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kernel-module-nxp-wlan: add watch-regdomain service 

Add service to automatically detect changes in the global regulatory
domain and force a PHY regulatory domain change.

This allows detecting regulatory domain changes based on beacon
information when 802.11d is enabled and instructing the wireless
driver to download the rgpower firmware file corresponding to the
selected country.

If the selected country is not one of the supported ones, Worldwide
rgpower_WW.bin file will be downloaded by default.

Run the check service every 5 seconds through a systemd timer.

https://onedigi.atlassian.net/browse/DEL-8974

Signed-off-by: Gonzalo Ruiz <Gonzalo.Ruiz@digi.com>
This commit is contained in:
Gonzalo Ruiz 2025-06-30 11:32:54 +02:00
parent 5001419caf
commit b55f64207a
4 changed files with 47 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
meta-digi-arm/dynamic-layers/freescale-layer/recipes-kernel/kernel-modules/kernel-module-nxp-wlan/watch-regdomain.service Normal file
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@ -0,0 +1,7 @@
[Unit]
Description=Monitor for global regulatory domain changes
After=network.target
[Service]
Type=oneshot
ExecStart=/usr/sbin/watch_regdomain.sh

11
meta-digi-arm/dynamic-layers/freescale-layer/recipes-kernel/kernel-modules/kernel-module-nxp-wlan/watch-regdomain.timer Normal file
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@ -0,0 +1,11 @@
[Unit]
Description=Check regdomain every 5 seconds
[Timer]
OnBootSec=5sec
OnUnitInactiveSec=5sec
AccuracySec=1s
Unit=watch-regdomain.service
[Install]
WantedBy=timers.target

14
meta-digi-arm/dynamic-layers/freescale-layer/recipes-kernel/kernel-modules/kernel-module-nxp-wlan/watch_regdomain.sh Executable file
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@ -0,0 +1,14 @@
#!/bin/sh
REGDOMAIN_FILE="/var/run/regdomain"
previous=$(cat "${REGDOMAIN_FILE}" 2>/dev/null)
# Extract the 'global' regulatory domain
current=$(iw reg get | grep -m1 '^country' | cut -d' ' -f2 | tr -d ':')
if [ -n "${current}" ] && [ "${current}" != "${previous}" ]; then
echo "Global regulatory domain changed to '${current}'"
echo "${current}" > "${REGDOMAIN_FILE}"
iw reg set ${current}
fi

15
meta-digi-arm/dynamic-layers/freescale-layer/recipes-kernel/kernel-modules/kernel-module-nxp-wlan_git.bbappend
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@ -5,6 +5,9 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/${BPN}:"
SRC_URI:append = " \
file://81-iw612-wifi.rules \
file://load_iw612.sh \
file://watch_regdomain.sh \
file://watch-regdomain.service \
file://watch-regdomain.timer \
"
do_install:append () {
@ -12,11 +15,23 @@ do_install:append () {
install -m 0644 ${WORKDIR}/81-iw612-wifi.rules ${D}${sysconfdir}/udev/rules.d/
install -d ${D}${sysconfdir}/udev/scripts
install -m 0777 ${WORKDIR}/load_iw612.sh ${D}${sysconfdir}/udev/scripts/
if ${@bb.utils.contains('DISTRO_FEATURES','systemd','true','false',d)}; then
install -d ${D}${systemd_system_unitdir}
install -m 0644 ${WORKDIR}/watch-regdomain.service ${D}${systemd_system_unitdir}/watch-regdomain.service
install -m 0644 ${WORKDIR}/watch-regdomain.timer ${D}${systemd_system_unitdir}/watch-regdomain.timer
fi
install -d ${D}${sbindir}
install -m 0755 ${WORKDIR}/watch_regdomain.sh ${D}${sbindir}/
}
FILES:${PN}:append = " \
${sysconfdir}/udev/rules.d \
${sysconfdir}/udev/scripts \
${sbindir}/watch_regdomain.sh \
${systemd_system_unitdir}/watch-regdomain.service \
${systemd_system_unitdir}/watch-regdomain.timer \
"
RDEPENDS:${PN}:append = " firmware-murata-nxp"