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 $PID
  91         done
  92
  93         suspend_net
  94
  95         cat /proc/pandora/cpu_mhz_max > /tmp/oldspeed
  96         /usr/pandora/scripts/op_cpuspeed.sh 125
  97 }
  98
  99 lowPowerOff(){ # switch from lowpower to normal mode
 100         oldspeed=$(cat /tmp/oldspeed)
 101         /usr/pandora/scripts/op_cpuspeed.sh $oldspeed
 102
 103         display_on
 104         resume_net
 105
 106         pidlist=$(pstree -lpA | grep pnd_run.sh | sed -ne 's/.*(\([0-9]\+\))/\1/p')
 107         for PID in $pidlist
 108         do
 109                 kill -CONT $PID
 110         done
 111         echo 255 > /sys/class/leds/pandora\:\:power/brightness #power LED bright
 112 }
 113
 114 show_message() {
 115         # TODO: check if desktop is visible; maybe use layer3?
 116         xfceuser=$(ps u -C xfce4-session | tail -n1 | awk '{print $1}')
 117         cmd="DISPLAY=:0.0 zenity --info --text \"$1\""
 118         su -c "$cmd" $xfceuser
 119 }
 120
 121 suspend_real() {
 122         delay=0
 123
 124         if ! [ -e /sys/power/state ]; then
 125                 # no kernel suspend support
 126                 return 1
 127         fi
 128
 129         # can't suspend while SGX is in use due to bugs
 130         # (prevents low power states and potential lockup)
 131         if lsof -t /dev/pvrsrvkm > /dev/null; then
 132                 return 1
 133         fi
 134
 135         # TODO: we probably want to NOT do real suspend if:
 136         # - cards don't unmount (running PNDs will break)
 137         # - while charging too, since it stops on suspend?
 138
 139         if ! grep -q 'mmc_core.removable=0' /proc/cmdline; then
 140                 # must unmount cards because they will be "ejected" on suspend
 141                 # (some filesystems may even deadlock if we don't do this due to bugs)
 142                 mounts="$(grep "/dev/mmcblk" /proc/mounts | awk '{print $1}' | xargs echo)"
 143                 for mnt in $mounts; do
 144                         if ! umount $mnt; then
 145                                 show_message "Could not unmount $mnt, using partial suspend only"
 146                                 return 1
 147                         fi
 148                 done
 149                 swaps="$(grep "/dev/mmcblk" /proc/swaps | awk '{print $1}' | xargs echo)"
 150                 for swp in $swaps; do
 151                         if ! swapoff $swp; then
 152                                 show_message "Could not unmount $swp, using partial suspend only"
 153                                 return 1
 154                         fi
 155                 done
 156         else
 157                 if [ ! -e /etc/pandora/suspend-warned ]; then
 158                         show_message "Pandora will now suspend.\n\n\
 159 Please do not remove SD cards while pandora is suspended, doing so will corrupt them."
 160                         touch /etc/pandora/suspend-warned
 161                 fi
 162         fi
 163
 164         # FIXME: fix the kernel and get rid of this
 165         suspend_net
 166
 167         # get rid of modules that prevent suspend due to bugs
 168         modules="$(lsmod | awk '{print $1}' | xargs echo)"
 169         blacklist="ehci_hcd g_zero g_audio g_ether g_serial g_midi gadgetfs g_file_storage
 170                 g_mass_storage g_printer g_cdc g_multi g_hid g_dbgp g_nokia g_webcam g_ncm g_acm_ms"
 171         restore_list=""
 172         for mod in $modules; do
 173                 if echo $blacklist | grep -q "\<$mod\>"; then
 174                         restore_list="$restore_list $mod"
 175                         rmmod $mod
 176                         delay=1 # enough?
 177                 fi
 178         done
 179
 180         sleep $delay
 181         sync
 182         echo mem > /sys/power/state
 183
 184         # if we are here, either we already resumed or the suspend failed
 185         if [ -n "$restore_list" ]; then
 186                 modprobe $restore_list
 187         fi
 188
 189         display_on
 190         resume_net
 191         echo 255 > /sys/class/leds/pandora\:\:power/brightness
 192
 193         # wait here a bit to prevent this script from running again (keep op_power.lock)
 194         # in case user did resume using the power switch.
 195         sleep 2
 196
 197         return 0
 198 }
 199
 200 suspend_() {
 201         # dim power LED
 202         echo 16 > /sys/class/leds/pandora\:\:power/brightness
 203
 204         if suspend_real; then
 205                 # resumed already
 206                 powerstate="on"
 207         else
 208                 lowPowerOn
 209         fi
 210 }
 211
 212 resume() {
 213         if [ "$powerstate" = "on" ]; then
 214                 # nothing to do
 215                 echo "resume called unexpectedly" >&2
 216         else
 217                 lowPowerOff
 218         fi
 219 }
 220
 221 shutdown(){ # warns the user and shuts the pandora down
 222         xfceuser=$(ps u -C xfce4-session | tail -n1 | awk '{print $1}')
 223         time=5
 224         countdown () {
 225                 for i in $(seq $time); do
 226                         precentage=$(echo $i $time | awk '{ printf("%f\n", $1/$2*100) }')
 227                         echo $precentage
 228                         echo "# Shutdown in $(($time-$i))"
 229                         sleep 1
 230                 done
 231         }
 232         countdown | su -c 'DISPLAY=:0.0 zenity --progress --auto-close --text "Shutdown in X" --title "Shutdown"' $xfceuser
 233         if [ $? -eq 0 ]; then
 234         /sbin/shutdown -h now
 235         else
 236         su -c 'DISPLAY=:0.0 zenity --error --text "Shutdown aborted!"' $xfceuser
 237         fi
 238 }
 239
 240 if [[ "$2" == "" ]]; then
 241         if [[ "$1" -le 2 ]]; then # power button was pressed 1-2sec, "suspend"
 242                 if [[ "$powerstate" == "buttonlowpower" ]]; then
 243                         (debug && echo "resume") || resume
 244                         powerstate="on"
 245                 elif [[ "$powerstate" == "on" ]]; then
 246                         powerstate="buttonlowpower"
 247                         (debug && echo "suspend") || suspend_
 248                 elif [[ "$powerstate" == "liddisplayoff" ]]; then
 249                         powerstate="buttonlowpower"
 250                         (debug && echo "suspend") || suspend_
 251                 fi
 252         elif [[ "$1" -ge 3 ]]; then # power button was pressed 3 sec or longer, shutdown
 253                 if [[ "$powerstate" == "on" ]]; then
 254                         (debug && echo "shutdown") || shutdown
 255                 fi
 256         fi
 257 elif [[ "$2" == "lid" ]]; then
 258         if [[ "$1" == 0 ]]; then # lid was opened
 259                 if [[ "$powerstate" == lid* ]]; then
 260                         case "$lidconfig" in
 261                                 "lowpower")
 262                                         (debug && echo "resume") || resume
 263                                         powerstate="on"
 264                                 ;;
 265                                 *)
 266                                         (debug && echo "display_on") || display_on
 267                                         powerstate="on"
 268                                 ;;
 269                         esac
 270                 fi
 271         elif [[ "$1" == 1 ]]; then # lid was closed
 272                 if [[ "$powerstate" == "on" ]]; then
 273                         case "$lidconfig" in
 274                                 "shutdown")
 275                                         (debug && echo "shutdown") || shutdown
 276                                 ;;
 277                                 "lowpower")
 278                                         powerstate="lidlowpower"
 279                                         (debug && echo "suspend") || suspend_
 280                                 ;;
 281                                 *)
 282                                         (debug && echo "display_off") || display_off
 283                                         powerstate="liddisplayoff"
 284                                 ;;
 285                         esac
 286                 fi
 287         fi
 288  fi
 289 debug && echo "powerstate=$powerstate"
 290 echo "$powerstate" > /tmp/powerstate
 291
 292 rm -f /tmp/op_power.lock