ar71xx: Buffalo WZR-HP-AG300H LED support

An improved LED support for Buffalo WZR-HP-AG300H.

There will be two new packages to go with this patch
(ar922x-led-fix-hotplug and ar922x-led-fix-init).
These packages essentially perform the same task of
disabling "JTAG over GPIO pins" function which is
currently required for LEDs on AR922x emac GPIO to work,
and are both considered a temporary fix that circumvent
this problem.

[juhosg: add the hotplug script from the proposed
ar922x-led-fix-hotplug package to ar71xx/base-files]

Signed-off-by: Yoichi Shinoda <shinoda@jaist.ac.jp>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33294 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 58 insertions, 0 deletions

diff --git a/target/linux/ar71xx/base-files/etc/diag.sh b/target/linux/ar71xx/base-files/etc/diag.sh
index 6759cf043..420d69024 100755
--- a/target/linux/ar71xx/base-files/etc/diag.sh
+++ b/target/linux/ar71xx/base-files/etc/diag.sh
@@ -150,6 +150,7 @@ get_status_led() {
 	wlae-ag300n)
 		status_led="buffalo:green:status"
 		;;
+	wzr-hp-ag300h | \
 	wzr-hp-g300nh2)
 		status_led="buffalo:red:diag"
 		;;
diff --git a/target/linux/ar71xx/base-files/etc/hotplug.d/net/10-ar922x-led-fix b/target/linux/ar71xx/base-files/etc/hotplug.d/net/10-ar922x-led-fix
new file mode 100644
index 000000000..102415009
--- /dev/null
+++ b/target/linux/ar71xx/base-files/etc/hotplug.d/net/10-ar922x-led-fix
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# For AR9220 and AR9223, GPIO JTAG must explicit be disabled
+# before LEDs start working. Do this when wifi device is
+# detected.
+
+#
+# $DEVPATH is not valid for some boards (including WZR-HP-AG300H).
+# Manipulate the $DEVPATH to reach the corresponding phyN.
+#
+
+devdir=`dirname $DEVPATH`
+devdir=`dirname $devdir`
+phydir=/sys$devdir/ieee80211
+phyname=`cat $phydir/phy*/name`
+
+if [ -z $phyname -o $ACTION != "add" ]; then exit 0; fi
+
+#
+# ar922x_disable_gpio_jtag():
+#
+# Emulate
+#       REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
+# for AR9220 and AR9223.
+#
+
+ar922x_disable_gpio_jtag()                 
+{                                          
+        local regidx=0x4054               
+        
+	[ -f /sys/kernel/debug/ieee80211/$1/ath9k/regidx ] && {
+		echo $regidx > /sys/kernel/debug/ieee80211/$1/ath9k/regidx
+        	regval=`cat /sys/kernel/debug/ieee80211/$1/ath9k/regval`
+        	regval=$((regval | 0x20000))
+        	echo regval $regval
+    		echo $regval > /sys/kernel/debug/ieee80211/$1/ath9k/regval
+        }
+}
+
+if [ $phyname -a $ACTION = "add" ]; then
+
+	. /lib/ar71xx.sh
+	
+	case $(ar71xx_board_name) in
+		wzr-hp-ag300h)
+			ar922x_disable_gpio_jtag $phyname
+			;;
+	esac;
+fi
+
+exit 0
diff --git a/target/linux/ar71xx/base-files/etc/uci-defaults/leds b/target/linux/ar71xx/base-files/etc/uci-defaults/leds
index 5e2548e52..0082ffe89 100755
--- a/target/linux/ar71xx/base-files/etc/uci-defaults/leds
+++ b/target/linux/ar71xx/base-files/etc/uci-defaults/leds
@@ -165,6 +165,12 @@ wlae-ag300n)
 	ucidef_set_led_netdev "wireless" "WIRELESS" "buffalo:green:wireless" "wlan0"
 	;;
 
+wzr-hp-ag300h)
+	ucidef_set_led_default "diag" "DIAG" "buffalo:red:diag" "0"
+	ucidef_set_led_netdev "router" "ROUTER" "buffalo:green:router" "eth1"
+	ucidef_set_led_usbdev "usb" "USB" "buffalo:green:usb" "1-1"
+	;;
+
 wzr-hp-g300nh)
 	ucidef_set_led_wlan "wlan" "Wireless" "buffalo:green:wireless" "phy0tpt"
 	ucidef_set_led_netdev "router" "Router" "buffalo:green:router" "eth1"