| 1 | #!/bin/bash |
| 2 | # SPDX-License-Identifier: GPL-2.0 |
| 3 | # |
| 4 | # Copyright (c) 2023 Collabora Ltd |
| 5 | # |
| 6 | # Based on Frank Rowand's dt_stat script. |
| 7 | # |
| 8 | # This script tests for devices that were declared on the Devicetree and are |
| 9 | # expected to bind to a driver, but didn't. |
| 10 | # |
| 11 | # To achieve this, two lists are used: |
| 12 | # * a list of the compatibles that can be matched by a Devicetree node |
| 13 | # * a list of compatibles that should be ignored |
| 14 | # |
| 15 | |
| 16 | DIR="$(dirname $(readlink -f "$0"))" |
| 17 | |
| 18 | source "${DIR}"/../kselftest/ktap_helpers.sh |
| 19 | |
| 20 | PDT=/proc/device-tree/ |
| 21 | COMPAT_LIST="${DIR}"/compatible_list |
| 22 | IGNORE_LIST="${DIR}"/compatible_ignore_list |
| 23 | |
| 24 | ktap_print_header |
| 25 | |
| 26 | if [[ ! -d "${PDT}" ]]; then |
| 27 | ktap_skip_all "${PDT} doesn't exist." |
| 28 | exit "${KSFT_SKIP}" |
| 29 | fi |
| 30 | |
| 31 | nodes_compatible=$( |
| 32 | for node in $(find ${PDT} -type d); do |
| 33 | [ ! -f "${node}"/compatible ] && continue |
| 34 | # Check if node is available |
| 35 | if [[ -e "${node}"/status ]]; then |
| 36 | status=$(tr -d '\000' < "${node}"/status) |
| 37 | [[ "${status}" != "okay" && "${status}" != "ok" ]] && continue |
| 38 | fi |
| 39 | echo "${node}" | sed -e 's|\/proc\/device-tree||' |
| 40 | done | sort |
| 41 | ) |
| 42 | |
| 43 | nodes_dev_bound=$( |
| 44 | IFS=$'\n' |
| 45 | for dev_dir in $(find /sys/devices -type d); do |
| 46 | [ ! -f "${dev_dir}"/uevent ] && continue |
| 47 | [ ! -d "${dev_dir}"/driver ] && continue |
| 48 | |
| 49 | grep '^OF_FULLNAME=' "${dev_dir}"/uevent | sed -e 's|OF_FULLNAME=||' |
| 50 | done |
| 51 | ) |
| 52 | |
| 53 | num_tests=$(echo ${nodes_compatible} | wc -w) |
| 54 | ktap_set_plan "${num_tests}" |
| 55 | |
| 56 | retval="${KSFT_PASS}" |
| 57 | for node in ${nodes_compatible}; do |
| 58 | if ! echo "${nodes_dev_bound}" | grep -E -q "(^| )${node}( |\$)"; then |
| 59 | compatibles=$(tr '\000' '\n' < "${PDT}"/"${node}"/compatible) |
| 60 | |
| 61 | for compatible in ${compatibles}; do |
| 62 | if grep -x -q "${compatible}" "${IGNORE_LIST}"; then |
| 63 | continue |
| 64 | fi |
| 65 | |
| 66 | if grep -x -q "${compatible}" "${COMPAT_LIST}"; then |
| 67 | ktap_test_fail "${node}" |
| 68 | retval="${KSFT_FAIL}" |
| 69 | continue 2 |
| 70 | fi |
| 71 | done |
| 72 | ktap_test_skip "${node}" |
| 73 | else |
| 74 | ktap_test_pass "${node}" |
| 75 | fi |
| 76 | |
| 77 | done |
| 78 | |
| 79 | ktap_print_totals |
| 80 | exit "${retval}" |