From 1631af02545271cc0be707565ea19eb33dfa8aa6 Mon Sep 17 00:00:00 2001
From: juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 29 Aug 2012 10:11:55 +0000
Subject: 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
---
 .../base-files/etc/hotplug.d/net/10-ar922x-led-fix | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 target/linux/ar71xx/base-files/etc/hotplug.d/net/10-ar922x-led-fix

(limited to 'target/linux/ar71xx/base-files/etc/hotplug.d')

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
-- 
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