From eb6459a233c5a3217244f0e911edc708364559b1 Mon Sep 17 00:00:00 2001 From: Krzysztof Nazarewski Date: Wed, 7 Feb 2024 11:26:36 +0100 Subject: [PATCH] linuxhw-edid-fetcher: init at unstable-2023-05-08 --- .../linuxhw-edid-fetch.sh | 96 +++++++++++++++++++ .../li/linuxhw-edid-fetcher/package.nix | 66 +++++++++++++ 2 files changed, 162 insertions(+) create mode 100755 pkgs/by-name/li/linuxhw-edid-fetcher/linuxhw-edid-fetch.sh create mode 100644 pkgs/by-name/li/linuxhw-edid-fetcher/package.nix diff --git a/pkgs/by-name/li/linuxhw-edid-fetcher/linuxhw-edid-fetch.sh b/pkgs/by-name/li/linuxhw-edid-fetcher/linuxhw-edid-fetch.sh new file mode 100755 index 000000000000..fa9925e3b3c8 --- /dev/null +++ b/pkgs/by-name/li/linuxhw-edid-fetcher/linuxhw-edid-fetch.sh @@ -0,0 +1,96 @@ +#!/usr/bin/env bash +set -eEuo pipefail +test -z "${DEBUG:-}" || set -x +# based on instructions provided in https://github.com/linuxhw/EDID/blob/98bc7d6e2c0eaad61346a8bf877b562fee16efc3/README.md + +usage() { + cat <&2 +Usage: + ${BASH_SOURCE[0]} PG278Q 2014 >edid.bin + repo=/path/to/linuxhw/EDID ${BASH_SOURCE[0]} PG278Q 2014 >edid.bin + +verify the generated file: + edid-decode /sys/kernel/debug/dri/0/DP-1/edid_override +EOF +} + +log() { + # shellcheck disable=SC2059 + printf "${1}\n" "${@:2}" >&2 +} + +find_displays() { + local script=("BEGIN { IGNORECASE=1 } /${1}/") + + for pattern in "${@:2}"; do + script+=('&&' "/${pattern}/") + done + cat "${repo}"/{Analog,Digital}Display.md | awk "${script[*]}" +} + +to_edid() { + if ! test -e "$1"; then + log "EDID specification file $1 does not exist," + log "it is most likely an error with https://github.com/linuxhw/EDID" + return 1 + fi + + log "Extracting $1..." + + # https://github.com/linuxhw/EDID/blob/228fea5d89782402dd7f84a459df7f5248573b10/README.md#L42-L42 + grep -E '^([a-f0-9]{32}|[a-f0-9 ]{47})$' <"$1" | tr -d '[:space:]' | xxd -r -p +} + +extract_link() { + awk '{ gsub(/^.+]\().+/, ""); print }' +} + +check_repo() { + test -d "$1" && test -f "$1/AnalogDisplay.md" && test -f "$1/DigitalDisplay.md" +} + +main() { + if [[ $# == 0 ]]; then + usage + exit 1 + fi + + : "${repo:="$PWD"}" + + if ! check_repo "$repo"; then + repo="${TMPDIR:-/tmp}/edid" + log "Not running inside 'https://github.com/linuxhw/EDID', downloading content to ${repo}" + if ! check_repo "$repo"; then + curl -L https://github.com/linuxhw/EDID/tarball/HEAD | tar -zx -C "${repo}" --strip-components=1 + fi + fi + + log "Using repository at ${repo}" + + readarray -t lines < <(find_displays "${@}") + case "${#lines[@]}" in + 0) + log "No matches, try broader patterns?" + exit 1 + ;; + 1) + log "Matched entries:" + log "> %s" "${lines[@]}" + log "Found exactly one pattern, continuing..." + ;; + *) + log "Matched entries:" + log "> %s" "${lines[@]}" + log "More than one match, make patterns more specific until there is only one left" + exit 2 + ;; + esac + + to_edid "${repo}/$(extract_link <<<"${lines[0]}")" +} + +main "$@" diff --git a/pkgs/by-name/li/linuxhw-edid-fetcher/package.nix b/pkgs/by-name/li/linuxhw-edid-fetcher/package.nix new file mode 100644 index 000000000000..8eb9a4d5b7ad --- /dev/null +++ b/pkgs/by-name/li/linuxhw-edid-fetcher/package.nix @@ -0,0 +1,66 @@ +{ lib +, coreutils +, curl +, fetchFromGitHub +, gawk +, gnutar +, stdenv +, unixtools +, writeShellApplication +, nix-update-script +, displays ? { } +}: + +# Usage: +# let +# edids = linuxhw-edid-fetcher.override { +# displays.PG278Q_2014 = [ "PG278Q" "2560x1440" "2014" ]; +# }; +# in +# "${edids}/lib/firmware/edid/PG278Q_2014.bin"; +stdenv.mkDerivation rec { + pname = "linuxhw-edid-fetcher"; + version = "unstable-2023-05-08"; + + src = fetchFromGitHub { + owner = "linuxhw"; + repo = "EDID"; + rev = "98bc7d6e2c0eaad61346a8bf877b562fee16efc3"; + hash = "sha256-+Vz5GU2gGv4QlKO4A6BlKSETxE5GAcehKZL7SEbglGE="; + }; + + fetch = lib.getExe (writeShellApplication { + name = "linuxhw-edid-fetch"; + runtimeInputs = [ gawk coreutils unixtools.xxd curl gnutar ]; + text = '' + repo="''${repo:-"${src}"}" + ${builtins.readFile ./linuxhw-edid-fetch.sh} + ''; + }); + + configurePhase = lib.pipe displays [ + (lib.mapAttrsToList (name: patterns: '' + "$fetch" ${lib.escapeShellArgs patterns} > "${name}.bin" + '')) + (builtins.concatStringsSep "\n") + ]; + + installPhase = '' + mkdir -p "$out/bin" + ln -s "$fetch" "$out/bin/" + ${lib.optionalString (displays != { }) '' + install -D --mode=444 --target-directory="$out/lib/firmware/edid" *.bin + ''} + ''; + + passthru.updateScript = nix-update-script { extraArgs = [ "--version=branch=master" ]; }; + + meta = { + description = "Fetcher for EDID binaries from Linux Hardware Project's EDID repository"; + homepage = "https://github.com/linuxhw/EDID"; + license = lib.licenses.cc-by-40; + maintainers = with lib.maintainers; [ nazarewk ]; + platforms = lib.platforms.all; + mainProgram = "linuxhw-edid-fetch"; + }; +}