126 lines
4.4 KiB
Python
126 lines
4.4 KiB
Python
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#
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# led_control.py
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#
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# Platform-specific LED control functionality for SONiC
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#
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try:
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from sonic_led.led_control_base import LedControlBase
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import os
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import time
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import syslog
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import sonic_platform.platform
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import sonic_platform.chassis
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except ImportError as e:
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raise ImportError(str(e) + " - required module not found")
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smbus_present = 1
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try:
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import smbus
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except ImportError as e:
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smbus_present = 0
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def DBG_PRINT(str):
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syslog.openlog("nokia-led")
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syslog.syslog(syslog.LOG_INFO, str)
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syslog.closelog()
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class LedControl(LedControlBase):
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"""Platform specific LED control class"""
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# Constructor
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def __init__(self):
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self.chassis = sonic_platform.platform.Platform().get_chassis()
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self._initDefaultConfig()
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def _initDefaultConfig(self):
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# For the D1 box the port leds are controlled by Trident3 LED program
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# The fan tray leds will be managed with the new thermalctl daemon / chassis class based API
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# leaving only the system leds to be done old style
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DBG_PRINT("starting system leds")
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self._initSystemLed()
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DBG_PRINT(" led done")
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def _set_i2c_register(self, reg_file, value):
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# On successful write, the value read will be written on
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# reg_name and on failure returns 'ERR'
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rv = 'ERR'
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if (not os.path.isfile(reg_file)):
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return rv
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try:
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with open(reg_file, 'w') as fd:
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rv = fd.write(str(value))
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except Exception as e:
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rv = 'ERR'
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return rv
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def _initSystemLed(self):
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# Front Panel System LEDs setting
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oldfan = 0xf
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oldpsu = 0xf
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# Write sys led
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if smbus_present == 0:
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DBG_PRINT(" PMON LED SET ERROR -> smbus present = 0 ")
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else:
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bus = smbus.SMBus(0)
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DEVICE_ADDRESS = 0x41
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DEVICEREG = 0x7
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bus.write_byte_data(DEVICE_ADDRESS, DEVICEREG, 0x02)
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DBG_PRINT(" System LED set O.K. ")
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while True:
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# Front Panel FAN Panel LED setting in register 0x08
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if (self.chassis.get_fan(0).get_status() == self.chassis.get_fan(1).get_status() == True):
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if oldfan != 0x1:
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if (os.path.isfile("/sys/class/gpio/fanLedAmber/value")):
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self._set_i2c_register("/sys/class/gpio/fanLedAmber/value", 0)
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self._set_i2c_register("/sys/class/gpio/fanLedGreen/value", 1)
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oldfan = 0x1
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else:
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if oldfan != 0x0:
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if (os.path.isfile("/sys/class/gpio/fanLedGreen/value")):
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self._set_i2c_register("/sys/class/gpio/fanLedGreen/value", 0)
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self._set_i2c_register("/sys/class/gpio/fanLedAmber/value", 1)
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oldfan = 0x0
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# Front Panel PSU Panel LED setting in register 0x09
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if (self.chassis.get_psu(0).get_status() == self.chassis.get_psu(1).get_status() == True):
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if oldpsu != 0x1:
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if (os.path.isfile("/sys/class/gpio/psuLedAmber/value")):
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self._set_i2c_register("/sys/class/gpio/psuLedAmber/value", 0)
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self._set_i2c_register("/sys/class/gpio/psuLedGreen/value", 1)
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oldpsu = 0x1
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else:
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if oldpsu != 0x0:
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if (os.path.isfile("/sys/class/gpio/psuLedGreen/value")):
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self._set_i2c_register("/sys/class/gpio/psuLedGreen/value", 0)
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self._set_i2c_register("/sys/class/gpio/psuLedAmber/value", 1)
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oldpsu = 0x0
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time.sleep(6)
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# Helper method to map SONiC port name to index
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def _port_name_to_index(self, port_name):
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# Strip "Ethernet" off port name
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if not port_name.startswith(self.SONIC_PORT_NAME_PREFIX):
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return -1
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port_idx = int(port_name[len(self.SONIC_PORT_NAME_PREFIX):])
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return port_idx
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def _port_state_to_mode(self, port_idx, state):
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DBG_PRINT("_port_state_to_mode")
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def _port_led_mode_update(self, port_idx, ledMode):
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DBG_PRINT("_port_led_mode_update")
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# called when port states change- implementation of port_link_state_change() method if needed
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def port_link_state_change(self, portname, state):
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# DBG_PRINT("port_link_state_change ")
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return
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