Add psuutil in S9180-32X

Signed-off-by: Wade He <chihen.he@gmail.com>

device/ingrasys/x86_64-ingrasys_s9180_32x-r0/plugins/psuutil.py

@@ -0,0 +1,90 @@
+#
+# psuutil.py
+# Platform-specific PSU status interface for SONiC
+#
+
+
+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"""
+
+    SYS_GPIO_DIR = "/sys/class/gpio/"
+
+    def __init__(self):
+        PsuBase.__init__(self)
+
+
+    # Get sysfs attribute
+    def get_attr_value(self, attr_path):
+
+        retval = 'ERR'
+        if (not os.path.isfile(attr_path)):
+            return retval
+
+        try:
+            with open(attr_path, 'r') as fd:
+                retval = fd.read()
+        except Exception as error:
+            logging.error("Unable to open ", attr_path, " file !")
+
+        retval = retval.rstrip('\r\n')
+        return retval
+
+    def get_num_psus(self):
+        """
+        Retrieves the number of PSUs available on the device
+        :return: An integer, the number of PSUs available on the device
+         """
+        MAX_PSUS = 2
+        return MAX_PSUS
+
+    def get_psu_status(self, index):
+        """
+        Retrieves the oprational status of power supply unit (PSU) defined
+                by index <index>
+        :param index: An integer, index of the PSU of which to query status
+        :return: Boolean, True if PSU is operating properly, False if PSU is\
+        faulty
+        """
+        status = 0
+        gpio_path = [ 'gpio99/value', 'gpio96/value' ]
+        attr_path = self.SYS_GPIO_DIR + gpio_path[index-1]
+
+        attr_value = self.get_attr_value(attr_path)
+
+        if (attr_value != 'ERR'):
+            attr_value = int(attr_value, 10)
+            # Check for PSU status
+            if (attr_value == 1):
+                    status = 1
+
+        return status
+
+    def get_psu_presence(self, index):
+        """
+        Retrieves the presence status of power supply unit (PSU) defined
+                by index <index>
+        :param index: An integer, index of the PSU of which to query status
+        :return: Boolean, True if PSU is plugged, False if not
+        """
+        status = 0
+        gpio_path = [ 'gpio100/value', 'gpio97/value' ]
+        attr_path = self.SYS_GPIO_DIR + gpio_path[index-1]
+
+        attr_value = self.get_attr_value(attr_path)
+
+        if (attr_value != 'ERR'):
+            attr_value = int(attr_value, 10)
+            # Check for PSU status
+            if (attr_value == 1):
+                    status = 1
+
+        return status
+

platform/barefoot/sonic-platform-modules-ingrasys

@@ -1 +1 @@
-Subproject commit 7e7470b03af88589df2056629f6832078ff02a56
+Subproject commit c165fddbb8da8bb11efc3c6952cb98949f2cdc87