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from . import base
from .decorators import *
import tuned.logs
from tuned.utils.commands import commands
import os
import errno
import re
log = tuned.logs.get()
class VideoPlugin(base.Plugin):
"""
`video`::
Sets various power saving features on video cards.
Radeon cards are supported.
The powersave level can be specified
by using the [option]`radeon_powersave` option. Supported values are:
+
--
* `default`
* `auto`
* `low`
* `mid`
* `high`
* `dynpm`
* `dpm-battery`
* `dpm-balanced`
* `dpm-perfomance`
--
+
For additional detail, see
link:https://www.x.org/wiki/RadeonFeature/#kmspowermanagementoptions[KMS Power Management Options].
+
NOTE: This plug-in is experimental and the option might change in future releases.
+
.To set the powersave level for the Radeon video card to high
====
----
[video]
radeon_powersave=high
----
====
Mobile hardware with amdgpu driven eDP panels can be configured
with the [option]`panel_power_savings` option.
This accepts a value range from 0 to 4, where 4 is the highest power savings
but will trade off color accuracy.
"""
def __init__(self, *args, **kwargs):
super(VideoPlugin, self).__init__(*args, **kwargs)
def _init_devices(self):
self._devices_supported = True
self._free_devices = set()
self._assigned_devices = set()
# Add any radeon and amdgpu hardware with /any/ supported attributes present
for device in self._hardware_inventory.get_devices("drm").match_sys_name("card*-*"):
attrs = self._files(device.sys_name)
for attr in attrs:
if os.path.exists(attrs[attr]):
self._free_devices.add(device.sys_name)
self._cmd = commands()
def _get_device_objects(self, devices):
return [self._hardware_inventory.get_device("drm", x) for x in devices]
@classmethod
def _get_config_options(self):
return {
"radeon_powersave" : None,
"panel_power_savings": None,
}
def _instance_init(self, instance):
instance._has_dynamic_tuning = False
instance._has_static_tuning = True
def _instance_cleanup(self, instance):
pass
def _files(self, device):
return {
"method" : "/sys/class/drm/%s/device/power_method" % device,
"profile": "/sys/class/drm/%s/device/power_profile" % device,
"dpm_state": "/sys/class/drm/%s/device/power_dpm_state" % device,
"panel_power_savings": "/sys/class/drm/%s/amdgpu/panel_power_savings" % device,
}
def apply_panel_power_saving_target(self, device, target, sim=False):
"""Apply the target value to the panel_power_savings file if it doesn't already have it"""
# if we don't have the file, we might be radeon not amdgpu
if not os.path.exists(self._files(device)["panel_power_savings"]):
return None
# make sure the value is different (avoids unnecessary kernel modeset)
current = int(self._get_panel_power_savings(device))
if current == target:
log.info(
"panel_power_savings for %s already %s" % (device, target)
)
return target
# flush it out
log.info("%s panel_power_savings -> %s" % (device, target))
if sim or self._cmd.write_to_file(self._files(device)["panel_power_savings"], target):
return target
return None
@command_set("radeon_powersave", per_device=True)
def _set_radeon_powersave(self, value, device, sim, remove):
sys_files = self._files(device)
va = str(re.sub(r"(\s*:\s*)|(\s+)|(\s*;\s*)|(\s*,\s*)", " ", value)).split()
if not os.path.exists(sys_files["method"]):
if not sim:
log.debug("radeon_powersave is not supported on '%s'" % device)
return None
for v in va:
if v in ["default", "auto", "low", "mid", "high"]:
if not sim:
if (self._cmd.write_to_file(sys_files["method"], "profile", \
no_error = [errno.ENOENT] if remove else False) and
self._cmd.write_to_file(sys_files["profile"], v, \
no_error = [errno.ENOENT] if remove else False)):
return v
elif v == "dynpm":
if not sim:
if (self._cmd.write_to_file(sys_files["method"], "dynpm", \
no_error = [errno.ENOENT] if remove else False)):
return "dynpm"
# new DPM profiles, recommended to use if supported
elif v in ["dpm-battery", "dpm-balanced", "dpm-performance"]:
if not sim:
state = v[len("dpm-"):]
if (self._cmd.write_to_file(sys_files["method"], "dpm", \
no_error = [errno.ENOENT] if remove else False) and
self._cmd.write_to_file(sys_files["dpm_state"], state, \
no_error = [errno.ENOENT] if remove else False)):
return v
else:
if not sim:
log.warning("Invalid option for radeon_powersave.")
return None
return None
@command_get("radeon_powersave")
def _get_radeon_powersave(self, device, ignore_missing = False):
sys_files = self._files(device)
if not os.path.exists(sys_files["method"]):
log.debug("radeon_powersave is not supported on '%s'" % device)
return None
method = self._cmd.read_file(sys_files["method"], no_error=ignore_missing).strip()
if method == "profile":
return self._cmd.read_file(sys_files["profile"]).strip()
elif method == "dynpm":
return method
elif method == "dpm":
return "dpm-" + self._cmd.read_file(sys_files["dpm_state"]).strip()
else:
return None
@command_set("panel_power_savings", per_device=True)
def _set_panel_power_savings(self, value, device, sim, remove):
"""Set the panel_power_savings value"""
try:
value = int(value, 10)
except ValueError:
log.warning("Invalid value %s for panel_power_savings" % value)
return None
if value in range(0, 5):
return self.apply_panel_power_saving_target(device, value, sim)
else:
log.warning("Invalid value %s for panel_power_savings" % value)
return None
@command_get("panel_power_savings")
def _get_panel_power_savings(self, device, ignore_missing=False):
"""Get the current panel_power_savings value"""
if not os.path.exists(self._files(device)["panel_power_savings"]):
log.debug("panel_power_savings is not supported on '%s'" % device)
return None
fname = self._files(device)["panel_power_savings"]
return self._cmd.read_file(fname, no_error=ignore_missing).strip()