From: Thomas Nixon <tom@tomn.co.uk>
Date: Sun, 2 Jul 2017 12:33:00 +0000 (+0100)
Subject: lantiq: set up DSL front-end GPIOs if they exist
X-Git-Tag: v18.06.0-rc1~2555
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=08cd5b769deb4833b7a20208fa15674f52023fea;p=openwrt%2Fstaging%2Fxback.git

lantiq: set up DSL front-end GPIOs if they exist

This is necessary for devices using the PSB80108/VRX220LD front-end
(currently only known on the Netgear DM200).

Signed-off-by: Thomas Nixon <tom@tomn.co.uk>
---

diff --git a/package/network/config/ltq-vdsl-app/files/dsl_control b/package/network/config/ltq-vdsl-app/files/dsl_control
index c659d50e1b..7406fe1c0c 100644
--- a/package/network/config/ltq-vdsl-app/files/dsl_control
+++ b/package/network/config/ltq-vdsl-app/files/dsl_control
@@ -225,6 +225,20 @@ start_service() {
 		;;
 	esac
 
+	local annexgpio="/sys/class/gpio/annex"
+	if [ -d "${annexgpio}a" ] && [ -d "${annexgpio}b" ]; then
+		case "${annex}" in
+			a*|l*|m*)
+				echo 1 > "${annexgpio}a/value"
+				echo 0 > "${annexgpio}b/value"
+				;;
+			b*|j*)
+				echo 0 > "${annexgpio}a/value"
+				echo 1 > "${annexgpio}b/value"
+				;;
+		esac
+	fi
+
 	if [ -z "${firmware}" ]; then
 		# search for the firmware provided by dsl-vrx200-firmware-xdsl-*
 		if grep -qE "system type.*: (VR9|xRX200)" /proc/cpuinfo; then