ac2be9d99a
* remove nephos sonic-platform-modules-ingrasys module * [Ingrasys]Add platform drivers and device to support Debian Stretch * fix gpio init issue
108 lines
3.0 KiB
Python
108 lines
3.0 KiB
Python
#
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# psuutil.py
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# Platform-specific PSU status interface for SONiC
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#
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import os.path
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try:
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from sonic_psu.psu_base import PsuBase
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except ImportError as e:
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raise ImportError(str(e) + "- required module not found")
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class PsuUtil(PsuBase):
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"""Platform-specific PSUutil class"""
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GPIO_OFFSET = 0
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SYS_GPIO_DIR = "/sys/class/gpio/"
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def set_gpio_offset(self):
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sys_gpio_dir = "/sys/class/gpio"
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self.GPIO_OFFSET = 0
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gpiochip_no = 0
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for d in os.listdir(sys_gpio_dir):
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if "gpiochip" in d:
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try:
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gpiochip_no = int(d[8:],10)
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except ValueError as e:
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print "Error: %s" % str(e)
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if gpiochip_no > 255:
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self.GPIO_OFFSET=256
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return True
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return True
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def __init__(self):
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self.set_gpio_offset()
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PsuBase.__init__(self)
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# Get sysfs attribute
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def get_attr_value(self, attr_path):
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retval = 'ERR'
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if (not os.path.isfile(attr_path)):
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return retval
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try:
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with open(attr_path, 'r') as fd:
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retval = fd.read()
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except Exception as error:
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logging.error("Unable to open ", attr_path, " file !")
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retval = retval.rstrip('\r\n')
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return retval
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def get_num_psus(self):
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"""
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Retrieves the number of PSUs available on the device
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:return: An integer, the number of PSUs available on the device
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"""
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MAX_PSUS = 2
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return MAX_PSUS
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def get_psu_status(self, index):
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"""
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Retrieves the oprational status of power supply unit (PSU) defined
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by index <index>
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:param index: An integer, index of the PSU of which to query status
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:return: Boolean, True if PSU is operating properly, False if PSU is\
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faulty
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"""
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status = 0
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gpio_path = [ 'gpio'+str(99+self.GPIO_OFFSET)+'/value', 'gpio'+str(96+self.GPIO_OFFSET)+'/value' ]
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attr_path = self.SYS_GPIO_DIR + gpio_path[index-1]
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attr_value = self.get_attr_value(attr_path)
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if (attr_value != 'ERR'):
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attr_value = int(attr_value, 10)
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# Check for PSU status
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if (attr_value == 1):
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status = 1
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return status
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def get_psu_presence(self, index):
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"""
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Retrieves the presence status of power supply unit (PSU) defined
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by index <index>
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:param index: An integer, index of the PSU of which to query status
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:return: Boolean, True if PSU is plugged, False if not
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"""
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status = 0
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gpio_path = [ 'gpio'+str(100+self.GPIO_OFFSET)+'/value', 'gpio'+str(97+self.GPIO_OFFSET)+'/value' ]
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attr_path = self.SYS_GPIO_DIR + gpio_path[index-1]
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attr_value = self.get_attr_value(attr_path)
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if (attr_value != 'ERR'):
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attr_value = int(attr_value, 10)
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# Check for PSU status
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if (attr_value == 1):
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status = 1
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return status
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