0340cf3b8b
* [platform/cel]: add fan present sysfs * [device/celestica]: move component device to chassis * [device/celestica]: add basic device api
132 lines
3.9 KiB
Python
132 lines
3.9 KiB
Python
#!/usr/bin/env python
|
|
|
|
#############################################################################
|
|
# Celestica
|
|
#
|
|
# Module contains an implementation of SONiC Platform Base API and
|
|
# provides the PSUs status which are available in the platform
|
|
#
|
|
#############################################################################
|
|
|
|
import os.path
|
|
import sonic_platform
|
|
|
|
try:
|
|
from sonic_platform_base.psu_base import PsuBase
|
|
from sonic_platform.fan import Fan
|
|
except ImportError as e:
|
|
raise ImportError(str(e) + "- required module not found")
|
|
|
|
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):
|
|
"""Platform-specific Psu class"""
|
|
|
|
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):
|
|
"""
|
|
Retrieves object representing the fan module contained in this PSU
|
|
Returns:
|
|
An object dervied from FanBase representing the fan module
|
|
contained in this PSU
|
|
"""
|
|
|
|
fan_speed_path = FAN_DX010_SPEED_PATH.format(
|
|
str(self.index+8))
|
|
try:
|
|
with open(fan_speed_path) as fan_speed_file:
|
|
fan_speed_rpm = int(fan_speed_file.read())
|
|
except IOError:
|
|
fan_speed = 0
|
|
|
|
fan_speed = float(fan_speed_rpm)/FAN_MAX_RPM * 100
|
|
fan = Fan(0)
|
|
fan.fan_speed = int(fan_speed) if int(fan_speed) <= 100 else 100
|
|
return fan
|
|
|
|
def set_status_led(self, color):
|
|
"""
|
|
Sets the state of the PSU status LED
|
|
Args:
|
|
color: A string representing the color with which to set the PSU status LED
|
|
Note: Only support green and off
|
|
Returns:
|
|
bool: True if status LED state is set successfully, False if not
|
|
"""
|
|
|
|
set_status_str = {
|
|
self.STATUS_LED_COLOR_GREEN: '1',
|
|
self.STATUS_LED_COLOR_OFF: '0'
|
|
}.get(color, None)
|
|
|
|
if not set_status_str:
|
|
return False
|
|
|
|
try:
|
|
with open(self.green_led_path, 'w') as file:
|
|
file.write(set_status_str)
|
|
except IOError:
|
|
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
|