package/base-files/files/lib/functions/leds.sh

   1 # Copyright (C) 2013 OpenWrt.org
   2
   3 get_dt_led_path() {
   4         local ledpath
   5         local basepath="/proc/device-tree"
   6         local nodepath="$basepath/aliases/led-$1"
   7
   8         [ -f "$nodepath" ] && ledpath=$(cat "$nodepath")
   9         [ -n "$ledpath" ] && ledpath="$basepath$ledpath"
  10
  11         echo "$ledpath"
  12 }
  13
  14 get_dt_led() {
  15         local label
  16         local ledpath=$(get_dt_led_path $1)
  17
  18         [ -n "$ledpath" ] && \
  19                 label=$(cat "$ledpath/label" 2>/dev/null) || \
  20                 label=$(cat "$ledpath/chan-name" 2>/dev/null) || \
  21                 label=$(basename "$ledpath")
  22
  23         echo "$label"
  24 }
  25
  26 led_set_attr() {
  27         [ -f "/sys/class/leds/$1/$2" ] && echo "$3" > "/sys/class/leds/$1/$2"
  28 }
  29
  30 led_timer() {
  31         led_set_attr $1 "trigger" "timer"
  32         led_set_attr $1 "delay_on" "$2"
  33         led_set_attr $1 "delay_off" "$3"
  34 }
  35
  36 led_on() {
  37         led_set_attr $1 "trigger" "none"
  38         led_set_attr $1 "brightness" 255
  39 }
  40
  41 led_off() {
  42         led_set_attr $1 "trigger" "none"
  43         led_set_attr $1 "brightness" 0
  44 }
  45
  46 status_led_restore_trigger() {
  47         local trigger
  48         local ledpath=$(get_dt_led_path $1)
  49
  50         [ -n "$ledpath" ] && \
  51                 trigger=$(cat "$ledpath/linux,default-trigger" 2>/dev/null)
  52
  53         [ -n "$trigger" ] && \
  54                 led_set_attr "$(get_dt_led $1)" "trigger" "$trigger"
  55 }
  56
  57 status_led_set_timer() {
  58         led_timer $status_led "$1" "$2"
  59         [ -n "$status_led2" ] && led_timer $status_led2 "$1" "$2"
  60 }
  61
  62 status_led_set_heartbeat() {
  63         led_set_attr $status_led "trigger" "heartbeat"
  64 }
  65
  66 status_led_on() {
  67         led_on $status_led
  68         [ -n "$status_led2" ] && led_on $status_led2
  69 }
  70
  71 status_led_off() {
  72         led_off $status_led
  73         [ -n "$status_led2" ] && led_off $status_led2
  74 }
  75
  76 status_led_blink_slow() {
  77         led_timer $status_led 1000 1000
  78 }
  79
  80 status_led_blink_fast() {
  81         led_timer $status_led 100 100
  82 }
  83
  84 status_led_blink_preinit() {
  85         led_timer $status_led 100 100
  86 }
  87
  88 status_led_blink_failsafe() {
  89         led_timer $status_led 50 50
  90 }
  91
  92 status_led_blink_preinit_regular() {
  93         led_timer $status_led 200 200
  94 }