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Lakka-LibreELEC/packages/sysutils/busybox/scripts/dump-active-edids-drm
Matthias Reichl a02a2e8b51 busybox: add script to dump edids of active DRM connectors
The script dumps all edids of currently active connectors to
.config/firmware/edid as edid-CONNECTORNAME.bin

When run with the "-q" option informative messages are disabled
and only the active connectors are returned so the output can
be easily used by other scripts.

Signed-off-by: Matthias Reichl <hias@horus.com>
2021-03-23 18:59:28 +01:00

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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2021-present Team LibreELEC (https://libreelec.tv)
EDID_DIR="/storage/.config/firmware/edid"
CONNECTORS=""
if [ "$1" = "-q" ]; then
VERBOSE=0
else
VERBOSE=1
fi
info() {
[ "${VERBOSE}" = "1" ] && echo "$@"
}
mkdir -p "${EDID_DIR}"
for c in /sys/class/drm/card?-* ; do
[ ! -d "$c" ] && continue
[ ! -e "$c/status" ] && continue
if [ $(cat $c/status 2>/dev/null) = "connected" ]; then
CONNECTOR=$(basename $c | cut -c 7-)
EDID_NAME="edid-${CONNECTOR}.bin"
cat $c/edid > "${EDID_DIR}/${EDID_NAME}" 2>/dev/null
if [ $? -eq 0 ]; then
[ -n "${CONNECTORS}" ] && CONNECTORS="${CONNECTORS} "
CONNECTORS="${CONNECTORS}${CONNECTOR}"
fi
fi
done
if [ -z "${CONNECTORS}" ]; then
info "error: no active connectors found"
exit 1
else
info "found active connector(s) ${CONNECTORS}"
[ "${VERBOSE}" = "0" ] && echo "${CONNECTORS}"
fi