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 [ "$wlstate" = "up" ]; then
  51                 /etc/init.d/wl1251-init start
  52         fi
  53         rm -f /tmp/hcistate /tmp/wlstate
  54 }
  55
  56 display_on() {
  57         echo 0 > /sys/class/graphics/fb0/blank
  58
  59         # only bother restoring brightness if it's 0
  60         # (old kernel or user messed it up somehow)
  61         brightness=$(cat $SYSFS_BACKLIGHT_BRIGHTNESS)
  62         if [ $brightness -gt 0 ]; then
  63                 return 0
  64         fi
  65
  66         maxbright=$(cat $SYSFS_BACKLIGHT/max_brightness)
  67         oldbright=0
  68         if [ -f /tmp/oldbright ]; then
  69                 oldbright=$(cat /tmp/oldbright)
  70         fi
  71         if [ $oldbright -eq 0 ]; then
  72                 oldbright=$(cat /etc/pandora/conf/brightness.state)
  73         fi
  74         if [ $oldbright -ge 3 ] && [ $oldbright -le $maxbright ]; then
  75                 /usr/pandora/scripts/op_bright.sh $oldbright
  76         else
  77                 /usr/pandora/scripts/op_bright.sh $maxbright
  78         fi
  79 }
  80
  81 display_off() {
  82         brightness=$(cat $SYSFS_BACKLIGHT_BRIGHTNESS)
  83         if [ $brightness -gt 0 ]; then
  84                 echo $brightness > /tmp/oldbright
  85         fi
  86         kernel_major=`uname -r | cut -c 1`
  87         if [ "$kernel_major" = "2" ]; then
  88                 echo 0 > $SYSFS_BACKLIGHT_BRIGHTNESS
  89         fi
  90
  91         echo 1 > /sys/class/graphics/fb0/blank
  92 }
  93
  94 lowPowerOn(){ #switch from normal to lowpower mode
  95         display_off
  96
  97         pidlist=$(pstree -lpA | grep pnd_run.sh | sed -ne 's/.*(\([0-9]\+\))/\1/p')
  98         for PID in $pidlist
  99         do
 100                 kill -STOP $PID
 101         done
 102
 103         suspend_net
 104
 105         cat /proc/pandora/cpu_mhz_max > /tmp/oldspeed
 106         /usr/pandora/scripts/op_cpuspeed.sh -n 125
 107 }
 108
 109 lowPowerOff(){ # switch from lowpower to normal mode
 110         oldspeed=$(cat /tmp/oldspeed)
 111         /usr/pandora/scripts/op_cpuspeed.sh -n $oldspeed
 112         rm -f /tmp/oldspeed
 113
 114         display_on
 115         resume_net
 116
 117         pidlist=$(pstree -lpA | grep pnd_run.sh | sed -ne 's/.*(\([0-9]\+\))/\1/p')
 118         for PID in $pidlist
 119         do
 120                 kill -CONT $PID
 121         done
 122         echo 255 > /sys/class/leds/pandora\:\:power/brightness #power LED bright
 123 }
 124
 125 display_on_with_checks() {
 126         # after turning on the display, we don't want lowpower state
 127         # (which could be active because of some races)
 128         if [ "$powerstate" = "buttonlowpower" -o "$powerstate" = "lidlowpower" -o \
 129              -e /tmp/oldspeed ]
 130         then
 131                 lowPowerOff
 132         else
 133                 display_on
 134         fi
 135 }
 136
 137 show_message() {
 138         # TODO: check if desktop is visible; maybe use layer3?
 139         xfceuser=$(ps u -C xfce4-session | tail -n1 | awk '{print $1}')
 140         cmd="DISPLAY=:0.0 zenity --info --text \"$1\" --timeout 10"
 141         su -c "$cmd" $xfceuser
 142 }
 143
 144 suspend_real() {
 145         delay=0
 146
 147         if ! [ -e /sys/power/state ]; then
 148                 # no kernel suspend support
 149                 return 1
 150         fi
 151
 152         current_now="$(cat /sys/class/power_supply/bq27500-0/current_now)"
 153
 154         if [ $current_now -gt 0 ]; then
 155                 return 1
 156                 #don't suspend while unit is charging
 157         fi
 158
 159         # can't suspend while SGX is in use due to bugs
 160         # (prevents low power states and potential lockup)
 161         if lsof -t /dev/pvrsrvkm > /dev/null; then
 162                 return 1
 163         fi
 164
 165         if ! grep -q 'mmc_core.removable=0' /proc/cmdline; then
 166                 # must unmount cards because they will be "ejected" on suspend
 167                 # (some filesystems may even deadlock if we don't do this due to bugs)
 168                 mounts="$(grep "/dev/mmcblk" /proc/mounts | awk '{print $1}' | xargs echo)"
 169                 for mnt in $mounts; do
 170                         if ! umount $mnt; then
 171                                 show_message "Could not unmount $mnt, using partial suspend only"
 172                                 return 1
 173                         fi
 174                 done
 175                 swaps="$(grep "/dev/mmcblk" /proc/swaps | awk '{print $1}' | xargs echo)"
 176                 for swp in $swaps; do
 177                         if ! swapoff $swp; then
 178                                 show_message "Could not unmount $swp, using partial suspend only"
 179                                 return 1
 180                         fi
 181                 done
 182         else
 183                 if [ ! -e /etc/pandora/suspend-warned ]; then
 184                         show_message "Pandora will now suspend.\n\n\
 185 Please do not remove SD cards while pandora is suspended, doing so will corrupt them."
 186                         touch /etc/pandora/suspend-warned
 187                 fi
 188         fi
 189
 190         # FIXME: fix the kernel and get rid of this
 191         suspend_net
 192
 193         # get rid of modules that prevent suspend due to bugs
 194         modules="$(lsmod | awk '{print $1}' | xargs echo)"
 195         blacklist="g_zero g_audio g_ether g_serial g_midi gadgetfs g_file_storage
 196                 g_mass_storage g_printer g_cdc g_multi g_hid g_dbgp g_nokia g_webcam g_ncm g_acm_ms
 197                 ehci_hcd bridgedriver"
 198         restore_list=""
 199         for mod in $modules; do
 200                 if echo $blacklist | grep -q "\<$mod\>"; then
 201                         restore_list="$restore_list $mod"
 202                         rmmod $mod
 203                         delay=1 # enough?
 204                 fi
 205         done
 206
 207         sleep $delay
 208         sync
 209         echo mem > /sys/power/state
 210
 211         # if we are here, either we already resumed or the suspend failed
 212         if [ -n "$restore_list" ]; then
 213                 for module in $restore_list; do
 214                         modprobe $module
 215                 done
 216         fi
 217
 218         display_on
 219         resume_net
 220         echo 255 > /sys/class/leds/pandora\:\:power/brightness
 221
 222         # wait here a bit to prevent this script from running again (keep op_power.lock)
 223         # in case user did resume using the power switch.
 224         sleep 2
 225
 226         return 0
 227 }
 228
 229 suspend_() {
 230         # dim power LED
 231         echo 16 > /sys/class/leds/pandora\:\:power/brightness
 232
 233         if suspend_real; then
 234                 # resumed already
 235                 powerstate="on"
 236         else
 237                 lowPowerOn
 238         fi
 239 }
 240
 241 resume() {
 242         if [ "$powerstate" = "on" ]; then
 243                 # nothing to do
 244                 echo "resume called unexpectedly" >&2
 245         else
 246                 lowPowerOff
 247         fi
 248 }
 249
 250 shutdown(){ # warns the user and shuts the pandora down
 251         xfceuser=$(ps u -C xfce4-session | tail -n1 | awk '{print $1}')
 252         time=5
 253         countdown () {
 254                 for i in $(seq $time); do
 255                         precentage=$(echo $i $time | awk '{ printf("%f\n", $1/$2*100) }')
 256                         echo $precentage
 257                         echo "# Shutdown in $(($time-$i))"
 258                         sleep 1
 259                 done
 260         }
 261         countdown | su -c 'DISPLAY=:0.0 zenity --progress --auto-close --text "Shutdown in X" --title "Shutdown"' $xfceuser
 262         if [ $? -eq 0 ]; then
 263         /sbin/shutdown -h now
 264         else
 265         su -c 'DISPLAY=:0.0 zenity --error --text "Shutdown aborted!"' $xfceuser
 266         fi
 267 }
 268
 269 if [[ "$2" == "" ]]; then
 270         if [[ "$1" -le 2 ]]; then # power button was pressed 1-2sec, "suspend"
 271                 if [[ "$powerstate" == "buttonlowpower" ]]; then
 272                         (debug && echo "resume") || resume
 273                         powerstate="on"
 274                 elif [[ "$powerstate" == "on" ]]; then
 275                         powerstate="buttonlowpower"
 276                         (debug && echo "suspend") || suspend_
 277                 elif [[ "$powerstate" == "liddisplayoff" ]]; then
 278                         powerstate="buttonlowpower"
 279                         (debug && echo "suspend") || suspend_
 280                 fi
 281         elif [[ "$1" -ge 3 ]]; then # power button was pressed 3 sec or longer, shutdown
 282                 if [[ "$powerstate" == "on" ]]; then
 283                         (debug && echo "shutdown") || shutdown
 284                 fi
 285         fi
 286 elif [[ "$2" == "lid" ]]; then
 287         if [[ "$1" == 0 ]]; then # lid was opened
 288                 if [[ "$powerstate" == lid* ]]; then
 289                         case "$lidconfig" in
 290                                 "lowpower")
 291                                         (debug && echo "resume") || resume
 292                                         powerstate="on"
 293                                 ;;
 294                                 *)
 295                                         (debug && echo "display_on") || display_on_with_checks
 296                                         powerstate="on"
 297                                 ;;
 298                         esac
 299                 fi
 300         elif [[ "$1" == 1 ]]; then # lid was closed
 301                 if [[ "$powerstate" == "on" ]]; then
 302                         case "$lidconfig" in
 303                                 "shutdown")
 304                                         (debug && echo "shutdown") || shutdown
 305                                 ;;
 306                                 "lowpower")
 307                                         powerstate="lidlowpower"
 308                                         (debug && echo "suspend") || suspend_
 309                                 ;;
 310                                 *)
 311                                         (debug && echo "display_off") || display_off
 312                                         powerstate="liddisplayoff"
 313                                 ;;
 314                         esac
 315                 fi
 316         fi
 317 elif [[ "$2" == "screensaver" ]]; then
 318         # warning: don't try to interact with X or do real suspend here -
 319         # will cause various deadlocks
 320         unset DISPLAY
 321
 322         if [[ "$1" == 0 ]]; then # deactivate screensaver
 323                 display_on_with_checks
 324                 powerstate="on"
 325         elif [[ "$1" == 1 ]]; then # activate screensaver
 326                 display_off
 327         fi
 328 fi
 329
 330 debug && echo "powerstate=$powerstate"
 331 echo "$powerstate" > /tmp/powerstate
 332
 333 rm -f /tmp/op_power.lock