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7606dac661
The 'label' property in led node has been deprecated and we'd better
to avoid using it. This patch allows us to extract DT OF LED name
from the newly introduced LED properties "color", "function" and
"function-enumerator".
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
(cherry picked from commit e814acc599)
126 lines
2.5 KiB
Bash
126 lines
2.5 KiB
Bash
# Copyright (C) 2013 OpenWrt.org
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get_dt_led_path() {
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local ledpath
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local basepath="/proc/device-tree"
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local nodepath="$basepath/aliases/led-$1"
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[ -f "$nodepath" ] && ledpath=$(cat "$nodepath")
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[ -n "$ledpath" ] && ledpath="$basepath$ledpath"
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echo "$ledpath"
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}
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get_dt_led_color_func() {
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local enum
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local func
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local idx
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local label
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[ -e "$1/function" ] && func=$(cat "$1/function")
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[ -e "$1/color" ] && idx=$((0x$(hexdump -n 4 -e '4/1 "%02x"' "$1/color")))
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[ -e "$1/function-enumerator" ] && \
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enum=$((0x$(hexdump -n 4 -e '4/1 "%02x"' "$1/function-enumerator")))
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[ -z "$idx" ] && [ -z "$func" ] && return 2
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if [ -n "$idx" ]; then
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for color in "white" "red" "green" "blue" "amber" \
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"violet" "yellow" "ir" "multicolor" "rgb" \
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"purple" "orange" "pink" "cyan" "lime"
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do
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[ $idx -eq 0 ] && label="$color" && break
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idx=$((idx-1))
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done
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fi
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label="$label:$func"
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[ -n "$enum" ] && label="$label-$enum"
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echo "$label"
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return 0
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}
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get_dt_led() {
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local label
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local ledpath=$(get_dt_led_path $1)
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[ -n "$ledpath" ] && \
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label=$(cat "$ledpath/label" 2>/dev/null) || \
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label=$(cat "$ledpath/chan-name" 2>/dev/null) || \
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label=$(get_dt_led_color_func "$ledpath") || \
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label=$(basename "$ledpath")
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echo "$label"
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}
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led_set_attr() {
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[ -f "/sys/class/leds/$1/$2" ] && echo "$3" > "/sys/class/leds/$1/$2"
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}
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led_timer() {
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led_set_attr $1 "trigger" "timer"
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led_set_attr $1 "delay_on" "$2"
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led_set_attr $1 "delay_off" "$3"
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}
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led_on() {
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led_set_attr $1 "trigger" "none"
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led_set_attr $1 "brightness" 255
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}
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led_off() {
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led_set_attr $1 "trigger" "none"
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led_set_attr $1 "brightness" 0
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}
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status_led_restore_trigger() {
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local trigger
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local ledpath=$(get_dt_led_path $1)
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[ -n "$ledpath" ] && \
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trigger=$(cat "$ledpath/linux,default-trigger" 2>/dev/null)
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[ -n "$trigger" ] && \
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led_set_attr "$(get_dt_led $1)" "trigger" "$trigger"
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}
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status_led_set_timer() {
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led_timer $status_led "$1" "$2"
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[ -n "$status_led2" ] && led_timer $status_led2 "$1" "$2"
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}
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status_led_set_heartbeat() {
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led_set_attr $status_led "trigger" "heartbeat"
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}
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status_led_on() {
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led_on $status_led
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[ -n "$status_led2" ] && led_on $status_led2
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}
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status_led_off() {
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led_off $status_led
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[ -n "$status_led2" ] && led_off $status_led2
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}
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status_led_blink_slow() {
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led_timer $status_led 1000 1000
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}
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status_led_blink_fast() {
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led_timer $status_led 100 100
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}
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status_led_blink_preinit() {
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led_timer $status_led 100 100
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}
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status_led_blink_failsafe() {
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led_timer $status_led 50 50
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}
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status_led_blink_preinit_regular() {
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led_timer $status_led 200 200
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}
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