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" $xfceuser
 119 }
 120
 121 suspend_real() {
 122         delay=0
 123
 124         if ! [ -e /sys/power/state ]; then
 125                 # no kernel suspend support
 126                 return 1
 127         fi
 128
 129         current_now="$(cat /sys/class/power_supply/bq27500-0/current_now)"
 130
 131         if [ $current_now -gt 0 ]; then
 132                 return 1
 133                 #don't suspend while unit is charging
 134         fi
 135
 136         # can't suspend while SGX is in use due to bugs
 137         # (prevents low power states and potential lockup)
 138         if lsof -t /dev/pvrsrvkm > /dev/null; then
 139                 return 1
 140         fi
 141
 142         # TODO: we probably want to NOT do real suspend if:
 143         # - cards don't unmount (running PNDs will break)
 144         # - while charging too, since it stops on suspend?
 145
 146         if ! grep -q 'mmc_core.removable=0' /proc/cmdline; then
 147                 # must unmount cards because they will be "ejected" on suspend
 148                 # (some filesystems may even deadlock if we don't do this due to bugs)
 149                 mounts="$(grep "/dev/mmcblk" /proc/mounts | awk '{print $1}' | xargs echo)"
 150                 for mnt in $mounts; do
 151                         if ! umount $mnt; then
 152                                 show_message "Could not unmount $mnt, using partial suspend only"
 153                                 return 1
 154                         fi
 155                 done
 156                 swaps="$(grep "/dev/mmcblk" /proc/swaps | awk '{print $1}' | xargs echo)"
 157                 for swp in $swaps; do
 158                         if ! swapoff $swp; then
 159                                 show_message "Could not unmount $swp, using partial suspend only"
 160                                 return 1
 161                         fi
 162                 done
 163         else
 164                 if [ ! -e /etc/pandora/suspend-warned ]; then
 165                         show_message "Pandora will now suspend.\n\n\
 166 Please do not remove SD cards while pandora is suspended, doing so will corrupt them."
 167                         touch /etc/pandora/suspend-warned
 168                 fi
 169         fi
 170
 171         # FIXME: fix the kernel and get rid of this
 172         suspend_net
 173
 174         # get rid of modules that prevent suspend due to bugs
 175         modules="$(lsmod | awk '{print $1}' | xargs echo)"
 176         blacklist="ehci_hcd g_zero g_audio g_ether g_serial g_midi gadgetfs g_file_storage
 177                 g_mass_storage g_printer g_cdc g_multi g_hid g_dbgp g_nokia g_webcam g_ncm g_acm_ms"
 178         restore_list=""
 179         for mod in $modules; do
 180                 if echo $blacklist | grep -q "\<$mod\>"; then
 181                         restore_list="$restore_list $mod"
 182                         rmmod $mod
 183                         delay=1 # enough?
 184                 fi
 185         done
 186
 187         sleep $delay
 188         sync
 189         echo mem > /sys/power/state
 190
 191         # if we are here, either we already resumed or the suspend failed
 192         if [ -n "$restore_list" ]; then
 193                 modprobe $restore_list
 194         fi
 195
 196         display_on
 197         resume_net
 198         echo 255 > /sys/class/leds/pandora\:\:power/brightness
 199
 200         # wait here a bit to prevent this script from running again (keep op_power.lock)
 201         # in case user did resume using the power switch.
 202         sleep 2
 203
 204         return 0
 205 }
 206
 207 suspend_() {
 208         # dim power LED
 209         echo 16 > /sys/class/leds/pandora\:\:power/brightness
 210
 211         if suspend_real; then
 212                 # resumed already
 213                 powerstate="on"
 214         else
 215                 lowPowerOn
 216         fi
 217 }
 218
 219 resume() {
 220         if [ "$powerstate" = "on" ]; then
 221                 # nothing to do
 222                 echo "resume called unexpectedly" >&2
 223         else
 224                 lowPowerOff
 225         fi
 226 }
 227
 228 shutdown(){ # warns the user and shuts the pandora down
 229         xfceuser=$(ps u -C xfce4-session | tail -n1 | awk '{print $1}')
 230         time=5
 231         countdown () {
 232                 for i in $(seq $time); do
 233                         precentage=$(echo $i $time | awk '{ printf("%f\n", $1/$2*100) }')
 234                         echo $precentage
 235                         echo "# Shutdown in $(($time-$i))"
 236                         sleep 1
 237                 done
 238         }
 239         countdown | su -c 'DISPLAY=:0.0 zenity --progress --auto-close --text "Shutdown in X" --title "Shutdown"' $xfceuser
 240         if [ $? -eq 0 ]; then
 241         /sbin/shutdown -h now
 242         else
 243         su -c 'DISPLAY=:0.0 zenity --error --text "Shutdown aborted!"' $xfceuser
 244         fi
 245 }
 246
 247 if [[ "$2" == "" ]]; then
 248         if [[ "$1" -le 2 ]]; then # power button was pressed 1-2sec, "suspend"
 249                 if [[ "$powerstate" == "buttonlowpower" ]]; then
 250                         (debug && echo "resume") || resume
 251                         powerstate="on"
 252                 elif [[ "$powerstate" == "on" ]]; then
 253                         powerstate="buttonlowpower"
 254                         (debug && echo "suspend") || suspend_
 255                 elif [[ "$powerstate" == "liddisplayoff" ]]; then
 256                         powerstate="buttonlowpower"
 257                         (debug && echo "suspend") || suspend_
 258                 fi
 259         elif [[ "$1" -ge 3 ]]; then # power button was pressed 3 sec or longer, shutdown
 260                 if [[ "$powerstate" == "on" ]]; then
 261                         (debug && echo "shutdown") || shutdown
 262                 fi
 263         fi
 264 elif [[ "$2" == "lid" ]]; then
 265         if [[ "$1" == 0 ]]; then # lid was opened
 266                 if [[ "$powerstate" == lid* ]]; then
 267                         case "$lidconfig" in
 268                                 "lowpower")
 269                                         (debug && echo "resume") || resume
 270                                         powerstate="on"
 271                                 ;;
 272                                 *)
 273                                         (debug && echo "display_on") || display_on
 274                                         powerstate="on"
 275                                 ;;
 276                         esac
 277                 fi
 278         elif [[ "$1" == 1 ]]; then # lid was closed
 279                 if [[ "$powerstate" == "on" ]]; then
 280                         case "$lidconfig" in
 281                                 "shutdown")
 282                                         (debug && echo "shutdown") || shutdown
 283                                 ;;
 284                                 "lowpower")
 285                                         powerstate="lidlowpower"
 286                                         (debug && echo "suspend") || suspend_
 287                                 ;;
 288                                 *)
 289                                         (debug && echo "display_off") || display_off
 290                                         powerstate="liddisplayoff"
 291                                 ;;
 292                         esac
 293                 fi
 294         fi
 295  fi
 296 debug && echo "powerstate=$powerstate"
 297 echo "$powerstate" > /tmp/powerstate
 298
 299 rm -f /tmp/op_power.lock