1 files changed, 59 insertions, 0 deletions
diff --git a/meta-facebook/meta-wedge100/recipes-core/fan-ctrl/fan-ctrl/get_fan_speed.sh b/meta-facebook/meta-wedge100/recipes-core/fan-ctrl/fan-ctrl/get_fan_speed.sh
new file mode 100755
index 0000000..042a72f
--- /dev/null
+++ b/meta-facebook/meta-wedge100/recipes-core/fan-ctrl/fan-ctrl/get_fan_speed.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+#
+# Copyright 2015-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: $0 [Fan Unit (1..5)]" >&2
+}
+
+FAN_DIR=/sys/class/i2c-adapter/i2c-8/8-0033
+
+show_pwm()
+{
+    pwm="${FAN_DIR}/fantray${1}_pwm"
+    val=$(cat $pwm | head -n 1)
+    echo "$((val * 100 / 31))%"
+}
+
+show_rpm()
+{
+    front_rpm="${FAN_DIR}/fan$((($1 * 2 - 1)))_input"
+    rear_rpm="${FAN_DIR}/fan$((($1 * 2)))_input"
+    echo "$(cat $front_rpm), $(cat $rear_rpm)"
+}
+
+set -e
+
+# refer to the comments in init_pwn.sh regarding
+# the fan unit and tacho mapping
+if [ "$#" -eq 0 ]; then
+    FANS="1 2 3 4 5"
+elif [ "$#" -eq 1 ]; then
+    if [ $1 -gt 5 ]; then
+        usage
+        exit 1
+    fi
+    FANS="$1"
+else
+    usage
+    exit 1
+fi
+
+for fan in $FANS; do
+    echo "Fan $fan RPMs: $(show_rpm $fan), ($(show_pwm $fan))"
+done