add uci led support

- /etc/config/system can hold led info which is applied at boot
- adds /sbin/led.sh to set/clear leds via a name defined in /etc/config/system

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12104 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/files/etc/init.d/led b/package/base-files/files/etc/init.d/led
new file mode 100755 (executable)
index 0000000..7ccb150
--- /dev/null
+++ b/package/base-files/files/etc/init.d/led
@@ -0,0 +1,45 @@
+#!/bin/sh /etc/rc.common
+# (C) 2008 openwrt.org
+
+. /etc/functions.sh
+
+START=60
+
+load_led() {
+       local name
+       local sysfs
+       local trigger
+       local dev
+       local mode
+       local default
+
+       config_get name $1 name
+       config_get sysfs $1 sysfs
+       config_get trigger $1 trigger
+       config_get dev $1 dev
+       config_get mode $1 mode
+       config_get default $1 default
+
+       [ -e /sys/class/leds/${sysfs}/brightness -a -n "$name" ] && {
+               logger "setting up led : $name"
+               [ -n "$default" ] && { 
+                       [ $default -eq 1 ] && 
+                               echo 1 >/sys/class/leds/${sysfs}/brightness \
+                               || echo 0 >/sys/class/leds/${sysfs}/brightness
+               }
+               [ -z "$trigger" ] && trigger=none
+               echo $trigger > /sys/class/leds/${sysfs}/trigger
+               [ "$trigger" == "netdev" -a -n "$dev" ] && {
+                       [ -z "$mode" ] && mode=link
+                       echo $dev > /sys/class/leds/${sysfs}/device_name
+                       echo $mode > /sys/class/leds/${sysfs}/mode
+               } 
+       }
+}
+
+start() {
+       [ -e /sys/class/leds/ ] && {
+               config_load system
+               config_foreach load_led led
+       }
+}

diff --git a/package/base-files/files/sbin/led.sh b/package/base-files/files/sbin/led.sh
new file mode 100755 (executable)
index 0000000..e4e92af
--- /dev/null
+++ b/package/base-files/files/sbin/led.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# (C) 2008 openwrt.org
+
+. /etc/functions.sh
+ACTION=$1
+NAME=$2
+do_led() {
+       local name
+       local sysfs
+       config_get name $1 name
+       config_get sysfs $1 sysfs
+       [ "$name" == "$NAME" -a -e "/sys/class/leds/${sysfs}" ] && {
+               [ "$ACTION" == "set" ] &&
+                       echo 1 >/sys/class/leds/${sysfs}/brightness \
+                       || echo 0 >/sys/class/leds/${sysfs}/brightness
+               exit 0
+       }
+}
+
+[ "$1" == "clear" -o "$1" == "set" ] &&
+       [ -n "$2" ] &&{
+               config_load system
+               config_foreach do_led
+               exit 1
+       }