1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3 4led_common_defs_path="include/dt-bindings/leds/common.h" 5 6num_args=$# 7if [ $num_args -eq 1 ]; then 8 linux_top=$(dirname `realpath $0` | awk -F/ \ 9 '{ \ 10 i=1; \ 11 while (i <= NF - 2) { \ 12 printf $i"/"; \ 13 i++; \ 14 }; \ 15 }') 16 led_defs_path=$linux_top/$led_common_defs_path 17elif [ $num_args -eq 2 ]; then 18 led_defs_path=`realpath $2` 19else 20 echo "Usage: get_led_device_info.sh LED_CDEV_PATH [LED_COMMON_DEFS_PATH]" 21 exit 1 22fi 23 24if [ ! -f $led_defs_path ]; then 25 echo "$led_defs_path doesn't exist" 26 exit 1 27fi 28 29led_cdev_path=`echo $1 | sed s'/\/$//'` 30 31ls "$led_cdev_path/brightness" > /dev/null 2>&1 32if [ $? -ne 0 ]; then 33 echo "Device \"$led_cdev_path\" does not exist." 34 exit 1 35fi 36 37bus=`readlink $led_cdev_path/device/subsystem | sed s'/.*\///'` 38usb_subdev=`readlink $led_cdev_path | grep usb | sed s'/\(.*usb[0-9]*\/[0-9]*-[0-9]*\)\/.*/\1/'` 39ls "$led_cdev_path/device/of_node/compatible" > /dev/null 2>&1 40of_node_missing=$? 41 42if [ "$bus" = "input" ]; then 43 input_node=`readlink $led_cdev_path/device | sed s'/.*\///'` 44 if [ ! -z "$usb_subdev" ]; then 45 bus="usb" 46 fi 47fi 48 49if [ "$bus" = "usb" ]; then 50 usb_interface=`readlink $led_cdev_path | sed s'/.*\(usb[0-9]*\)/\1/' | cut -d\/ -f3` 51 cd $led_cdev_path/../$usb_subdev 52 driver=`readlink $usb_interface/driver | sed s'/.*\///'` 53 if [ -d "$usb_interface/ieee80211" ]; then 54 wifi_phy=`ls -l $usb_interface/ieee80211 | grep phy | awk '{print $9}'` 55 fi 56 idVendor=`cat idVendor` 57 idProduct=`cat idProduct` 58 manufacturer=`cat manufacturer` 59 product=`cat product` 60elif [ "$bus" = "input" ]; then 61 cd $led_cdev_path 62 product=`cat device/name` 63 driver=`cat device/device/driver/description` 64elif [ $of_node_missing -eq 0 ]; then 65 cd $led_cdev_path 66 compatible=`cat device/of_node/compatible` 67 if [ "$compatible" = "gpio-leds" ]; then 68 driver="leds-gpio" 69 elif [ "$compatible" = "pwm-leds" ]; then 70 driver="leds-pwm" 71 else 72 manufacturer=`echo $compatible | awk -F, '{print $1}'` 73 product=`echo $compatible | awk -F, '{print $2}'` 74 fi 75else 76 echo "Unknown device type." 77 exit 1 78fi 79 80printf "\n#####################################\n" 81printf "# LED class device hardware details #\n" 82printf "#####################################\n\n" 83 84printf "bus:\t\t\t$bus\n" 85 86if [ ! -z "$idVendor" ]; then 87 printf "idVendor:\t\t$idVendor\n" 88fi 89 90if [ ! -z "$idProduct" ]; then 91 printf "idProduct:\t\t$idProduct\n" 92fi 93 94if [ ! -z "$manufacturer" ]; then 95 printf "manufacturer:\t\t$manufacturer\n" 96fi 97 98if [ ! -z "$product" ]; then 99 printf "product:\t\t$product\n" 100fi 101 102if [ ! -z "$driver" ]; then 103 printf "driver:\t\t\t$driver\n" 104fi 105 106if [ ! -z "$input_node" ]; then 107 printf "associated input node:\t$input_node\n" 108fi 109 110printf "\n####################################\n" 111printf "# LED class device name validation #\n" 112printf "####################################\n\n" 113 114led_name=`echo $led_cdev_path | sed s'/.*\///'` 115 116num_sections=`echo $led_name | awk -F: '{print NF}'` 117 118if [ $num_sections -eq 1 ]; then 119 printf "\":\" delimiter not detected.\t[ FAILED ]\n" 120 exit 1 121elif [ $num_sections -eq 2 ]; then 122 color=`echo $led_name | cut -d: -f1` 123 function=`echo $led_name | cut -d: -f2` 124elif [ $num_sections -eq 3 ]; then 125 devicename=`echo $led_name | cut -d: -f1` 126 color=`echo $led_name | cut -d: -f2` 127 function=`echo $led_name | cut -d: -f3` 128else 129 printf "Detected %d sections in the LED class device name - should the script be updated?\n" $num_sections 130 exit 1 131fi 132 133S_DEV="devicename" 134S_CLR="color " 135S_FUN="function " 136status_tab=20 137 138print_msg_ok() 139{ 140 local section_name="$1" 141 local section_val="$2" 142 local msg="$3" 143 printf "$section_name :\t%-${status_tab}.${status_tab}s %s %s\n" "$section_val" "[ OK ] " "$msg" 144} 145 146print_msg_failed() 147{ 148 local section_name="$1" 149 local section_val="$2" 150 local msg="$3" 151 printf "$section_name :\t%-${status_tab}.${status_tab}s %s %s\n" "$section_val" "[ FAILED ]" "$msg" 152} 153 154if [ ! -z "$input_node" ]; then 155 expected_devname=$input_node 156elif [ ! -z "$wifi_phy" ]; then 157 expected_devname=$wifi_phy 158fi 159 160if [ ! -z "$devicename" ]; then 161 if [ ! -z "$expected_devname" ]; then 162 if [ "$devicename" = "$expected_devname" ]; then 163 print_msg_ok "$S_DEV" "$devicename" 164 else 165 print_msg_failed "$S_DEV" "$devicename" "Expected: $expected_devname" 166 fi 167 else 168 if [ "$devicename" = "$manufacturer" ]; then 169 print_msg_failed "$S_DEV" "$devicename" "Redundant: use of vendor name is discouraged" 170 elif [ "$devicename" = "$product" ]; then 171 print_msg_failed "$S_DEV" "$devicename" "Redundant: use of product name is discouraged" 172 else 173 print_msg_failed "$S_DEV" "$devicename" "Unknown devicename - should the script be updated?" 174 fi 175 fi 176elif [ ! -z "$expected_devname" ]; then 177 print_msg_failed "$S_DEV" "blank" "Expected: $expected_devname" 178fi 179 180if [ ! -z "$color" ]; then 181 color_upper=`echo $color | tr [:lower:] [:upper:]` 182 color_id_definition=$(cat $led_defs_path | grep "_$color_upper\s" | awk '{print $2}') 183 if [ ! -z "$color_id_definition" ]; then 184 print_msg_ok "$S_CLR" "$color" "Matching definition: $color_id_definition" 185 else 186 print_msg_failed "$S_CLR" "$color" "Definition not found in $led_defs_path" 187 fi 188 189fi 190 191if [ ! -z "$function" ]; then 192 # strip optional enumerator 193 function=`echo $function | sed s'/\(.*\)-[0-9]*$/\1/'` 194 fun_definition=$(cat $led_defs_path | grep "\"$function\"" | awk '{print $2}') 195 if [ ! -z "$fun_definition" ]; then 196 print_msg_ok "$S_FUN" "$function" "Matching definition: $fun_definition" 197 else 198 print_msg_failed "$S_FUN" "$function" "Definition not found in $led_defs_path" 199 fi 200 201fi 202