From: Christian Lamparter <chunkeey@googlemail.com>
Date: Tue, 30 Aug 2016 17:42:38 +0000 (+0200)
Subject: apm821xx: detect sd-card media changes for the WNDR4700
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=f7c1d9c8a551dea1dfe50cbac4d84f949191887d

apm821xx: detect sd-card media changes for the WNDR4700

The insertion or removal of the sd-card cannot be detected
by the hardware itself. This is by design. To workaround this,
for the WNDR4700 unload/load the dwc2 module in case the
the special SD CARD GPIO line is low/high.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
---

diff --git a/target/linux/apm821xx/base-files/etc/rc.button/BTN_1 b/target/linux/apm821xx/base-files/etc/rc.button/BTN_1
new file mode 100755
index 0000000000..995641237b
--- /dev/null
+++ b/target/linux/apm821xx/base-files/etc/rc.button/BTN_1
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+. /lib/functions.sh
+. /lib/apm821xx.sh
+
+BOARD=$(apm821xx_board_name)
+
+if [ $BOARD == "wndr4700" ]; then
+	case "$ACTION" in
+	released)
+		rmmod dwc2
+	;;
+	pressed)
+		modprobe dwc2
+	;;
+	esac
+fi
+
+return 0
diff --git a/target/linux/apm821xx/dts/wndr4700.dts b/target/linux/apm821xx/dts/wndr4700.dts
index 9a2ceb9d75..caaf05b3e8 100644
--- a/target/linux/apm821xx/dts/wndr4700.dts
+++ b/target/linux/apm821xx/dts/wndr4700.dts
@@ -432,7 +432,7 @@
 
 				sdcard {
 					label = "SDCard inserted";
-					gpios = <&GPIO0 7 0>;
+					gpios = <&GPIO0 7 1>;
 					linux,code = <0x101>; /* BTN_1 */
 				};
 			};