Initial commit

meta-ibm/recipes-phosphor/chassis/vrm-control/ibm-ac-server/ir35221-unbind-bind.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+# #########################################################
+# Script to run on witherspoon BMC to unbind/bind the ir35221
+# driver's devices
+
+status=0
+max_retries=3
+driver_path="/sys/bus/i2c/drivers/ir35221/"
+platform_path="/sys/devices/platform/ahb/ahb:apb/ahb:apb:bus@1e78a000/"
+
+unbind_driver () {
+    echo "$1" > $driver_path/unbind
+}
+
+bind_driver () {
+    device=$1
+    tries=0
+
+    until [ $tries -ge $max_retries ]; do
+        tries=$((tries+1))
+        ret=0
+        # shellcheck disable=SC2320
+        echo "$device" > $driver_path/bind || ret=$?
+        if [ $ret -ne 0 ]; then
+            echo "VRM $1 bind failed. Try $tries"
+            sleep 1
+        else
+            tries=$((max_retries+1))
+        fi
+    done
+
+    #Script will return a nonzero value if any binds fail.
+    if [ "$ret" -ne 0 ]; then
+        status=$ret
+    fi
+}
+
+if [ "$1" = "unbind" ]
+then
+    if [ -e $driver_path/4-0070 ]
+    then
+        unbind_driver "4-0070"
+    fi
+
+    if [ -e $driver_path/4-0071 ]
+    then
+        unbind_driver "4-0071"
+    fi
+
+    if [ -e $driver_path/5-0070 ]
+    then
+        unbind_driver "5-0070"
+    fi
+
+    if [ -e $driver_path/5-0071 ]
+    then
+        unbind_driver "5-0071"
+    fi
+elif [ "$1" = "bind" ]
+then
+    if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0070 ]
+    then
+        bind_driver "4-0070"
+    fi
+
+    if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0071 ]
+    then
+        bind_driver "4-0071"
+    fi
+
+    if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0070 ]
+    then
+        bind_driver "5-0070"
+    fi
+
+    if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0071 ]
+    then
+        bind_driver "5-0071"
+    fi
+fi
+
+exit "$status"