[device/celestica]: Implement device base APIs for Fan/PSU API based …

…on the new platform API (#3163)

* [platform/cel]: add fan present sysfs

* [device/celestica]: move component device to chassis

* [device/celestica]: add basic device api

device/celestica/x86_64-cel_e1031-r0/sonic_platform/chassis.py

@@ -18,17 +18,17 @@
     from sonic_platform_base.chassis_base import ChassisBase
     from sonic_platform.fan import Fan
     from sonic_platform.psu import Psu
-    from sonic_platform.device import Device
     from sonic_platform.component import Component
     from sonic_platform.watchdog import Watchdog
 except ImportError as e:
     raise ImportError(str(e) + "- required module not found")
 
-CONFIG_DB_PATH = "/etc/sonic/config_db.json"
 NUM_FAN = 3
 NUM_PSU = 2
+CONFIG_DB_PATH = "/etc/sonic/config_db.json"
 RESET_REGISTER = "0x112"
 REBOOT_CAUSE_PATH = "/host/reboot-cause/previous-reboot-cause.txt"
+COMPONENT_NAME_LIST = ["SMC_CPLD", "MMC_CPLD", "BIOS"]
 
 
 class Chassis(ChassisBase):
@@ -43,8 +43,7 @@ def __init__(self):
             psu = Psu(index)
             self._psu_list.append(psu)
         ChassisBase.__init__(self)
-        self._component_device = Device("component")
-        self._component_name_list = self._component_device.get_name_list()
+        self._component_name_list = COMPONENT_NAME_LIST
         self._watchdog = Watchdog()
 
     def __read_config_db(self):

device/celestica/x86_64-cel_e1031-r0/sonic_platform/fan.py

@@ -24,6 +24,7 @@
 EMC2305_FAN_PWM = "pwm{}"
 EMC2305_FAN_TARGET = "fan{}_target"
 EMC2305_FAN_INPUT = "pwm{}"
+FAN_NAME_LIST = ["FAN-1", "FAN-2", "FAN-3"]
 
 
 class Fan(FanBase):
@@ -43,8 +44,7 @@ def __init__(self, fan_index):
                 'index_map': [1, 2, 4]
             }
         ]
-
-        # TODO: Add fan presence status in sysfs
+
         self.fan_e1031_presence = "fan{}_prs"
         self.fan_e1031_direction = "fan{}_dir"
         self.fan_e1031_led = "fan{}_led"
@@ -181,3 +181,28 @@ def set_status_led(self, color):
             return False
 
         return True
+
+    def get_name(self):
+        """
+        Retrieves the name of the device
+            Returns:
+            string: The name of the device
+        """
+        return FAN_NAME_LIST[self.index]
+
+    def get_presence(self):
+        """
+        Retrieves the presence of the PSU
+        Returns:
+            bool: True if PSU is present, False if not
+        """
+
+        try:
+            fan_direction_file = (FAN_PATH +
+                                  self.fan_e1031_presence.format(self.index+1))
+            with open(fan_direction_file, 'r') as file:
+                present = int(file.read().strip('\r\n'))
+        except IOError:
+            return False
+
+        return present == 0

device/celestica/x86_64-cel_e1031-r0/sonic_platform/psu.py

@@ -19,6 +19,7 @@
 
 FAN_E1031_SPEED_PATH = "/sys/class/hwmon/hwmon{}/fan1_input"
 FAN_MAX_RPM = 11000
+PSU_NAME_LIST = ["PSU-R", "PSU-L"]
 
 
 class Psu(PsuBase):
@@ -27,6 +28,9 @@ class Psu(PsuBase):
     def __init__(self, psu_index):
         PsuBase.__init__(self)
         self.index = psu_index
+        self.psu_path = "/sys/devices/platform/e1031.smc/"
+        self.psu_presence = "psu{}_prs"
+        self.psu_oper_status = "psu{}_status"
 
     def get_fan(self):
         """
@@ -59,3 +63,43 @@ def set_status_led(self, color):
         """
         # Hardware not supported
         return False
+
+    def get_name(self):
+        """
+        Retrieves the name of the device
+            Returns:
+            string: The name of the device
+        """
+        return PSU_NAME_LIST[self.index]
+
+    def get_presence(self):
+        """
+        Retrieves the presence of the PSU
+        Returns:
+            bool: True if PSU is present, False if not
+        """
+        psu_location = ["R", "L"]
+        status = 0
+        try:
+            with open(self.psu_path + self.psu_presence.format(psu_location[self.index]), 'r') as psu_prs:
+                status = int(psu_prs.read())
+        except IOError:
+            return False
+
+        return status == 1
+
+    def get_status(self):
+        """
+        Retrieves the operational status of the device
+        Returns:
+            A boolean value, True if device is operating properly, False if not
+        """
+        psu_location = ["R", "L"]
+        status = 0
+        try:
+            with open(self.psu_path + self.psu_oper_status.format(psu_location[self.index]), 'r') as power_status:
+                status = int(power_status.read())
+        except IOError:
+            return False
+
+        return status == 1

device/celestica/x86_64-cel_seastone-r0/sonic_platform/chassis.py

@@ -18,7 +18,6 @@
     from sonic_platform_base.chassis_base import ChassisBase
     from sonic_platform.fan import Fan
     from sonic_platform.psu import Psu
-    from sonic_platform.device import Device
     from sonic_platform.component import Component
     from sonic_platform.watchdog import Watchdog
 except ImportError as e:
@@ -29,6 +28,7 @@
 NUM_PSU = 2
 RESET_REGISTER = "0x103"
 REBOOT_CAUSE_PATH = "/host/reboot-cause/previous-reboot-cause.txt"
+COMPONENT_NAME_LIST = ["CPLD1", "CPLD2", "CPLD3", "CPLD4", "BIOS"]
 
 
 class Chassis(ChassisBase):
@@ -43,8 +43,7 @@ def __init__(self):
             psu = Psu(index)
             self._psu_list.append(psu)
         ChassisBase.__init__(self)
-        self._component_device = Device("component")
-        self._component_name_list = self._component_device.get_name_list()
+        self._component_name_list = COMPONENT_NAME_LIST
         self._watchdog = Watchdog()
 
     def __read_config_db(self):

device/celestica/x86_64-cel_seastone-r0/sonic_platform/fan.py

@@ -24,6 +24,7 @@
 EMC2305_FAN_PWM = "pwm{}"
 EMC2305_FAN_TARGET = "fan{}_target"
 EMC2305_FAN_INPUT = "pwm{}"
+FAN_NAME_LIST = ["FAN-1", "FAN-2", "FAN-3", "FAN-4", "FAN-5"]
 
 
 class Fan(FanBase):
@@ -226,3 +227,21 @@ def set_status_led(self, color):
             return False
 
         return True
+
+    def get_name(self):
+        """
+        Retrieves the name of the device
+            Returns:
+            string: The name of the device
+        """
+        return FAN_NAME_LIST[self.index]
+
+    def get_presence(self):
+        """
+        Retrieves the presence of the PSU
+        Returns:
+            bool: True if PSU is present, False if not
+        """
+        raw = self.get_gpio_value(self.dx010_fan_gpio[self.index+1]['prs'])
+
+        return int(raw, 10) == 0

device/celestica/x86_64-cel_seastone-r0/sonic_platform/psu.py

@@ -20,6 +20,8 @@
 FAN_DX010_SPEED_PATH = "/sys/class/hwmon/hwmon{}/fan1_input"
 GREEN_LED_PATH = "/sys/devices/platform/leds_dx010/leds/dx010:green:p-{}/brightness"
 FAN_MAX_RPM = 11000
+SYS_GPIO_DIR = "/sys/class/gpio"
+PSU_NAME_LIST = ["PSU-1", "PSU-2"]
 
 
 class Psu(PsuBase):
@@ -29,6 +31,31 @@ def __init__(self, psu_index):
         PsuBase.__init__(self)
         self.index = psu_index
         self.green_led_path = GREEN_LED_PATH.format(self.index+1)
+        self.dx010_psu_gpio = [
+            {'base': self.get_gpio_base()},
+            {'prs': 27, 'status': 22},
+            {'prs': 28, 'status': 25}
+        ]
+
+    def get_gpio_base(self):
+        for r in os.listdir(SYS_GPIO_DIR):
+            if "gpiochip" in r:
+                return int(r[8:], 10)
+        return 216  # Reserve
+
+    def get_gpio_value(self, pinnum):
+        gpio_base = self.dx010_psu_gpio[0]['base']
+        gpio_file = "{}/gpio{}/value".format(SYS_GPIO_DIR,
+                                             str(gpio_base+pinnum))
+
+        try:
+            with open(gpio_file, 'r') as fd:
+                retval = fd.read()
+        except IOError:
+            raise IOError("Unable to open " + gpio_file + "file !")
+
+        retval = retval.rstrip('\r\n')
+        return retval
 
     def get_fan(self):
         """
@@ -76,3 +103,29 @@ def set_status_led(self, color):
             return False
 
         return True
+
+    def get_name(self):
+        """
+        Retrieves the name of the device
+            Returns:
+            string: The name of the device
+        """
+        return PSU_NAME_LIST[self.index]
+
+    def get_presence(self):
+        """
+        Retrieves the presence of the PSU
+        Returns:
+            bool: True if PSU is present, False if not
+        """
+        raw = self.get_gpio_value(self.dx010_psu_gpio[self.index+1]['prs'])
+        return int(raw, 10) == 0
+
+    def get_status(self):
+        """
+        Retrieves the operational status of the device
+        Returns:
+            A boolean value, True if device is operating properly, False if not
+        """
+        raw = self.get_gpio_value(self.dx010_psu_gpio[self.index+1]['status'])
+        return int(raw, 10) == 1