[devices]: As7816 64x validate sfputil psuutil (#1466)

Author: roylee123

device/accton/x86_64-accton_as7816_64x-r0/plugins/psuutil.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+
+#############################################################################
+# Accton
+#
+# Module contains an implementation of SONiC PSU Base API and
+# provides the PSUs status which are available in the platform
+#
+#############################################################################
+
+import os.path
+
+try:
+    from sonic_psu.psu_base import PsuBase
+except ImportError as e:
+    raise ImportError (str(e) + "- required module not found")
+
+class PsuUtil(PsuBase):
+    """Platform-specific PSUutil class"""
+
+    def __init__(self):
+        PsuBase.__init__(self)
+
+        self.psu_path = "/sys/bus/i2c/devices/"
+        self.psu_presence = "/psu_present"
+        self.psu_oper_status = "/psu_power_good"
+        self.psu_mapping = {
+            1: "10-0053",
+            2: "9-0050",
+        }
+
+    def get_num_psus(self):
+        return len(self.psu_mapping)
+
+    def get_psu_status(self, index):
+        if index is None:
+            return False
+
+        status = 0
+        node = self.psu_path + self.psu_mapping[index]+self.psu_oper_status
+        try:
+            with open(node, 'r') as power_status:
+                status = int(power_status.read())
+        except IOError:
+            return False
+
+        return status == 1
+
+    def get_psu_presence(self, index):
+        if index is None:
+            return False
+
+        status = 0
+        node = self.psu_path + self.psu_mapping[index] + self.psu_presence
+        try:
+            with open(node, 'r') as presence_status:
+                status = int(presence_status.read())
+        except IOError:
+            return False
+
+        return status == 1

device/accton/x86_64-accton_as7816_64x-r0/plugins/sfputil.py

@@ -94,30 +94,26 @@ def reset(self, port_num):
         # Check for invalid port_num
         if port_num < self._port_start or port_num > self._port_end:
             return False
-
-        path = "/sys/bus/i2c/devices/{0}-0050/sfp_port_reset"
-        port_ps = path.format(self.port_to_i2c_mapping[port_num+1])
+	path = "/sys/bus/i2c/devices/19-0060/module_reset_{0}"
+        port_ps = path.format(port_num+1)
 
         try:
             reg_file = open(port_ps, 'w')
         except IOError as e:
             print "Error: unable to open file: %s" % str(e)
             return False
 
-        #toggle reset
+        #HW will clear reset after set.
         reg_file.seek(0)
         reg_file.write('1')
-        time.sleep(1)
-        reg_file.seek(0)
-        reg_file.write('0')
         reg_file.close()
         return True
 
     def set_low_power_mode(self, port_nuM, lpmode):
-        raise NotImplementedErro
+        raise NotImplementedError
 
     def get_low_power_mode(self, port_num):
-        raise NotImplementedErro
+        raise NotImplementedError
 
     def get_presence(self, port_num):
         # Check for invalid port_num