zylonite_vcc_sdio.sh

marvel USB linux无线网卡驱动,已经移植到ARM9,可以编译使用.

#!/bin/sh

CPU_VOLTAGE=/sys/devices/system/cpu/cpu0/voltage

usage()
{
  echo "Usage: $0 [1.8v-3.2v]"
}

get_vol()
{
  VCC=`cat $CPU_VOLTAGE`
#  echo "VCC=$VCC"
#  echo ""
  line=0
  for vcc_x in Core Sram IO MSL LCD USB CARD0 CARD1 MEM DF CI TSI ; do
    let "line += 1"
    vol=`echo $VCC | cut -d ";" -f $line`
#    echo "$line: vcc_x=$vcc_x, vol=$vol"
    x=`echo $vol | cut -d "_" -f 2`
    x=`echo $x | cut -d ":" -f 1`
    x=`expr "$x" : '[[:space:]]*\(.*\)[[:space:]]*$'`
    if [ $x != $vcc_x ]; then
      echo "$line: vcc_x=$vcc_x, x=$x MISMATCH"
      exit 1
    fi
    mv=`echo $vol | cut -d ":" -f 2`
    mv=`expr "$mv" : '[[:space:]]*\(.*\)[[:space:]]*$'`
    echo "$line: $vcc_x=$mv"
    if [ ! -z "$1" ]; then
      if [ $vcc_x = "CARD0" ] || [ $vcc_x = "CARD1" ]; then
        mv="$1"
      fi
      if [ $line -eq 1 ]; then
        new_vol="$mv"
      else
        new_vol="$new_vol,$mv"
      fi
    fi
  done
}

set_vol()
{
  get_vol "$1"
  sleep 1
  echo "new_vol=$new_vol"
  echo "$new_vol" > $CPU_VOLTAGE
  sleep 1
  get_vol ""
}

if [ $# -eq 0 ] ; then
  get_vol
elif [ $# -eq 1 ] ; then
  while [ -n "$1" ]; do
    case $1 in
      1.8v) set_vol "1800mv"; break;;
      1.9v) set_vol "1900mv"; break;;
      2.0v) set_vol "2000mv"; break;;
      2.1v) set_vol "2100mv"; break;;
      2.2v) set_vol "2200mv"; break;;
      2.3v) set_vol "2300mv"; break;;
      2.4v) set_vol "2400mv"; break;;
      2.5v) set_vol "2500mv"; break;;
      2.6v) set_vol "2600mv"; break;;
      2.7v) set_vol "2700mv"; break;;
      2.8v) set_vol "2800mv"; break;;
      2.9v) set_vol "2900mv"; break;;
      3.0v) set_vol "3000mv"; break;;
      3.1v) set_vol "3100mv"; break;;
      3.2v) set_vol "3200mv"; break;;
      *) usage; break;;
  esac
  done
else
  usage
fi

exit 0