[device]: Fix a bug that psuutil cannot access gpio sysfs to get PSU status (#1789)

This commit is contained in:
Wirut Getbamrung 2018-06-22 00:57:32 +07:00 committed by Joe LeVeque
parent b745c0bf1b
commit aaac497370

View File

@ -3,7 +3,8 @@
# Platform-specific PSU status interface for SONiC
#
import os.path
import os
try:
from sonic_psu.psu_base import PsuBase
@ -18,42 +19,32 @@ class PsuUtil(PsuBase):
PsuBase.__init__(self)
# DX010 PSU pin mapping
self.psu = [
{'base':216}, # Reserved
{'base': self.get_gpio_base()},
{'abs':27, 'power':22},
{'abs':28, 'power':25}
]
def init_psu_gpio(self, pinnum):
# export pin, input as default
gpio_base = self.psu[0]['base']
export_file = "/sys/class/gpio/export"
direction_file = '/sys/class/gpio/gpio' + str(gpio_base+pinnum) + '/direction'
try:
with open(export_file, 'w') as fd:
fd.write(str(gpio_base+pinnum))
except Exception as error:
logging.error("Unable to export gpio ", pinnum)
def get_gpio_base(self):
sys_gpio_dir = "/sys/class/gpio"
for r in os.listdir(sys_gpio_dir):
if "gpiochip" in r:
return int(r[8:],10)
return 216 #Reserve
# Get a psu status and presence
def read_psu_statuses(self, pinnum):
sys_gpio_dir = "/sys/class/gpio"
retval = 'ERR'
gpio_base = self.psu[0]['base']
gpio_dir = sys_gpio_dir + '/gpio' + str(gpio_base+pinnum)
gpio_file = gpio_dir + "/value"
# init gpio
if (not os.path.isdir(gpio_dir)):
self.init_psu_gpio(pinnum)
try:
with open(gpio_file, 'r') as fd:
retval = fd.read()
except Exception as error:
logging.error("Unable to open ", gpio_file, "file !")
except IOError:
raise IOError("Unable to open " + gpio_file + "file !")
retval = retval.rstrip('\r\n')
return retval
@ -76,11 +67,10 @@ class PsuUtil(PsuBase):
"""
status = 0
psu_status = self.read_psu_statuses(self.psu[index]['power'])
if (psu_status != 'ERR'):
psu_status = int(psu_status, 10)
# Check for PSU status
if (psu_status == 1):
status = 1
psu_status = int(psu_status, 10)
# Check for PSU status
if (psu_status == 1):
status = 1
return status
@ -93,10 +83,9 @@ class PsuUtil(PsuBase):
"""
status = 0
psu_absence = self.read_psu_statuses(self.psu[index]['abs'])
if (psu_absence != 'ERR'):
psu_absence = (int(psu_absence, 10))
# Check for PSU presence
if (psu_absence == 0):
status = 1
psu_absence = (int(psu_absence, 10))
# Check for PSU presence
if (psu_absence == 0):
status = 1
return status