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

   1 #!/bin/sh
   2 # Copyright (C) 2013 OpenWrt.org
   3
   4 get_dt_led_path() {
   5         local ledpath
   6         local basepath="/proc/device-tree"
   7         local nodepath="$basepath/aliases/led-$1"
   8
   9         [ -f "$nodepath" ] && ledpath=$(cat "$nodepath")
  10         [ -n "$ledpath" ] && ledpath="$basepath$ledpath"
  11
  12         echo "$ledpath"
  13 }
  14
  15 get_dt_led() {
  16         local label
  17         local ledpath=$(get_dt_led_path $1)
  18
  19         [ -n "$ledpath" ] && \
  20                 label=$(cat "$ledpath/label" 2>/dev/null) || \
  21                 label=$(cat "$ledpath/chan-name" 2>/dev/null) || \
  22                 label=$(basename "$ledpath")
  23
  24         echo "$label"
  25 }
  26
  27 led_set_attr() {
  28         [ -f "/sys/class/leds/$1/$2" ] && echo "$3" > "/sys/class/leds/$1/$2"
  29 }
  30
  31 led_timer() {
  32         led_set_attr $1 "trigger" "timer"
  33         led_set_attr $1 "delay_on" "$2"
  34         led_set_attr $1 "delay_off" "$3"
  35 }
  36
  37 led_on() {
  38         led_set_attr $1 "trigger" "none"
  39         led_set_attr $1 "brightness" 255
  40 }
  41
  42 led_off() {
  43         led_set_attr $1 "trigger" "none"
  44         led_set_attr $1 "brightness" 0
  45 }
  46
  47 status_led_restore_trigger() {
  48         local trigger
  49         local ledpath=$(get_dt_led_path $1)
  50
  51         [ -n "$ledpath" ] && \
  52                 trigger=$(cat "$ledpath/linux,default-trigger" 2>/dev/null)
  53
  54         [ -n "$trigger" ] && \
  55                 led_set_attr "$(get_dt_led $1)" "trigger" "$trigger"
  56 }
  57
  58 status_led_set_timer() {
  59         led_timer $status_led "$1" "$2"
  60         [ -n "$status_led2" ] && led_timer $status_led2 "$1" "$2"
  61 }
  62
  63 status_led_set_heartbeat() {
  64         led_set_attr $status_led "trigger" "heartbeat"
  65 }
  66
  67 status_led_on() {
  68         led_on $status_led
  69         [ -n "$status_led2" ] && led_on $status_led2
  70 }
  71
  72 status_led_off() {
  73         led_off $status_led
  74         [ -n "$status_led2" ] && led_off $status_led2
  75 }
  76
  77 status_led_blink_slow() {
  78         led_timer $status_led 1000 1000
  79 }
  80
  81 status_led_blink_fast() {
  82         led_timer $status_led 100 100
  83 }
  84
  85 status_led_blink_preinit() {
  86         led_timer $status_led 100 100
  87 }
  88
  89 status_led_blink_failsafe() {
  90         led_timer $status_led 50 50
  91 }
  92
  93 status_led_blink_preinit_regular() {
  94         led_timer $status_led 200 200
  95 }