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>
+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 $1)
get_dt_led() {
local label
local ledpath=$(get_dt_led_path $1)
[ -n "$ledpath" ] && \
label=$(cat "$ledpath/label" 2>/dev/null) || \
label=$(cat "$ledpath/chan-name" 2>/dev/null) || \
[ -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"
label=$(basename "$ledpath")
echo "$label"