recipes/pandora-system/pandora-scripts/op_power.sh

   1 #!/bin/bash
   2
   3 . /usr/pandora/scripts/op_paths.sh
   4
   5 # XXX: better use lockfile (or something), but it's not in current firmware
   6 test -e /tmp/op_power.lock && exit 2
   7 touch /tmp/op_power.lock
   8
   9 debug(){
  10         return 1 # 0 when debugging, 1 when not
  11 }
  12
  13 test -e $(grep /etc/passwd -e $(ps u -C xfce4-session | tail -n1 | awk '{print $1}')| cut -f 6 -d ":")/.lidconfig && lidconfig=$(cat $(grep /etc/passwd -e $(ps u -C xfce4-session | tail -n1 | awk '{print $1}')| cut -f 6 -d ":")/.lidconfig) # read lid conf. file if it exists
  14
  15 #powerbuttonconfig=$(cat $(grep /etc/passwd -e $(ps u -C xfce4-session | tail -n1 | awk '{print $1}')| cut -f 6 -d ":")/.powerbuttonconfig)
  16
  17 if [ -e /tmp/powerstate ]; then
  18         powerstate="$(cat /tmp/powerstate)"
  19 else
  20         powerstate="on"
  21 fi
  22
  23 debug && echo "powerstate=$powerstate"
  24
  25 suspend_net() {
  26         hcistate=$(hciconfig hci0 | grep DOWN)
  27         if [ $hcistate ]; then
  28                 echo "down" > /tmp/hcistate
  29         else
  30                 echo "up" > /tmp/hcistate
  31                 hciconfig hci0 down
  32         fi
  33         wlstate=$(lsmod | grep -m1 wl1251)
  34         if [ -z "$wlstate" ]; then
  35                 echo "down" > /tmp/wlstate
  36         else
  37                 echo "up" > /tmp/wlstate
  38                 ifconfig wlan0 down
  39                 rmmod board_omap3pandora_wifi 2> /dev/null
  40                 rmmod wl1251_sdio wl1251
  41         fi
  42 }
  43
  44 resume_net() {
  45         hcistate=$(cat /tmp/hcistate)
  46         if [ "$hcistate" = "up" ]; then
  47                 hciconfig hci0 up pscan
  48         fi
  49         wlstate=$(cat /tmp/wlstate)
  50         if [ "$wlstate" = "up" ]; then
  51                 /etc/init.d/wl1251-init start
  52         fi
  53         rm -f /tmp/hcistate /tmp/wlstate
  54 }
  55
  56 display_on() {
  57         echo 0 > /sys/class/graphics/fb0/blank
  58
  59         maxbright=$(cat $SYSFS_BACKLIGHT/max_brightness)
  60         oldbright=0
  61         if [ -f /tmp/oldbright ]; then
  62                 oldbright=$(cat /tmp/oldbright)
  63         fi
  64         if [ $oldbright -eq 0 ]; then
  65                 oldbright=$(cat /etc/pandora/conf/brightness.state)
  66         fi
  67         if [ $oldbright -ge 3 ] && [ $oldbright -le $maxbright ]; then
  68                 /usr/pandora/scripts/op_bright.sh $oldbright
  69         else
  70                 /usr/pandora/scripts/op_bright.sh $maxbright
  71         fi
  72 }
  73
  74 display_off() {
  75         brightness=$(cat $SYSFS_BACKLIGHT_BRIGHTNESS)
  76         if [ $brightness -gt 0 ]; then
  77                 echo $brightness > /tmp/oldbright
  78         fi
  79         echo 0 > $SYSFS_BACKLIGHT_BRIGHTNESS
  80
  81         echo 1 > /sys/class/graphics/fb0/blank
  82 }
  83
  84 lowPowerOn(){ #switch from normal to lowpower mode
  85         display_off
  86
  87         pidlist=$(pstree -lpA | grep pnd_run.sh | sed -ne 's/.*(\([0-9]\+\))/\1/p')
  88         for PID in $pidlist
  89         do
  90                 kill -STOP $PID
  91         done
  92
  93         suspend_net
  94         /usr/pandora/scripts/op_cpuspeed.sh 125
  95 }
  96
  97 lowPowerOff(){ # switch from lowpower to normal mode
  98         oldspeed=$(cat /tmp/oldspeed)
  99         /usr/pandora/scripts/op_cpuspeed.sh $oldspeed
 100
 101         display_on
 102         resume_net
 103
 104         pidlist=$(pstree -lpA | grep pnd_run.sh | sed -ne 's/.*(\([0-9]\+\))/\1/p')
 105         for PID in $pidlist
 106         do
 107                 kill -CONT $PID
 108         done
 109         echo 255 > /sys/class/leds/pandora\:\:power/brightness #power LED bright
 110 }
 111
 112 suspend_real() {
 113         delay=0
 114
 115         if ! [ -e /sys/power/state ]; then
 116                 # no kernel suspend support
 117                 return 1
 118         fi
 119
 120         # can't suspend while SGX is in use due to bugs
 121         # (prevents low power states and potential lockup)
 122         if lsof -t /dev/pvrsrvkm > /dev/null; then
 123                 return 1
 124         fi
 125
 126         # TODO: we probably want to NOT do real suspend if:
 127         # - cards don't unmount (running PNDs will break)
 128         # - while charging too, since it stops on suspend?
 129
 130         # FIXME: fix the kernel and get rid of this
 131         suspend_net
 132
 133         # get rid of modules that prevent suspend due to bugs
 134         modules="$(lsmod | awk '{print $1}' | xargs echo)"
 135         blacklist="ehci_hcd g_zero g_audio g_ether g_serial g_midi gadgetfs g_file_storage
 136                 g_mass_storage g_printer g_cdc g_multi g_hid g_dbgp g_nokia g_webcam g_ncm g_acm_ms"
 137         restore_list=""
 138         for mod in $modules; do
 139                 if echo $blacklist | grep -q "\<$mod\>"; then
 140                         restore_list="$restore_list $mod"
 141                         rmmod $mod
 142                         delay=1 # enough?
 143                 fi
 144         done
 145
 146         # must unmount cards because they will be "ejected" on suspend
 147         # (some filesystems may even deadlock if we don't do this due to bugs)
 148         grep "/dev/mmcblk" /proc/mounts | awk '{print $1}' | xargs umount -r
 149
 150         sleep $delay
 151         echo mem > /sys/power/state
 152
 153         # if we are here, either we already resumed or the suspend failed
 154         if [ -n "$restore_list" ]; then
 155                 modprobe $restore_list
 156         fi
 157
 158         resume_net
 159         echo 255 > /sys/class/leds/pandora\:\:power/brightness
 160
 161         # wait here a bit to prevent this script from running again (keep op_power.lock)
 162         # in case user did resume using the power switch.
 163         sleep 2
 164
 165         return 0
 166 }
 167
 168 suspend_() {
 169         # dim power LED
 170         echo 16 > /sys/class/leds/pandora\:\:power/brightness
 171
 172         if suspend_real; then
 173                 # resumed already
 174                 powerstate="on"
 175         else
 176                 lowPowerOn
 177         fi
 178 }
 179
 180 resume() {
 181         if [ "$powerstate" = "on" ]; then
 182                 # nothing to do
 183                 echo "resume called unexpectedly" >&2
 184         else
 185                 lowPowerOff
 186         fi
 187 }
 188
 189 shutdown(){ # warns the user and shuts the pandora down
 190         xfceuser=$(ps u -C xfce4-session | tail -n1 | awk '{print $1}')
 191         time=5
 192         countdown () {
 193                 for i in $(seq $time); do
 194                         precentage=$(echo $i $time | awk '{ printf("%f\n", $1/$2*100) }')
 195                         echo $precentage
 196                         echo "# Shutdown in $(($time-$i))"
 197                         sleep 1
 198                 done
 199         }
 200         countdown | su -c 'DISPLAY=:0.0 zenity --progress --auto-close --text "Shutdown in X" --title "Shutdown"' $xfceuser
 201         if [ $? -eq 0 ]; then
 202         /sbin/shutdown -h now
 203         else
 204         su -c 'DISPLAY=:0.0 zenity --error --text "Shutdown aborted!"' $xfceuser
 205         fi
 206 }
 207
 208 if [[ "$2" == "" ]]; then
 209         if [[ "$1" -le 2 ]]; then # power button was pressed 1-2sec, "suspend"
 210                 if [[ "$powerstate" == "buttonlowpower" ]]; then
 211                         (debug && echo "resume") || resume
 212                         powerstate="on"
 213                 elif [[ "$powerstate" == "on" ]]; then
 214                         powerstate="buttonlowpower"
 215                         (debug && echo "suspend") || suspend_
 216                 fi
 217         elif [[ "$1" -ge 3 ]]; then # power button was pressed 3 sec or longer, shutdown
 218                 if [[ "$powerstate" == "on" ]]; then
 219                         (debug && echo "shutdown") || shutdown
 220                 fi
 221         fi
 222 elif [[ "$2" == "lid" ]]; then
 223         if [[ "$1" == 0 ]]; then # lid was opened
 224                 if [[ "$powerstate" == lid* ]]; then
 225                         case "$lidconfig" in
 226                                 "lowpower")
 227                                         (debug && echo "resume") || resume
 228                                         powerstate="on"
 229                                 ;;
 230                                 *)
 231                                         (debug && echo "display_on") || display_on
 232                                         powerstate="on"
 233                                 ;;
 234                         esac
 235                 fi
 236         elif [[ "$1" == 1 ]]; then # lid was closed
 237                 if [[ "$powerstate" == "on" ]]; then
 238                         case "$lidconfig" in
 239                                 "shutdown")
 240                                         (debug && echo "shutdown") || shutdown
 241                                 ;;
 242                                 "lowpower")
 243                                         powerstate="lidlowpower"
 244                                         (debug && echo "suspend") || suspend_
 245                                 ;;
 246                                 *)
 247                                         (debug && echo "display_off") || display_off
 248                                         powerstate="liddisplayoff"
 249                                 ;;
 250                         esac
 251                 fi
 252         fi
 253  fi
 254 debug && echo "powerstate=$powerstate"
 255 echo "$powerstate" > /tmp/powerstate
 256
 257 rm -f /tmp/op_power.lock