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a422b171ac
For devices without a dedicated 'diag' LED, we use sometimes one of
other LEDs for indicating at least 'boot', 'failsafe' and 'upgrade'
stages. In some cases, at the same time these LEDs have defined default
triggers in DTS using 'linux,default-trigger' property. Current 'diag'
setup removes the trigger and turns off 'boot' LED after bootup.
One of the examples of such device is TP-Link TL-WR841N v14 (ramips)
which uses 'wlan' LED with defined 'linux,default-trigger' for 'diag':
aliases {
led-boot = &led_wlan;
led-failsafe = &led_wlan;
led-upgrade = &led_wlan;
};
[...]
led_wlan: wlan {
label = "tl-wr841n-v14:green:wlan";
gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
linux,default-trigger = "phy0tpt";
};
This patch extends 'diag.sh' and 'leds.sh' scripts to make sure default
trigger defined in DTS is restored for 'diag' LED which isn't used for
indicating 'running' stage.
Acked-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
95 lines
1.8 KiB
Bash
95 lines
1.8 KiB
Bash
#!/bin/sh
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# 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() {
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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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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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