openwrt/package/base-files/files/lib/functions/leds.sh
Christian Lamparter a487e67cbc base-files: support label-property-less in get_dt_leds
The LED's "label" property has been deprecated in upstream by:

|commit c5d18dd6b64e09dd6984bda9bdd55160af537a8c
|Author: Jacek Anaszewski <jacek.anaszewski@gmail.com>
|Date:   Sun Jun 9 20:19:04 2019 +0200
|
|    dt-bindings: leds: Add properties for LED name construction
|
|    Introduce dedicated properties for conveying information about
|    LED function and color. Mark old "label" property as deprecated.
|
|    Additionally function-enumerator property is being provided
|    for the cases when neither function nor color can be used
|    for LED differentiation.

in order to be somewhat prepared, this patch adds a fallback
as a last resort to make the current led code work by falling
back to the node-name as the "label".

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2020-09-05 23:24:46 +02:00

96 lines
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#!/bin/sh
# 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() {
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=$(basename "$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
}