1 files changed, 72 insertions, 0 deletions
diff --git a/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/vcs-control/zaius_vcs.sh b/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/vcs-control/zaius_vcs.sh
new file mode 100755
index 000000000..49bf0b04f
--- /dev/null
+++ b/meta-ingrasys/meta-zaius/recipes-phosphor/chassis/vcs-control/zaius_vcs.sh
@@ -0,0 +1,72 @@
+#!/bin/sh -e
+# Read and control VCS rails by sending the UCD power sequencer I2C commands.
+# This script assumes that the UCD is controlling VCS rails as GPIOs 5 and 6.
+# Also assumes that those GPIOs are already enabled.
+
+ucd_bus="0"
+ucd_addr="0x64"
+ucd_path="/sys/bus/i2c/drivers/ucd9000"
+ucd_driver="${ucd_bus}-00${ucd_addr#0x}"
+ucd_retries="5"
+
+retry()
+{
+    local i=0
+    until [ $i -ge $ucd_retries ]; do
+        i=$((i+1))
+        retry_output=`$@` && break
+    done
+    local ret=$?
+    if [ $i -eq $ucd_retries ]; then exit $ret; fi
+}
+
+# Usage: ucd_get address
+# Result stored in $ucd_reg
+ucd_get()
+{
+    retry i2cget -f -y $ucd_bus $ucd_addr $1 b
+    ucd_reg=$retry_output
+}
+
+# Usage: ucd_get address value
+ucd_set()
+{
+    retry i2cset -f -y $ucd_bus $ucd_addr $1 $2 b
+}
+
+vcs_set_gpios()
+{
+    echo -e "\tSetting UCD GPIO 5 to $1"
+    ucd_set 0xFA 5
+    ucd_set 0xFB $1
+    ucd_set 0xFB $1
+    echo -e "\tSetting UCD GPIO 6 to $1"
+    ucd_set 0xFA 6
+    ucd_set 0xFB $1
+    ucd_set 0xFB $1
+}
+
+vcs_get()
+{
+    echo Reading VCS settings
+    ucd_set 0xFA 5
+    ucd_get 0xFB
+    local val=`echo $ucd_reg | grep -i -c 0x0f`
+    echo -e "\tUCD GPIO 5 state=$val"
+    ucd_set 0xFA 6
+    ucd_get 0xFB
+    local val=`echo $ucd_reg | grep -i -c 0x0f`
+    echo -e "\tUCD GPIO 6 state=$val"
+}
+
+
+if [ "$1" == "on" ]; then
+    echo Turning on VCS
+    vcs_set_gpios 0x7
+elif [ "$1" == "off" ]; then
+    echo Turning off VCS
+    vcs_set_gpios 0x3
+else
+    vcs_get
+    echo "$0 <on|off>" to set state
+fi