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# Copyright (C) 2013 OpenWrt.org
get_dt_led_path() {
local ledpath
local basepath="/proc/device-tree"
local nodepath="$basepath/aliases/led-$1"
[ -f "$nodepath" ] && ledpath=$(cat "$nodepath")
[ -n "$ledpath" ] && ledpath="$basepath$ledpath"
echo "$ledpath"
}
get_dt_led_color_func() {
local enum
local func
local idx
local label
[ -e "$1/function" ] && func=$(cat "$1/function")
[ -e "$1/color" ] && idx=$((0x$(hexdump -n 4 -e '4/1 "%02x"' "$1/color")))
[ -e "$1/function-enumerator" ] && \
enum=$((0x$(hexdump -n 4 -e '4/1 "%02x"' "$1/function-enumerator")))
[ -z "$idx" ] && [ -z "$func" ] && return 2
if [ -n "$idx" ]; then
for color in "white" "red" "green" "blue" "amber" \
"violet" "yellow" "ir" "multicolor" "rgb" \
"purple" "orange" "pink" "cyan" "lime"
do
[ $idx -eq 0 ] && label="$color" && break
idx=$((idx-1))
done
fi
label="$label:$func"
[ -n "$enum" ] && label="$label-$enum"
echo "$label"
return 0
}
get_dt_led() {
local label
local ledpath=$(get_dt_led_path $1)
[ -n "$ledpath" ] && \
label=$(cat "$ledpath/label" 2>/dev/null) || \
label=$(cat "$ledpath/chan-name" 2>/dev/null) || \
label=$(get_dt_led_color_func "$ledpath") || \
label=$(basename "$ledpath")
echo "$label"
}
led_set_attr() {
[ -f "/sys/class/leds/$1/$2" ] && echo "$3" > "/sys/class/leds/$1/$2"
}
led_timer() {
led_set_attr $1 "trigger" "timer"
led_set_attr $1 "delay_on" "$2"
led_set_attr $1 "delay_off" "$3"
}
led_on() {
led_set_attr $1 "trigger" "none"
led_set_attr $1 "brightness" 255
}
led_off() {
led_set_attr $1 "trigger" "none"
led_set_attr $1 "brightness" 0
}
status_led_restore_trigger() {
local trigger
local ledpath=$(get_dt_led_path $1)
[ -n "$ledpath" ] && \
trigger=$(cat "$ledpath/linux,default-trigger" 2>/dev/null)
[ -n "$trigger" ] && \
led_set_attr "$(get_dt_led $1)" "trigger" "$trigger"
}
status_led_set_timer() {
led_timer $status_led "$1" "$2"
[ -n "$status_led2" ] && led_timer $status_led2 "$1" "$2"
}
status_led_set_heartbeat() {
led_set_attr $status_led "trigger" "heartbeat"
}
status_led_on() {
led_on $status_led
[ -n "$status_led2" ] && led_on $status_led2
}
status_led_off() {
led_off $status_led
[ -n "$status_led2" ] && led_off $status_led2
}
status_led_blink_slow() {
led_timer $status_led 1000 1000
}
status_led_blink_fast() {
led_timer $status_led 100 100
}
status_led_blink_preinit() {
led_timer $status_led 100 100
}
status_led_blink_failsafe() {
led_timer $status_led 50 50
}
status_led_blink_preinit_regular() {
led_timer $status_led 200 200
}
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