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+#!/bin/bash
+#
+# Copyright 2014-present Facebook. All Rights Reserved.
+#
+# This program file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program in a file named COPYING; if not, write to the
+# Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301 USA
+#
+
+usage() {
+ echo "Usage: $1 <on | off>"
+ exit -1
+}
+
+. /usr/local/fbpackages/utils/ast-functions
+
+PATH=/sbin:/bin:/usr/sbin:/usr/bin
+
+set -e
+
+if [ $# != 1 ]; then
+ usage $0
+fi
+
+if [ $1 = "on" ]; then
+ val=1
+elif [ $1 = "off" ]; then
+ val=0
+else
+ usage $0
+fi
+
+# To use GPIOE5 (37), SCU80[21], SCU8C[14], and SCU70[22] must be 0
+devmem_clear_bit $(scu_addr 80) 21
+devmem_clear_bit $(scu_addr 8C) 14
+devmem_clear_bit $(scu_addr 70) 22
+
+gpio_set 37 $val
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