[devices]: DellEMC [s5232]: PSU detection and default led state support (#3185)

*   [devices]: Add a new supported device DellEMC s5232f

    * Switch Vendor: DellEMC
    * Switch SKU: s5232F
    * ASIC Vendor: Broadcom
    * Swich ASIC: Trident3
    * Port Configuration: 32x100G
    * SONiC Image: sonic-broadcom.bin

    * LED support for s5232f
    * Changes Include ipmitool implementation for platform_sensors script is inclued in pmon startup
    * Added 100G,25G,10G configruation ( 100G is default).

* s5232[device] PSU detecttion and default led state support

device/dell/x86_64-dellemc_s5232f_c3538-r0/plugins/psuutil.py

@@ -7,11 +7,13 @@
 import os.path
 import logging
 import commands
+import sys
 
 
 S5232F_MAX_PSUS = 2
-IPMI_SENSOR_DATA = "docker exec -it pmon ipmitool sdr list"
-PSU_PRESENCE = "PSU{0}_state"
+IPMI_PSU_DATA = "docker exec -it pmon ipmitool sdr list"
+IPMI_PSU_DATA_DOCKER = "ipmitool sdr list"
+PSU_PRESENCE = "PSU{0}_stat"
 # Use this for older firmware
 # PSU_PRESENCE="PSU{0}_prsnt"
 ipmi_sdr_list = ""
@@ -29,14 +31,24 @@ class PsuUtil(PsuBase):
     def __init__(self):
         PsuBase.__init__(self)
 
+    def isDockerEnv(self):
+        num_docker = open('/proc/self/cgroup', 'r').read().count(":/docker")
+        if num_docker > 0:
+            return True
+        else:
+            return False
+
     # Fetch a BMC register
     def get_pmc_register(self, reg_name):
 
         status = 1
         global ipmi_sdr_list
         ipmi_dev_node = "/dev/pmi0"
+        ipmi_cmd = IPMI_PSU_DATA
+        dockerenv = self.isDockerEnv()
+        if dockerenv == True:
+            ipmi_cmd = IPMI_PSU_DATA_DOCKER
 
-        ipmi_cmd = IPMI_SENSOR_DATA
         status, ipmi_sdr_list = commands.getstatusoutput(ipmi_cmd)
 
         if status:
@@ -56,8 +68,6 @@ class PsuUtil(PsuBase):
         logging.basicConfig(level=logging.DEBUG)
         return output
 
-
-
     def get_num_psus(self):
         """
         Retrieves the number of PSUs available on the device
@@ -79,7 +89,6 @@ class PsuUtil(PsuBase):
         status = 1
         return status
 
-
     def get_psu_presence(self, index):
         """
         Retrieves the presence status of power supply unit (PSU) defined
@@ -92,6 +101,7 @@ class PsuUtil(PsuBase):
         psu_status = int(self.get_pmc_register(psu_reg_name), 16)
         if (psu_status != 'ERR'):
             # Check for PSU presence
-            if (psu_status):
+            if (psu_status == 0x00):
                     status = 1
         return status
+

platform/broadcom/sonic-platform-modules-dell/s5232f/scripts/s5232f_platform.sh

@@ -85,6 +85,12 @@ switch_board_modsel() {
 		python /usr/bin/pcisysfs.py --set --offset $hex --val 0x10 --res $resource  > /dev/null 2>&1
 	done
 }
+
+#This enables the led control for CPU and default states 
+switch_board_led_default() {
+	resource="/sys/bus/pci/devices/0000:04:00.0/resource0"
+	python /usr/bin/pcisysfs.py --set --offset 0x24 --val 0x194 --res $resource  > /dev/null 2>&1
+}
 init_devnum
 
 if [ "$1" == "init" ]; then
@@ -98,6 +104,7 @@ if [ "$1" == "init" ]; then
     switch_board_qsfp_mux "new_device"
     switch_board_qsfp "new_device"
     switch_board_modsel
+    switch_board_led_default
     python /usr/bin/qsfp_irq_enable.py
 
 elif [ "$1" == "deinit" ]; then