wowlan-udev: add udev rule to enable WoWLAN magic-packet

On some platforms (for example, QCx6490), XO (Crystal Oscillator) shutdown
is prevented by Wireless Processor Subsystem votes on interconnect
bandwidth and XO unless the WoWLAN magic-packet trigger is enabled. These
votes are released only after running:
  iw phy0 wowlan enable magic-packet

Add an udev rule to automatically enable WoWLAN magic-packet support when
a Wi-Fi PHY is registered. This rule is provided via a dedicated
wowlan-udev package and is not enabled by default.

Integrators should include this package only if their platform requires
automatic WoWLAN magic-packet enablement.

Signed-off-by: Miaoqing Pan <miaoqing.pan@oss.qualcomm.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 18 insertions, 0 deletions

diff --git a/meta-networking/recipes-connectivity/wowlan-udev/files/99-wowlan.rules b/meta-networking/recipes-connectivity/wowlan-udev/files/99-wowlan.rules
new file mode 100644
index 0000000000..ba41eef896
--- /dev/null
+++ b/meta-networking/recipes-connectivity/wowlan-udev/files/99-wowlan.rules
@@ -0,0 +1,4 @@
+# Enable WoWLAN when Wi-Fi PHY is registered
+ACTION=="add", SUBSYSTEM=="ieee80211", KERNEL=="phy*", \
+  RUN+="/usr/sbin/iw %k wowlan enable magic-packet"
+
diff --git a/meta-networking/recipes-connectivity/wowlan-udev/wowlan-udev.bb b/meta-networking/recipes-connectivity/wowlan-udev/wowlan-udev.bb
new file mode 100644
index 0000000000..857bbc3f95
--- /dev/null
+++ b/meta-networking/recipes-connectivity/wowlan-udev/wowlan-udev.bb
@@ -0,0 +1,14 @@
+SUMMARY = "Enable WoWLAN via udev on Wi-Fi PHY registration"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+SRC_URI = "file://99-wowlan.rules"
+
+do_install() {
+    install -d ${D}${sysconfdir}/udev/rules.d
+    install -m 0644 ${UNPACKDIR}/99-wowlan.rules \
+        ${D}${sysconfdir}/udev/rules.d/
+}
+
+INHIBIT_DEFAULT_DEPS = "1"
+RDEPENDS:${PN} = "iw udev"