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Text File  |  2012-05-20  |  5.4 KB  |  173 lines
  1. #! /bin/sh
  2. # 
  3. # Laptop mode tools module: usb-autosuspend.
  4. #
  5.  
  6. # Check whether a USB device is listed by ID
  7. listed_by_id() {
  8.     device=$1
  9.     list=$2
  10.     for usbid in $list; do
  11.         if ! echo $usbid | grep -q ':'; then
  12.             log "MSG" "WARNING: Invalid entry \"$usbid\" in \"$2\"."
  13.         fi
  14.         vendor=$(echo $usbid | cut -d: -f1)
  15.         product=$(echo $usbid | cut -d: -f2)
  16.         grep -qi $vendor $device/idVendor 2>/dev/null\
  17.          && grep -qi $product $device/idProduct 2>/dev/null\
  18.          && return 0
  19.     done
  20.     return 1
  21. }
  22.  
  23. # Check whether the USB driver type is blacklisted
  24. listed_by_type() {
  25.     device=$1
  26.     device_base=`basename $device`
  27.     list=$2
  28.     for driver_type in $list; do
  29.         if grep -q DRIVER=$driver_type $device/uevent; then
  30.             return 0
  31.         fi
  32.         # Check child devices as well.  The actual driver type is
  33.         # listed in a child device, not the top-level device.
  34.         for subdevice in $device/$device_base*; do
  35.             if [ -f $subdevice/uevent ]; then
  36.                 if grep -q DRIVER=$driver_type\
  37.                     $subdevice/uevent; then
  38.                     return 0
  39.                 fi
  40.             fi
  41.         done
  42.     done
  43.     return 1
  44. }
  45.  
  46. # Checks whether a device is blacklisted by either ID or driver type
  47. blacklisted() {
  48.     listed_by_id $1 "$AUTOSUSPEND_USBID_BLACKLIST"\
  49.     || listed_by_type $1 "$AUTOSUSPEND_USBTYPE_BLACKLIST"\
  50.     || return 1
  51.     return 0
  52. }
  53.  
  54. # Checks whether a device is whitelisted by either ID or driver type
  55. whitelisted() {
  56.     listed_by_id $1 "$AUTOSUSPEND_USBID_WHITELIST"\
  57.     || listed_by_type $1 "$AUTOSUSPEND_USBTYPE_WHITELIST"\
  58.     || return 1
  59.     return 0
  60. }
  61.  
  62. if [ x$CONTROL_USB_AUTOSUSPEND = x1 ] || [ x$ENABLE_AUTO_MODULES = x1 -a x$CONTROL_USB_AUTOSUSPEND = xauto ]; then
  63.     if [ $ON_AC -eq 1 ]; then
  64.         if [ "$ACTIVATE" -eq 1 ]; then
  65.             SUSPEND_USB_DEVICES="$LM_AC_SUSPEND_USB"
  66.         else
  67.             SUSPEND_USB_DEVICES="$NOLM_AC_SUSPEND_USB"
  68.         fi
  69.     else
  70.         SUSPEND_USB_DEVICES="$BATT_SUSPEND_USB"
  71.     fi
  72.  
  73.     if [ -d /sys/bus/usb/devices ]; then
  74.     if [ "$DEVICES" != "" ]; then
  75.         # If a list of devices has been provided, operate on only the
  76.         # listed USB devices.
  77.         DEVICE_LIST=""
  78.         for DEVICE in $DEVICES; do
  79.             DEVICE_LIST="$DEVICE_LIST $DEVICE"
  80.         done
  81.     else
  82.         # If no list was provided, operate on all USB devices
  83.         DEVICE_LIST=/sys/bus/usb/devices/*
  84.     fi
  85.     else
  86.     # This will rarely happen.
  87.     log "VERBOSE" "There are no USB devices."
  88.     fi
  89.  
  90.     if [ x$SUSPEND_USB_DEVICES = x1 ]; then
  91.       if [ -f /sys/module/usbcore/parameters/autosuspend ]; then
  92.           echo $AUTOSUSPEND_TIMEOUT > /sys/module/usbcore/parameters/autosuspend
  93.           log "VERBOSE" "Enabling autosuspend mode for USBCORE Controller, with timeout $AUTOSUSPEND_TIMEOUT."
  94.       else
  95.           log "VERBOSE" "Not enabling autosuspend mode for USBCORE Controller. Not Supported"
  96.       fi
  97.  
  98.       if [ "$DEVICE_LIST" != "" ]; then
  99.         for usb_device in $DEVICE_LIST; do
  100.           usb_device=`basename $usb_device`;
  101.  
  102.           USE_DEVICE=0
  103.           if [ x$AUTOSUSPEND_USE_WHITELIST = x1 ]; then
  104.             if whitelisted /sys/bus/usb/devices/$usb_device; then
  105.               USE_DEVICE=1
  106.             else
  107.               log "VERBOSE" "Device $usb_device not whitelisted, skipping auto suspend."
  108.             fi
  109.           else
  110.             if ! blacklisted /sys/bus/usb/devices/$usb_device; then
  111.               USE_DEVICE=1
  112.             else
  113.               logger "Device $usb_device is blacklisted, skipping auto suspend."
  114.             fi
  115.           fi
  116.  
  117.           if [ x$USE_DEVICE = x1 ]; then
  118.               if [ -f /sys/bus/usb/devices/$usb_device/power/autosuspend ]; then
  119.                   echo $AUTOSUSPEND_TIMEOUT > /sys/bus/usb/devices/$usb_device/power/autosuspend;
  120.                   log "VERBOSE" "Enabling auto suspend mode for usb device $usb_device."
  121.               else
  122.                   log "VERBOSE" "Not enabling auto suspend mode for usb device $usb_device"
  123.               fi
  124.  
  125.               if [ -f /sys/bus/usb/devices/$usb_device/power/control ]; then
  126.                   echo "auto" > /sys/bus/usb/devices/$usb_device/power/control;
  127.                   log "VERBOSE" "Enabling auto power level for usb device $usb_device."
  128.               elif [ -f /sys/bus/usb/devices/$usb_device/power/level ]; then
  129.                   echo "auto" > /sys/bus/usb/devices/$usb_device/power/level;
  130.                   log "VERBOSE" "Enabling auto power level for usb device $usb_device."
  131.               else
  132.                   log "VERBOSE" "Not enabling auto power level for usb device $usb_device"
  133.               fi
  134.           fi
  135.         done
  136.       fi
  137.     else
  138.       AUTOSUSPEND_TIMEOUT=0
  139.       if [ -f /sys/module/usbcore/parameters/autosuspend ]; then
  140.           echo $AUTOSUSPEND_TIMEOUT > /sys/module/usbcore/parameters/autosuspend
  141.           log "VERBOSE" "Disabling autosuspend mode for USBCORE Controller, with timeout $AUTOSUSPEND_TIMEOUT."
  142.       else
  143.           log "VERBOSE" "Not disabling autosuspend mode for USBCORE Controller. Not Supported"
  144.       fi
  145.  
  146.       if [ "$DEVICE_LIST" != "" ]; then
  147.           for usb_device in $DEVICE_LIST;
  148.           do
  149.           usb_device=`basename $usb_device`;
  150.           if [ -f /sys/bus/usb/devices/$usb_device/power/autosuspend ]; then
  151.               echo $AUTOSUSPEND_TIMEOUT > /sys/bus/usb/devices/$usb_device/power/autosuspend;
  152.               log "VERBOSE" "Disabling auto suspend mode for usb device $usb_device."
  153.           else
  154.               log "VERBOSE" "Not disabling auto suspend mode for usb device $usb_device"
  155.           fi
  156.  
  157.           if [ -f /sys/bus/usb/devices/$usb_device/power/control ]; then
  158.               echo "on" > /sys/bus/usb/devices/$usb_device/power/control;
  159.               log "VERBOSE" "Enabling ON power level for usb device $usb_device."
  160.           elif [ -f /sys/bus/usb/devices/$usb_device/power/level ]; then
  161.               echo "on" > /sys/bus/usb/devices/$usb_device/power/level;
  162.               log "VERBOSE" "Enabling ON power level for usb device $usb_device."
  163.           else
  164.               log "VERBOSE" "Not enabling ON power level for usb device $usb_device"
  165.           fi
  166.           done
  167.       fi
  168.     fi
  169. else
  170.     log "VERBOSE" "USB autosuspend is disabled."
  171. fi
  172.  
  173.