58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
from . import base
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from .decorators import *
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import tuned.logs
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from tuned.utils.commands import commands
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import glob
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log = tuned.logs.get()
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class USBPlugin(base.Plugin):
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"""
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Plugin for tuning various options of USB subsystem.
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"""
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def _init_devices(self):
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self._devices_supported = True
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self._free_devices = set()
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self._assigned_devices = set()
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for device in self._hardware_inventory.get_devices("usb").match_property("DEVTYPE", "usb_device"):
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self._free_devices.add(device.sys_name)
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self._cmd = commands()
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def _get_device_objects(self, devices):
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return [self._hardware_inventory.get_device("usb", x) for x in devices]
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@classmethod
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def _get_config_options(self):
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return {
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"autosuspend" : None,
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}
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def _instance_init(self, instance):
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instance._has_static_tuning = True
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instance._has_dynamic_tuning = False
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def _instance_cleanup(self, instance):
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pass
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def _autosuspend_sysfile(self, device):
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return "/sys/bus/usb/devices/%s/power/autosuspend" % device
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@command_set("autosuspend", per_device=True)
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def _set_autosuspend(self, value, device, sim):
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enable = self._option_bool(value)
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if enable is None:
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return None
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val = "1" if enable else "0"
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if not sim:
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sys_file = self._autosuspend_sysfile(device)
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self._cmd.write_to_file(sys_file, val)
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return val
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@command_get("autosuspend")
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def _get_autosuspend(self, device, ignore_missing=False):
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sys_file = self._autosuspend_sysfile(device)
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return self._cmd.read_file(sys_file, no_error=ignore_missing).strip()
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