DellEMC: Z9332f platform API changes (sonic-net#8258)

Why I did it
platform test suite failed for few API's in DellEMC Z9332f platform.

How I did it
Modified the API's to return the expected values in the script.

How to verify it
Run platform test suite after making the changes.

platform/broadcom/sonic-platform-modules-dell/z9332f/sonic_platform/component.py

@@ -70,12 +70,12 @@ class Component(ComponentBase):
          ],
 
         ['Switch CPLD 1',
-         'Used for managing QSFP28/SFP port transceivers ',
+         'Used for managing QSFP-DD/QSFP28/SFP port transceivers ',
          get_cpld1_version
          ],
 
         ['Switch CPLD 2',
-         'Used for managing QSFP28/SFP port transceivers',
+         'Used for managing QSFP-DD/QSFP28/SFP port transceivers',
          get_cpld2_version
          ]
 

platform/broadcom/sonic-platform-modules-dell/z9332f/sonic_platform/sfp.py

@@ -1073,8 +1073,13 @@ def get_tx_bias(self):
         try:
             offset = QSFP_DD_PAGE17
             if self.sfp_type == 'QSFP_DD':
-                if self.qsfp_dd_DomInfo is None or not self.qsfp_dd_txbias_supported:
+                if self.qsfp_dd_DomInfo is None:
                     return None
+                if not self.qsfp_dd_txbias_supported:
+                    for lane in range(0, 8):
+                        tx_bias_list.append("N/A")
+                    return tx_bias_list
+
                 tx_bias_data_raw = self._read_eeprom_bytes(self.eeprom_path, offset + QSFP_DD_TXBIAS_OFFSET, QSFP_DD_TXBIAS_WIDTH)
                 tx_bias_data = self.qsfp_dd_DomInfo.parse_dom_tx_bias(tx_bias_data_raw, 0)
 
@@ -1093,8 +1098,6 @@ def get_tx_bias(self):
                 if tx_bias_data is not None:
                     tx1_bias = self._strip_unit_from_str(tx_bias_data['data']['TXBias']['value'])
                     tx_bias_list.append(tx1_bias)
-                else:
-                    tx_bias_list.append(0.0)
 
         except (TypeError, ValueError):
             return None
@@ -1107,8 +1110,12 @@ def get_rx_power(self):
         rx_power_list = []
         try:
             if self.sfp_type == 'QSFP_DD':
-                if self.qsfp_dd_DomInfo is None or not self.qsfp_dd_rxpower_supported:
+                if self.qsfp_dd_DomInfo is None:
                     return None
+                if not self.qsfp_dd_rxpower_supported:
+                    for lane in range(0, 8):
+                        rx_power_list.append("N/A")
+                    return rx_power_list
 
                 offset = QSFP_DD_PAGE17
                 rx_power_data_raw = self._read_eeprom_bytes(self.eeprom_path, offset + QSFP_DD_RXPOWER_OFFSET, QSFP_DD_TXPOWER_WIDTH)
@@ -1128,9 +1135,7 @@ def get_rx_power(self):
                 rx_power_data = self._get_eeprom_data('ChannelMonitor')
                 if rx_power_data is not None:
                      rx1_pw = self._strip_unit_from_str(rx_power_data['data']['RXPower']['value'])
-                else:
-                     rx1_pw = 0.0
-                rx_power_list.append(rx1_pw)
+                     rx_power_list.append(rx1_pw)
         except (TypeError, ValueError):
             return None
         return rx_power_list
@@ -1142,8 +1147,12 @@ def get_tx_power(self):
         tx_power_list = []
         try:
             if self.sfp_type == 'QSFP_DD':
-                if self.qsfp_dd_DomInfo is None or not self.qsfp_dd_txpower_supported:
+                if self.qsfp_dd_DomInfo is None:
                     return None
+                if not self.qsfp_dd_txpower_supported:
+                    for lane in range(0, 8):
+                        tx_power_list.append("N/A")
+                    return tx_power_list
 
                 offset = QSFP_DD_PAGE17
                 tx_power_data_raw = self._read_eeprom_bytes(self.eeprom_path, offset + QSFP_DD_TXPOWER_OFFSET,
@@ -1177,9 +1186,7 @@ def get_tx_power(self):
                 channel_monitor_data = self._get_eeprom_data('ChannelMonitor')
                 if channel_monitor_data is not None:
                     tx1_pw = self._strip_unit_from_str(channel_monitor_data['data']['TXPower']['value'])
-                else:
-                    tx1_pw = 0.0
-                tx_power_list.append(tx1_pw)
+                    tx_power_list.append(tx1_pw)
         except (TypeError, ValueError):
             return None
         return tx_power_list
@@ -1212,6 +1219,8 @@ def reset(self):
 
                 # Convert our register value back to a hex string and write back
                 self.pci_set_value(self.BASE_RES_PATH, reg_value, port_offset)
+            else:
+                return False
         except  ValueError:
             return  False
         return True