wmpower/src/power_management/compal/compal_lib.c

   1 /***************************************************************************
   2                         compal_lib.c  -  description
   3                              -------------------
   4     begin                : Oct 01 2003
   5     copyright            : (C) 2003 by Francisco Rodrigo Escobedo Robles
   6     e-mail               : frer@pepix.net
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  *   This program is distributed in the hope that it will be useful,       *
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  19  *   GNU General Public License for more details.                          *
  20  *                                                                         *
  21  *   You should have received a copy of the GNU General Public License     *
  22  *   along with this program; if not, write to the                         *
  23  *   Free Software Foundation, Inc.,                                       *
  24  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.              *
  25  *                                                                         *
  26  ***************************************************************************/
  27
  28  /***************************************************************************
  29        Many thanks to Soós Péter <sp@osb.hu> and the omke project team
  30                    I could never have done this otherwise
  31  ***************************************************************************/
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <time.h>
  37 #include <ctype.h>
  38
  39 #include "compal_lib.h"
  40 #include "lib_utils.h"
  41 #include "power_management.h"
  42
  43
  44
  45 /* gets a value from a strtok-ed buffer; for reading from /proc */
  46 char *getvaluefromhash (char *key, char *hash)
  47 {
  48         char *value;
  49         char *lastchar;
  50
  51
  52         for ( ;
  53                  NULL != hash && strcmp (key, hash) ;
  54                  hash = strtok (NULL, ":\n"))
  55                 ;
  56
  57         value = strtok (NULL, ":\n");
  58
  59         while (*value == ' ') ++value;
  60
  61         for (lastchar = value + strlen (value) ;
  62                  *--lastchar == ' ' ;
  63                  *lastchar = '\0')
  64                  ;
  65
  66         return value;
  67 }
  68
  69
  70
  71 int machine_is_compal (void)
  72 {
  73         FILE *fp = fopen(COMPAL_PROC_FILE_DMI, "r");
  74         char  buf [COMPAL_MAX_DMI_INFO + 1];
  75         char *ptr;
  76         char *vendor;
  77         char *prodname;
  78
  79
  80         if (!fp) return 0;
  81
  82         fread  (&buf, 1, COMPAL_MAX_DMI_INFO, fp);
  83         fclose (fp);
  84
  85         /* always get the values in order! */
  86         ptr      = strtok (buf, ":\n");
  87         vendor   = getvaluefromhash ("System Vendor", ptr);
  88         prodname = getvaluefromhash ("Product Name", ptr);
  89         sprintf (compal_model, "%s %s", vendor, prodname);
  90
  91         return 1;
  92 }
  93
  94
  95
  96 int compal_get_fan_status (void)
  97 {
  98         FILE *fp = fopen (COMPAL_PROC_FILE_FAN, "r");
  99         char  fan_status[3];
 100
 101         if (!fp) return PM_Error;
 102
 103         if (fscanf (fp, "%*s%*s%2s", fan_status) != 1)
 104         {
 105                 fclose (fp);
 106                 return PM_Error;
 107         }
 108         fclose (fp);
 109
 110         if (!strcmp (fan_status, "on")) return 1;
 111         return 0;
 112 }
 113
 114
 115
 116 int compal_get_temperature (void)
 117 {
 118         FILE *fp = fopen (COMPAL_PROC_FILE_TEMP, "r");
 119         int   result;
 120
 121         if (!fp) return PM_Error;
 122
 123         if (fscanf(fp, "%*s%*s%d", &result) == 1)
 124         {
 125                 fclose(fp);
 126                 return result;
 127         }
 128
 129         fclose(fp);
 130         return PM_Error;
 131 }
 132
 133
 134
 135 int compal_get_lcd_brightness (void)
 136 {
 137         FILE *fp = fopen (COMPAL_PROC_FILE_LCD, "r");
 138         int   brightness;
 139
 140         if (!fp) return PM_Error;
 141
 142         if (fscanf (fp, "%*s%*s%d", &brightness) == 1)
 143         {
 144                 fclose (fp);
 145                 return brightness;
 146         }
 147
 148         fclose (fp);
 149         return PM_Error;
 150 }
 151
 152
 153
 154 int compal_set_lcd_brightness (int brightness)
 155 {
 156         FILE *fp = fopen (COMPAL_PROC_FILE_LCD, "w");
 157
 158         if (!fp) return PM_Error;
 159
 160         if (brightness < COMPAL_LCD_MIN) brightness = COMPAL_LCD_MIN;
 161         if (brightness > COMPAL_LCD_MAX) brightness = COMPAL_LCD_MAX;
 162         if (maxBrightness != -1 && brightness > maxBrightness) brightness = maxBrightness;
 163         if (minBrightness != -1 && brightness < minBrightness) brightness = minBrightness;
 164
 165         fprintf (fp, "%i", brightness);
 166         fclose  (fp);
 167         return 0;
 168 }
 169
 170
 171
 172 void Compal_lcdBrightness_UpOneStep (void)
 173 {
 174         compal_set_lcd_brightness (compal_get_lcd_brightness () + 1);
 175 }
 176
 177
 178
 179 void Compal_lcdBrightness_DownOneStep (void)
 180 {
 181         compal_set_lcd_brightness (compal_get_lcd_brightness () - 1);
 182 }