /*
 141  * Return the LCD Panel type
 142  */
 143 int HciGetLCDPanelType(int *resolution, int *type)
 144 {
 145         SMMRegisters regs;
 146
 147         regs.eax = HCI_GET;
 148         regs.ebx = HCI_FLAT_PANEL;
 149         HciFunction(&regs);
 150
 151         *resolution = (regs.ecx & 0xff00)>>8;
 152         *type = regs.ecx & 0xff;
 153
 154         return HCI_SUCCESS;
 155 }