1 files changed, 59 insertions, 0 deletions
diff --git a/meta-facebook/meta-wedge/recipes-wedge/fan-ctrl/fan-ctrl/get_fan_speed.sh b/meta-facebook/meta-wedge/recipes-wedge/fan-ctrl/fan-ctrl/get_fan_speed.sh
new file mode 100755
index 0000000..4e36a7c
--- /dev/null
+++ b/meta-facebook/meta-wedge/recipes-wedge/fan-ctrl/fan-ctrl/get_fan_speed.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+#
+# Copyright 2004-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: $0 [Fan Unit (0..3)]" >&2
+}
+
+PWM_DIR=/sys/devices/platform/ast_pwm_tacho.0
+set -e
+
+# refer to the comments in init_pwn.sh regarding
+# the fan unit and tacho mapping
+if [ "$#" -eq 0 ]; then
+    TACHOS="0:3 1:2 2:0 3:1"
+elif [ "$#" -eq 1 ]; then
+    case "$1" in
+    "0")
+        TACHOS="0:3"
+        ;;
+    "1")
+        TACHOS="1:2"
+        ;;
+    "2")
+        TACHOS="2:0"
+        ;;
+    "3")
+        TACHOS="3:1"
+        ;;
+    *)
+        usage
+        exit 1
+        ;;
+    esac
+else
+    usage
+    exit 1
+fi
+
+for fan_tacho in $TACHOS; do
+    fan=${fan_tacho%%:*}
+    tacho=${fan_tacho##*:}
+    echo "Fan $fan RPMs:    $(cat $PWM_DIR/tacho${tacho}_rpm), $(cat $PWM_DIR/tacho$((tacho+4))_rpm)"
+done